Organic Patents (Class 385/145)
  • Patent number: 10221503
    Abstract: Disclosed are methods of fiber spinning and polymer fibers that utilize multifunctional thiol and enes compounds. Also, the subject matter disclosed herein relates to uses of polymer fibers and articles prepared from such fibers.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: March 5, 2019
    Assignee: Board of Regents of the University of Texas System
    Inventors: Christopher Ellison, Kadhiravan Shanmuganathan
  • Patent number: 10023827
    Abstract: A cleaning composition for a semiconductor substrate contains a solvent, and a polymer that includes a fluorine atom, a silicon atom or a combination thereof. The content of water in the solvent is preferably no greater than 20% by mass. The cleaning composition preferably further contains an organic acid which is a non-polymeric acid. The organic acid is preferably a polyhydric carboxylic acid. The acid dissociation constant of the polymer is preferably less than that of the organic acid. The solubility of the organic acid in water at 25° C. is preferably no less than 5% by mass. The organic acid is preferably a solid at 25° C.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: July 17, 2018
    Assignee: JSR CORPORATION
    Inventors: Kenji Mochida, Motoyuki Shima
  • Patent number: 9878326
    Abstract: The direct integration of light and optical control into microfluidic systems presents a significant hurdle to the development of portable optical trapping-based devices. A simple, inexpensive fiber-based approach is provided that allows for easy implementation of diode-bars for optical particle separations within flowing microfluidic systems. Models have also been developed that demonstrate the advantages of manipulating particles within flow using linear geometries as opposed to individually focused point traps as traditionally employed in optical-trapping micromanipulation.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: January 30, 2018
    Assignee: Colorado School of Mines
    Inventors: Jeff Squier, David W. M. Marr, Robert Applegate, Tor Vestad
  • Patent number: 9822035
    Abstract: A technique is described for fabricating one or more optical devices in a carbon-coated optical fiber. A photosensitive optical fiber is provided having a hermetic carbon coating. Further provided is a laser having a beam output that is configured to inscribe one or more refractive index modulations into the optical fiber through the hermetic carbon layer while leaving the hermetic carbon layer intact. The laser is used to inscribe one or more optical devices into the optical fiber through the hermetic carbon layer.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: November 21, 2017
    Assignee: OFS FITEL, LLC
    Inventors: Adam Hokansson, David J Kudelko, Yaowen Li, Joanna Y Ng, Debra A Simoff
  • Patent number: 9798043
    Abstract: Provided is an optical fiber which has exceptional heat resistance and is highly safe. This optical fiber has a core, and a sheath of a least one layer around the outside circumference of the core, the sheath including a polymer that contains a repeating unit (A) derived from a fluoroalkyl (meth)acrylate having a specific structure.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: October 24, 2017
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hideki Kihara, Akinori Ishikado, Yoshihiro Tsukamoto
  • Patent number: 9684222
    Abstract: Disclosed is a technology related to an optical waveguide which is insensitive to an ambient temperature and is capable of adjusting a wavelength error due to a manufacturing processing deviation. The optical waveguide includes: a clad layer positioned on a substrate; a core layer positioned between the substrate and the clad layer, and including patterns positioned in a first region and a second region; and a wavelength adjusting unit positioned in the first region between the substrate and the clad layer, and configured to adjust a wavelength of an optical signal propagated through patterns passing through the first region based on received electric energy, in which the clad layer includes a material having a Thermo-Optic Coefficient (TOC) with an opposite sign to that of a material included in the core layer.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: June 20, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jong Moo Lee, Min Su Kim
  • Patent number: 9605143
    Abstract: The present invention relates to: a resin composition for forming an optical waveguide, containing (A) a polymer having a hydroxyl group and/or a carboxyl group, (B) a (meth)acrylate having a urethane bond, (C) a polyfunctional blocked isocyanate compound, and (D) a radical polymerization initiator; a resin film for forming an optical waveguide, containing the resin composition for forming an optical waveguide; and an optical waveguide containing a lower cladding layer, a core part and an upper cladding layer, at least one of which contains the resin composition for forming an optical waveguide or the resin film for forming an optical waveguide.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: March 28, 2017
    Assignee: HITACHI CHEMICALS COMPANY, LTD.
    Inventors: Masatoshi Yamaguchi, Tatsuya Makino, Masami Ochiai
  • Patent number: 9557477
    Abstract: A coated glass fiber 1 comprising a glass fiber 10 and one or more coating layers each composed of an ultraviolet curable resin on the outer circumference of the glass fiber 10, wherein the ultraviolet curable resin constituting at least one of the coating layers is formed of an ultraviolet curable coating material containing a silane coupling agent and a photoacid generator. The coated optical fiber 1 coated optical fiber having a high dynamic fatigue coefficient since adhesion between the surface of the glass fiber and the resin coating layer is satisfactory.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: January 31, 2017
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kumiko Tachibana, Takashi Fujii, Takashi Takada, Noriaki Iwaguchi
  • Patent number: 9458353
    Abstract: A film layer comprising a high-chi (?) block copolymer for self-assembly and a surface active polymer (SAP) was prepared on a substrate surface that was neutral wetting to the domains of the self-assembled block copolymer. The block copolymer comprises at least one polycarbonate block and at least one other block (e.g., a styrene-based block). The SAP comprises a hydrophobic fluorinated first repeat unit and a non-fluorinated second repeat unit bearing at least one pendent OH group present as an alcohol or acid (e.g., carboxylic acid). The film layer, whose top surface has contact with an atmosphere, self-assembles to form a lamellar or cylindrical domain pattern having perpendicular orientation with respect to the underlying surface. Other morphologies (e.g., islands and holes of height 1.0Lo) were obtained with films lacking the SAP. The SAP is preferentially miscible with, and lowers the surface energy of, the domain comprising the polycarbonate block.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: October 4, 2016
    Assignee: International Business Machines Corporation
    Inventors: Joy Cheng, Anindarupa Chunder, Daniel P. Sanders, Melia Tjio, Ankit Vora
  • Patent number: 9353001
    Abstract: A technique is described for fabricating one or more optical devices in a carbon-coated optical fiber. A photosensitive optical fiber is provided having a hermetic carbon coating. Further provided is a laser having a beam output that is configured to inscribe one or more refractive index modulations into the optical fiber through the hermetic carbon layer while leaving the hermetic carbon layer intact. The laser is used to inscribe one or more optical devices into the optical fiber through the hermetic carbon layer.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: May 31, 2016
    Assignee: OFS FITEL, LLC
    Inventors: Adam Hokansson, David J Kudelko, Yaowen Li, Joanna Y Ng, Debra A Simoff
  • Patent number: 8995802
    Abstract: An IR supercontinuum source for generating supercontinuum in the MIR or possibly LWIR spectral bands comprises a supercontinuum fiber formed from a heavy metal oxide host glass having low optical loss and high non-linearity over the spectral band that is stable, strong and chemically durable. The supercontinuum fiber is suitably a depressed inner clad fiber configured to support only single transverse spatial mode propagation of the pump signal and supercontinuum. The source suitably includes a tapered depressed inner clad fiber to couple the pump signal into the supercontinuum fiber. The source may be configured as an “all-fiber” source.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: March 31, 2015
    Assignee: NP Photonics, Inc.
    Inventors: Arturo Chavez-Pirson, Daniel Larry Rhonehouse, Dan T. Nguyen
  • Patent number: 8953925
    Abstract: The present invention relates to an optical waveguide containing: a core formed by curing (A) a fluorine-containing polyarylene prepolymer having a crosslinkable functional group; and a cladding formed by curing (I) a curable composition containing (B) a compound having a molecular weight of 140 to 5,000, having a crosslinkable functional group and having no fluorine atom, and (A) a fluorine-containing polyarylene prepolymer.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: February 10, 2015
    Assignee: Asahi Glass Company, Limited
    Inventors: Shotaro Takenobu, Takeshi Eriguchi, Shunsuke Yokotsuka
  • Publication number: 20140341524
    Abstract: A coating composition including a reinforcing agent. The coating composition may include one or more radiation-curable monofunctional monomers, one or more radiation-curable multifunctional monomers or oligomers, a photoinitiator, and a reinforcing agent. The monofunctional monomers, multifunctional monomers, and multifunctional oligomers may include acrylate groups. The reinforcing agent may be an acrylic co-polymer that includes two or more repeat units. At least one of the repeat units includes chemical groups that enable self-association of the acrylic co-polymer. Self-association of the acrylic co-polymer may improve the tensile strength of coatings formed from the coating compositions.
    Type: Application
    Filed: April 9, 2014
    Publication date: November 20, 2014
    Applicant: Corning Incorporated
    Inventors: Dana Craig Bookbinder, Michelle Dawn Fabian, Kevin Robert McCarthy, Weijun Niu, David Neal Schissel, Michael James Winningham
  • Patent number: 8867885
    Abstract: An optical waveguide forming epoxy resin composition is free from a diluent component irrelevant to a curing reaction, and comprises: (A) a liquid epoxy resin; and (B) a photoacid generator; wherein the liquid epoxy resin (A) comprises a liquid epoxy resin represented by the following general formula (1) in a proportion of 40 to 75 wt % based on the overall amount of a resin component: wherein R1 and R2 are each a hydrogen atom or a methyl group; R3 to R6 are each a hydrogen atom, a methyl group, a chlorine atom or a bromine atom; X is a C2 to C15 alkylene group, an ethyleneoxy group, a di(ethyleneoxy) group, a tri(ethyleneoxy) group, a propyleneoxy group, a propyleneoxypropyl group, a di(propyleneoxy)propyl group or a tri(propyleneoxy)propyl group; and n is a natural number and has an average value of 1.2 to 5.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: October 21, 2014
    Assignee: Nitto Denko Corporation
    Inventor: Tomoyuki Hirayama
  • Patent number: 8861921
    Abstract: The present invention provides an organic fibrous photovoltaic device with a frequency conversion region comprising a waveguide being arranged normal to the axis of the fiber.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: October 14, 2014
    Assignee: Wake Forest University
    Inventor: David Loren Carroll
  • Patent number: 8805133
    Abstract: A tellurium oxide glass that is stable, strong and chemically durable exhibits low optical loss from the UV band well into the MIR band. Unwanted absorption mechanisms in the MIR band are removed or reduced so that the glass formulation exhibits optical performance as close as possible to the theoretical limit of a tellurium oxide glass. The glass formulation only includes glass constituents that provide the intermediate, modifiers and any halides (for OH— reduction) whose inherent absorption wavelength is longer than that of Tellurium (IV) oxide. The glass formulation is substantially free of Sodium Oxide and any other passive glass constituent including hydroxyl whose inherent absorption wavelength is shorter than that of Tellurium (IV) oxide. The glass formulation preferably includes only a small residual amount of halide.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: August 12, 2014
    Assignee: NP Photonics, Inc.
    Inventors: Daniel Larry Rhonehouse, Arturo Chavez-Pirson
  • Patent number: 8722842
    Abstract: The present invention provides an optical film exhibiting wavelength dispersion such that a retardation value is smaller on the shorter wavelength side, and capable of being also formed comparatively thinly. The optical film of the present invention is an optical film including a polyimide-based polymer represented by the following general formula (I). In the formula (I), m is 40% by mol or more and 100% by mol or less. R1 and R2 each independently denote a substituent having a carbon-carbon double bond or a triple bond. A, A?, B, B?, E, G, and H each denote a substituent, and small letters corresponding to these alphabets denote substitution number thereof. X and Y each independently denote bond part such as a covalent bond. The substituents having a carbon-carbon double bond or a triple bond represented by R1 and R2 are a substituted or unsubstituted aryl group, a substituted or unsubstituted vinyl group, and a substituted or unsubstituted ethynyl group.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: May 13, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Toshiyuki Iida, Yutaka Ohmori, Miyuki Kurogi
  • Patent number: 8676023
    Abstract: The present invention discloses a method for fabricating polymeric wavelength filter based on an asymmetric Bragg coupler with single-grating waveguide. The asymmetric waveguide coupler is formed firstly on a negative photo-resist mold. PDMS film is injected into the narrow waveguide of the coupler to act as a protection layer. The gratings pattern is exposed on the alternative waveguide and subsequently transferred to PDMS stamp mold. The PDMS stamp mold is used as a stamp to transfer the gratings pattern of the ABC wavelength filter onto UV cured polymer to form the final ABC filter. Whereby, the fabrication process is reliable and accurate, and can offer great potential for mass production of the ABC filter with single-grating waveguide.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: March 18, 2014
    Assignee: National Formosa University
    Inventor: Wei-Ching Chuang
  • Patent number: 8600210
    Abstract: A GI type optical fiber of the present invention is a GI type optical fiber having a core component and a cladding component disposed around the outer periphery of the core component, the core component includes a polymer containing at least 55 wt % chlorostyrene monomer and a dopant, and the cladding component includes a polymer of a monomer containing at least 35 wt % methyl methacrylate. It is an object of the present invention to provide a GI type optical fiber in which chlorostyrene is used as the predominant component of the monomer that constitutes the core component, and therefore has excellent transparency and good flexibility, and allows high-speed communication.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: December 3, 2013
    Assignees: Sekisui Chemical Co., Ltd., Keio University
    Inventors: Hirotsugu Yoshida, Tazuru Okamoto, Ryosuke Nakao, Hiroka Inabe, Yuki Masabe, Yasuhiro Koike
  • Patent number: 8538230
    Abstract: The present invention provides a resin composition and film for forming a cladding layer of an optical waveguide, which composition contains (A) a (meth)acrylic polymer having a weight average molecular weight more than 100,000, (B) a urethane (meth)acrylate, and (D) a radical polymerization initiator; and an optical waveguide and an optical module produced by use of the composition or film. There can be provided a resin composition for forming a cladding layer and a resin film for forming a cladding layer, which exhibit excellent bending durability and twisting durability, and an optical waveguide and an optical module each produced therefrom.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: September 17, 2013
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Masami Ochiai, Tatsuya Makino, Toshihiko Takasaki, Atsushi Takahashi
  • Patent number: 8530118
    Abstract: Methods of fabricating optical elements that are encapsulated in monolithic matrices. The present invention is based, at least in one aspect, upon the concept of using multiphoton, multi-step photocuring to fabricate encapsulated optical element(s) within a body of a photopolymerizable composition. Imagewise, multiphoton polymerization techniques are used to form the optical element. The body surrounding the optical element is also photohardened by blanket irradiation and/or thermal curing to help form an encapsulating structure. In addition, the composition also incorporates one or more other, non-diffusing binder components that may be thermosetting or thermoplastic. The end result is an encapsulated structure with good hardness, durability, dimensional stability, resilience, and toughness.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: September 10, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Robert J. DeVoe, Catherine A. Leatherdale, Jeffrey M. Florczak, Patrick R. Fleming, John E. Potts
  • Patent number: 8532442
    Abstract: An optical waveguide of excellent flex resistance which is to be formed on the surface of a flexible printed circuit is obtained by using an epoxy resin composition includes (A) a liquid epoxy compound, (B) a solid epoxy compound, and (C) a cationic curing initiator, wherein as the liquid epoxy compound (A), (A1) a liquid epoxy compound represented by general formula (I) below is included: (where R1 and R2 are each independently a hydrogen atom or a methyl group; R3 to R6 are each independently a hydrogen atom, a methyl group, a chlorine atom or a bromine atom; R7 is an alkyleneoxy group or alkylene group of 1 to 15 carbons; p is 0 or 1; q is 1 to 25; r and s are 0 when p is 0, and are 1 when p is 1; and n is a positive integer which averages from 1 to 5).
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: September 10, 2013
    Assignee: Panasonic Corporation
    Inventors: Naoyuki Kondou, Junko Yashiro, Shinji Hashimoto, Tohru Nakashiba
  • Patent number: 8503853
    Abstract: A plastic optical fiber comprising a core and a cladding, wherein the cladding comprises at least one layer, and the cladding comprises a copolymer which comprises 10 to 35% by weight of ethylene, 45 to 69% by weight of tetrafluoroethylene, 20 to 45% by weight of hexafluoropropylene, and 0.01 to 10% by weight of a fluorovinyl compound represented by Formula (1): CH2?CX1(CF2)nX2 (wherein X1 represents a fluorine atom or a hydrogen atom, X2 represents a fluorine atom, a hydrogen atom, or a hydrocarbon group, and n represents an integer from 1 to 10) as a copolymer component.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: August 6, 2013
    Assignee: Toray Industries, Inc.
    Inventors: Hironobu Maeda, Keiichi Maeshima, Shinji Sato, Yoshiyuki Kiriyama, Hidekazu Kunieda
  • Patent number: 8483532
    Abstract: A plastic-cladding optical fiber is provided. The plastic-cladding optical fiber is provided includes: a core layer made of quartz glass; and a cladding layer formed by hardening a curable resin composition over a periphery of the core layer. Adhesion between the core layer and the cladding layer ranges 1.5 g/mm to 4.0 g/mm.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: July 9, 2013
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kazuyuki Sohma, Takashi Takada, Itaru Sakabe
  • Patent number: 8475920
    Abstract: Cable including at least one core comprising at least one transmissive element and at least one coating layer made of a coating material, wherein said coating material comprises: —at least one polyethylene; —at least one non-ionic surfactant having the following general formula (I): wherein: —Q is a p-functional group; —R is a linear or branched C1-C4 alkyl group, preferably a methyl group; —R1 is a hydrogen atom or a linear or branched C1-C6 alkyl group, preferably a hydrogen atom; —n is an integer from 2 to 5 inclusive, preferably 2; —x is an integer from 5 to 500 inclusive, preferably from 10 to 300 inclusive; —y is an integer from 0 to 500 inclusive, preferably from 10 to 300 inclusive; —z is an integer from 0 to 500 inclusive, preferably from 10 to 300 inclusive; —y+z is not lower than 2; —p is an integer from 1 to 4 inclusive, preferably 1 or 4; provided that, when the transmissive element is an electrical energy transmissive element, said at least one coating layer is an external sheathing layer.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: July 2, 2013
    Assignee: Prysmian Cavi E Sistemi Energia SRL
    Inventors: Andrea Pelizzoni, Luca Castellani, Franco Peruzzotti, Cristiano Puppi
  • Patent number: 8463099
    Abstract: The present invention relates to a resin composition for an optical material comprising (A) a carboxylic acid-modified phenoxy resin, (B) a polymerizable compound and (C) a polymerization initiator, a resin film for an optical material comprising the above resin composition and an optical waveguide having a core part and/or a cladding layer formed by using the same. Provided are a resin composition for an optical material which is excellent in a heat resistance and a transparency and which is soluble in an alkaline aqueous solution, a resin film for an optical material comprising the above resin composition and an optical waveguide produced by using the same.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: June 11, 2013
    Assignee: Hitachi Chemical Company
    Inventors: Tatsuya Makino, Atsushi Takahashi, Masatoshi Yamaguchi, Toshihiko Takasaki, Tomoaki Shibata, Masami Ochiai
  • Patent number: 8437598
    Abstract: A resin composition is provided, which satisfies both an uncured layer flexibility requirement and a patterning resolution requirement for production of an optical waveguide by a roll-to-roll process. An optical waveguide produced by using the resin composition is also provided. The resin composition comprises: (A) an aromatic multifunctional epoxy polymer having a weight average molecular weight (Mw) of 500 to 5000; (B) an aromatic multifunctional epoxy polymer having a weight average molecular weight (Mw) of 10000 to 50000; (C) at least one of monofunctional, difunctional and trifunctional liquid aromatic epoxy monomers; and (D) a photoacid generator; wherein the components (A), (B) and (C) are present in proportions of 80 to 90 parts by weight, 5 to 15 parts by weight, and 1 to 10 parts by weight, respectively, based on a total of 100 parts by weight of the components (A), (B) and (C).
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: May 7, 2013
    Assignee: Nitto Denko Corporation
    Inventor: Tomoyuki Hirayama
  • Patent number: 8426020
    Abstract: The invention provides an optical fiber coated with a Supercoating, wherein the Supercoating comprises at least two layers, wherein the first layer is a Primary Coating that is in contact with the outer surface of the optical fiber and the second layer is a Secondary Coating in contact with the outer surface of the Primary Coating, wherein the cured Primary Coating on the optical fiber has the following properties after initial cure and after one month aging at 85° C. and 85% relative humidity: A) a % RAU of from about 84% to about 99%; B) an in-situ modulus of between about 0.15 MPa and about 0.60 MPa; and C) a Tube Tg, of from about ?25° C. to about ?55° C.; wherein the cured Secondary Coating on the optical fiber has the following properties after initial cure and after one month aging at 85° C. and 85% relative humidity: A) a % RAU of from about 80% to about 98%; B) an in-situ modulus of between about 0.60 GPa and about 1.90 GPa; and C) a Tube Tg, of from about 50° C. to about 80° C.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: April 23, 2013
    Assignee: DSM IP Assets B.V.
    Inventors: Steven R. Schmid, Petrus Jacobus Hubertus Niels, Paulus Antonius Maria Steeman, Xiaosong Wu, Wendell Wayne Cattron, Tyson Dean Norlin, Edward J. Murphy, John M. Zimmerman, Anthony Joseph Tortorello
  • Patent number: 8406591
    Abstract: A low cost, high performance, low profile flexible reinforcement member that can be used for both optical and copper communications cable. The reinforcement members made according to the preferred process are more rigid than known reinforcement members, but are less rigid than glass pultruded rods. Communications cables utilizing these members are lightweight and exhibit an improved combination of strength and flexibility compared to traditional communications cables. Further, these communication cables may then be installed into underground ducts using more economical and faster installation techniques.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: March 26, 2013
    Assignee: Neptco JV, LLC
    Inventors: Thomas P. Hager, Richard N. Lehman, James R. Priest
  • Patent number: 8383695
    Abstract: The present invention relates to a phenoxy resin for an optical material obtained by subjecting at least one selected from specific difunctional epoxy resins and at least one selected from specific difunctional phenols to polyaddition reaction, wherein a film comprising the above phenoxy resin has a refractive index of 1.580 or less at 25° C. and a wavelength of 830 nm, a resin composition for an optical material containing the above phenoxy resin, a resin film for an optical material comprising the above resin composition and an optical waveguide produced by using the above resin composition and/or the above resin film.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: February 26, 2013
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Tatsuya Makino, Atsushi Takahashi, Toshihiko Takasaki, Tomoaki Shibata, Masami Ochiai
  • Patent number: 8367204
    Abstract: A curable resin composition comprising an antioxidant, a UV absorber, and a (meth)acrylate oligomer comprising polyether units. Cured products made from the liquid curable resin composition of the present invention have excellent light stability. The resin composition is suitable as a coating material for optical fibers.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: February 5, 2013
    Assignees: DSM IP Assets B.V., JSR Corporation
    Inventors: Hirofumi Uchida, Zen Komiya, Takashi Ukachi
  • Patent number: 8343619
    Abstract: An optical waveguide film is provided having a cross-sectional structure wherein claddings composed of a thermoplastic resin B and dispersions (cores) composed of a thermoplastic resin A extend in the machine direction of the film and are arrayed in the transverse direction of the film, the optical waveguide film comprising not less than 3 cores, diameters (We1, We2) of cores located at the both ends in the transverse direction of the film and diameter (Wc) of a core in the central portion in the transverse direction of the film satisfying the following Formulae (1) and (2), the optical waveguide film comprising a continuous cladding layer at at least one side thereof, the thicknesses of the cladding layers (Te1, Te2) at the both ends thereof in the transverse direction of the film and the thickness (Tc) of the cladding layer in the central portion in the transverse direction of the film satisfying the following Formulae (3) and (4): 0.8?We1/Wc?1.2??Formula (1) 0.8?We2/Wc?1.2??Formula (2) 0.8?Te1/Tc?1.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: January 1, 2013
    Assignee: Toray Industries, Inc.
    Inventors: Wataru Gouda, Shunichi Osada, Masatoshi Oyama
  • Patent number: 8218937
    Abstract: An optical film of the present invention comprises a polyimide-based polymer represented by the following general formula (V). The optical film of the present invention exhibits an optical property such that wavelength dispersion of retardation scarcely changes ranging from the short wavelength side to the long wavelength side. Typically, the optical film of the present invention may be used as a retardation film of a liquid crystal display device.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: July 10, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Toshiyuki Iida, Yutaka Ohmori, Miyuki Kurogi
  • Patent number: 8206825
    Abstract: A coated or jacketed wire or cable, and components thereof are disclosed. The coating, jacket, and components, which comprise a polyolefin and a phenolic polymeric antioxidant, exhibit outstanding oxidative thermal stability (as indicated by the increase in the oxidative inductive time (OIT)), when compared to polyolefins containing traditional non-polymeric antioxidants. A greater improvement in the thermal oxidative stability is observed after the polyolefin mixtures have been aged in water-blocking filler(s).
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: June 26, 2012
    Assignee: Equistar Chemicals, LP
    Inventors: Marvin R. Appel, Mick C. Hundley, Jeffrey S. Borke, Steven W. Horwatt
  • Patent number: 8200058
    Abstract: An optical waveguide structure has excellent heat resistance and a low water absorbing property and can be manufactured with a low material cost. Such an optical waveguide structure includes: an optical waveguide having two surfaces, a core layer including core portions and cladding portions each having a refractive index lower than that of each of the core portions, the core layer having two surfaces, and cladding layers provided so as to make contact with the two surfaces of the core layer and having a refractive index lower than that of each of the core portions; and conductor layers provided on the two surfaces of the optical waveguide. In the optical waveguide structure, each of the cladding layers is formed of a norbornene-based polymer as a major component thereof.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: June 12, 2012
    Assignee: Sumitomo Bakelite Company, Ltd.
    Inventors: Koji Choki, Tetsuya Mori, Keizo Takahama, Makoto Fujiwara, Kei Watanabe, Hiroshi Owari
  • Publication number: 20120020637
    Abstract: A plastic optical fiber comprising a core and a cladding, wherein the cladding comprises at least one layer, and the cladding comprises a copolymer which comprises 10 to 35% by weight of ethylene, 45 to 69% by weight of tetrafluoroethylene, 20 to 45% by weight of hexafluoropropylene, and 0.01 to 10% by weight of a fluorovinyl compound represented by Formula (1): CH2?CX1(CF2)nX2 (wherein X1 represents a fluorine atom or a hydrogen atom, X2 represents a fluorine atom, a hydrogen atom, or a hydrocarbon group, and n represents an integer from 1 to 10) as a copolymer component.
    Type: Application
    Filed: March 17, 2010
    Publication date: January 26, 2012
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Hironobu Maeda, Keiichi Maeshima, Shinji Sato, Yoshiyuki Kiriyama, Hidekazu Kunieda
  • Publication number: 20120002932
    Abstract: The present invention relates to an optical waveguide containing: a core formed by curing (A) a fluorine-containing polyarylene prepolymer having a crosslinkable functional group; and a cladding formed by curing (I) a curable composition containing (B) a compound having a molecular weight of 140 to 5,000, having a crosslinkable functional group and having no fluorine atom, and (A) a fluorine-containing polyarylene prepolymer.
    Type: Application
    Filed: September 16, 2011
    Publication date: January 5, 2012
    Applicant: Asahi Glass Company, Limited
    Inventors: Shotaro TAKENOBU, Takeshi Eriguchi, Shunsuke Yokotsuka
  • Patent number: 8040711
    Abstract: Optically-coupled memory systems are disclosed. In one embodiment, a system memory includes a carrier substrate, and a controller attached to the carrier substrate and operable to transmit and receive optical signals, and first and second memory modules. The module substrate of the first memory module has an aperture formed therein, the aperture being operable to provide an optical path for optical signals between the controller and an optical transmitter/receiver unit of the second memory module. Thus, the system memory provides the advantages of “free space” optical connection in a compact arrangement of memory modules. In an alternate embodiment, the first memory module includes a beam splitter attached to the module substrate proximate the aperture. In another embodiment, the first and second memory modules are staged on the carrier substrate to provide an unobstructed path for optical signals.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: October 18, 2011
    Assignee: Round Rock Research, LLC
    Inventors: Terry R. Lee, Kevin J. Ryan
  • Patent number: 7995895
    Abstract: A resin composition for an optical waveguide is provided, which comprises: an epoxy compound represented by the following general formula (1): wherein m is 1 or a positive integer, n is 1 or a positive integer, R and R? which may be the same or different are each represented by the following formula (2) or (3), wherein c is a positive integer of 1 to 3 and each one of c may be the same or different, and X is represented by the following formula (4): wherein a is an integer of 0 to 2, and b is a positive integer of 1 to 3, and satisfy a condition of a+b=3; and a photoacid generator. The resin composition has a lower viscosity, and is excellent in flexibility and moisture absorption resistance. An optical waveguide produced by employing the resin composition is also provided.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: August 9, 2011
    Assignees: Nitto Denko Corporation, Nippon Steel Chemical Co., Ltd.
    Inventors: Takami Hikita, Yusuke Shimizu, Kazuo Ishihara
  • Patent number: 7965916
    Abstract: There is a problem that in the connection portion between a rare-earth-doped double clad fiber and a single mode fiber, pumping light leaks in a portion having the coating, and the fiber generates heat partially with this energy and deteriorates. Also, there is another problem that the output is limited as the oscillation wavelength becomes shorter. Accordingly, in a laser light source device formed by combining a fiber laser and a fiber amplifier, by using the residual pumping light in the fiber laser as the pumping light in the fiber amplifier, it is possible to enhance the reliability by preventing the fiber deterioration caused by the residual pumping light. Further, by amplifying the output in the fiber amplifier in the latter stage without any limitation on the pumping light output, it is possible to increase an output of the oscillation light.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: June 21, 2011
    Assignee: Panasonic Corporation
    Inventors: Hiroyuki Furuya, Kazuhisa Yamamoto, Kiminori Mizuuchi
  • Patent number: 7907809
    Abstract: Nanoparticles having a mean particle size of less than about 25 nanometers and a mean pore size of less than 10 nanometers, and a mean surface area of at least 500 m2/g; nanoporous films of such nanoparticles; and composites and devices containing such nanoparticles and nanoporous films.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: March 15, 2011
    Assignee: The Curators of the University of Missouri
    Inventors: Venumadhav Korampally, Shubhra Gangopadhyay, Luis Polo-Parada, Sangho Bok, Keshab Gangopadhyay
  • Patent number: 7847017
    Abstract: The present invention has an object to provide a photosensitive resin composition for optical waveguide formation, which has low transmission loss and can form a waveguide pattern with high shape accuracy at low cost; an optical waveguide; and a method for producing an optical waveguide. The present invention provides a photosensitive resin composition for optical waveguide formation comprising at least: a polymer containing at least a (meth)acrylate structure unit having an epoxy structure, and a (meth)acrylate structure unit having a lactone structure and/or a vinyl monomer structure unit having an aromatic structure; and a photoacid generator, of which one or both of a core layer and a cladding layer are formed of a cured product.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: December 7, 2010
    Assignee: NEC Corporation
    Inventors: Katsumi Maeda, Kaichiro Nakano
  • Patent number: 7842243
    Abstract: A chemical sensor based on an indicator dye wherein a light transmissive element containing the indicator dye is made of a hygroscopic polymer. The polymer may be, for example, a polyimide or PMMA or other polymer. In an alternative embodiment the light transmissive element is doped with metal nanocolloidal particles. One embodiment may include a reference photodiode and differential amplifier to compensate for the fluctuations of the intensity of the light source. The light source may be pulse modulated. The sensor may include calibration means comprising a reference sample of the chemical to be detected and a precision delivery means. A method of fabricating the polymer and metal nanocolloid is disclosed wherein the nanocolloid is produced by generating a pulsed laser plasma in a suspension of metal particles and an organic solvent and adding the resulting solvent colloid to a solution containing the polymer.
    Type: Grant
    Filed: February 17, 2007
    Date of Patent: November 30, 2010
    Inventors: Sergey Sergeyevich Sarkisov, Wiaczeslaw Mazuruk
  • Patent number: 7813615
    Abstract: Disclosed herein is a flexible film optical waveguide, which is in flexible film form and includes upper and lower cladding layers, each of which is formed of an organic-inorganic hybrid material, and a core layer provided between the upper and lower cladding layers and formed of an organic-inorganic hybrid material having a refractive index higher than that of the organic-inorganic hybrid material of each of the upper and lower cladding layers. In addition, a method of fabricating such a flexible film optical waveguide is also provided.
    Type: Grant
    Filed: February 3, 2006
    Date of Patent: October 12, 2010
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Byeong-Soo Bae, Woo-Soo Kim, Dong-Jun Kang
  • Patent number: 7799424
    Abstract: A resin composition includes an aliphatic polyester resin. The resin has carboxyl groups at the end termini of the molecular chain and at least one compound represented by the general formula (I), the compound being added to the resin to cap a part or all of the carboxyl groups at the end termini of the molecular chain of the resin. A process for producing a fiber includes mixing a pellet comprising an aliphatic polyester resin having carboxyl groups at the end termini of the molecular chain with a compound represented by the general formula (I) so that the content of the compound becomes 0.1 to 8% by weight and then melt-spinning the resulting mixture under the conditions of a spinning temperature of 200 to 250 C.°, a melt residence time of 180 to 1800 sec and a spinning rate of 500 to 10000 m/min.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: September 21, 2010
    Assignee: Toray Industries, Inc.
    Inventors: Katsuhiko Mochiduki, Takaaki Mihara
  • Patent number: 7796855
    Abstract: An electro-optic waveguide device comprising an electro-optic polymer core and at least one crosslinked polymer clad, wherein the crosslinked polymer clad is comprised of a first constitutional unit derived from a compound having the formula wherein, m=0-6; n=0-1; q=1-3; y=0-3; Ar1 is an aryl or heteroaryl group; and independently at each occurrence p=0-1; R is an alkyl, heteroalkyl, aryl, or heteroaryl group; Ar2 is an aryl or heteroaryl group; and X is a crosslinkable group. The R group may be an alkyl or heteroalkyl group with at least 6 atoms in a straight chain. In some embodiments, the R group is an alkoxy capped oligoalkylene group. Other embodiments include a polymer comprising a first constitutional unit derived from a compound having the formula described above.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: September 14, 2010
    Inventors: Lixin Zheng, Danliang Jin
  • Patent number: 7764855
    Abstract: An optical fiber having: a) a glass portion; and b) at least one protective coating layer disposed to surround the glass portion, the protective coating layer having a modulus of elasticity value between ?40° C. and +60° C. between 5 MPa and 600 MPa, preferably not higher than 500 MPa, more preferably not higher than 450 MPa and much more preferably not higher than 300. Preferably the protective coating layer is a single protective coating layer which is disposed in contact with the glass portion.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: July 27, 2010
    Assignee: Prysmian Cavi e Sistemi Energia S.R.L.
    Inventors: Giacomo Stefano Roba, Lidia Terruzzi, Sabrina Fogliani, Luca Castellani, Emiliano Resmini, Raffaella Donetti, Lisa Grassi
  • Publication number: 20100172623
    Abstract: A compound containing a crosslinkable moiety, a curable prepolymer, a blend, and a polymer sheet obtained therefrom, and an optical waveguide for optical interconnection. The compound is represented by the formula below: Ar—H wherein Ar includes a crosslinkable moiety at one end, a moiety selected from the group consisting of —O—, —S—, —COO—, —CO—, —COS—, —SO2—, and —NH—, and one or two repeating units selected from the group consisting of the following repeating units: wherein A in the repeating unit is carbon or nitrogen, and X is hydrogen or halogen. At least one of the core and the cladding in the optical waveguide includes the polymer sheet.
    Type: Application
    Filed: December 9, 2009
    Publication date: July 8, 2010
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung Koo PARK, Jung Jin Ju, Suntak Park, Jong-Moo Lee, Min-Su Kim, Jin Tae Kim, Joong-Seon Choe
  • Publication number: 20100166380
    Abstract: A polymer optical waveguide includes: at least one core through which light propagates; a cladding which surrounds the core and has a refractive index less than that of the core; at least one conductive wire being provided on at least one side of the cladding, the polymer optical waveguide having a sheet shape, the conductive wire including a conductive layer which is provided on the at least one side of the cladding and being partitioned by a first groove, and the core being formed between second grooves each of which is formed in at least a part of the first groove.
    Type: Application
    Filed: August 18, 2009
    Publication date: July 1, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Akira FUJII, Shigemi OHTSU, Keishi SHIMIZU, Kazutoshi YATSUDA, Toshihiko SUZUKI, Masahiro IGUSA
  • Publication number: 20100158441
    Abstract: A slow light optical dye doped polymer device for slowing the group velocity of an optical signal. In an embodiment, the slow light dye doped polymer device is a slow group velocity optical/near infrared (NIR) device formed of a substrate supporting a dye doped polymer waveguide layer sandwiched between two optically constraining polymer cladding layers. The waveguide layer includes at least one waveguide which supports Moiré grating slow light structures for slowing the group velocity of an optical signal traveling therein. In another embodiment, the slow light optical polymer device includes the slow group velocity optical portion and a slow phase velocity electrical portion. The slow phase velocity electrical portion is formed of a series cascade of combined inductive and capacitive elements generating an electrical field in a field region for transmitting encoded information between the optical portion and the electrical portion.
    Type: Application
    Filed: February 12, 2010
    Publication date: June 24, 2010
    Inventors: Alan R. Mickelson, Edward M. McKenna, JR.