Organic Patents (Class 385/143)
  • Patent number: 9816064
    Abstract: The present invention relates to photobioreactors and more particularly to the use of a transparent composition based on at least one methacrylic polymer for constructing installations for the culture of photosensitive organisms. This composition can be in the form of films, plates, profiled elements or cylinders such as tubes. The invention also relates to a transparent multilayer structure comprising at least one layer of a methacrylic polymer and one layer comprising at least one antifouling additive, and to the use thereof for constructing installations for the culture of photosensitive organisms.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: November 14, 2017
    Assignee: ARKEMA FRANCE
    Inventors: Patrick Delprat, Jerome Berge, Jean-Marc Boutillier
  • Patent number: 9784905
    Abstract: An optical waveguide includes a textured light-diffracting layer. The optical waveguide is made from a poly(aliphatic ester)-polycarbonate copolymer having very high flow properties and good impact properties. A method of manufacturing the waveguide by injection molding, a method of incorporating a microprism structure and a method of scattering light by directing light through a light-scattering layer thereby produced on the waveguide are also disclosed.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: October 10, 2017
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventor: Jon Michael Malinoski
  • Patent number: 9778509
    Abstract: One embodiment of the present invention relates to an optical conversion member including an optical conversion layer containing a quantum dot emitting fluorescent light which is excited by incident excitation light, in which the optical conversion layer contains a quantum dot and polyorganosilsesquioxane, and an adjacent inorganic layer is directly in contact with the optical conversion layer.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: October 3, 2017
    Assignee: FUJIFILM Corporation
    Inventor: Hiroyuki Ishikawa
  • Patent number: 9772443
    Abstract: An optical fiber is a linear radiator uniform in the longer direction thereof, and a lighting device uses the optical fiber. The optical fiber is a lighting fiber having a core and a cladding. In the fiber, as the cladding, there is used a polymer obtained by polymerizing a polymerizing ingredient containing 90% or more by weight of vinylidene fluoride, and the cladding has a crystallinity of 45% to 52%.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: September 26, 2017
    Assignee: Toray Industries, Inc.
    Inventors: Hironobu Maeda, Ryuichi Kamei, Shinji Sato
  • Patent number: 9459530
    Abstract: The present invention provides a photosensitive epoxy resin composition which contains: (A) a cresol novolak polyfunctional epoxy resin; (B) a liquid epoxy resin having a fluorene skeleton in its main chain; and (C) a photoacid generator; wherein the components (A) and (B) are present in a mixing weight ratio of (A)/(B)=40/60 to 60/40. Where the inventive photosensitive epoxy resin composition is used as an optical waveguide forming material, particularly as an optical waveguide core layer forming material for formation of a core layer, the optical waveguide core layer can be formed as having excellent reflow resistance and a lower loss through a coating process and a roll-to-roll process without altering the conventional production process.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: October 4, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Tomoyuki Hirayama, Naoyuki Tanaka
  • Patent number: 9447318
    Abstract: According to one embodiment, a method includes incorporating a metal carboxylate complex into a polymeric matrix to form an optically transparent material. According to another embodiment, a material includes at least one metal carboxylate complex incorporated into a polymeric matrix, where the material is optically transparent.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: September 20, 2016
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Nerine Cherepy, Robert Dean Sanner
  • Patent number: 9304251
    Abstract: To provide a plastic optical fiber using amorphous fluorinated polymers whereby transmission loss and bending loss are low, no cracking takes place during stretching, and a wide range of molding conditions is acceptable.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: April 5, 2016
    Assignee: Asahi Glass Company, Limited
    Inventors: Toshiyuki Tanaka, Nobuyuki Kasahara, Masakuni Sato, Hiroshi Yamamoto, Susumu Saito, Tetsuji Shimohira, Yoshinobu Takano, Naoto Ota
  • Patent number: 9201169
    Abstract: An optical waveguide for optical interconnection including a polymer sheet comprising a crosslinked product of a prepolymer, the prepolymer prepared by condensation reaction between a first compound represented by the formula Ar—H, where Ar comprises (a) a crosslinkable moiety at one end, (b) a moiety selected from the group consisting of —O—, —S—, —COO—, —CO—, —COS—, —SO2—, and —NH—, and (c) one or two repeating units selected from the group consisting of: where A is carbon or nitrogen, and X is hydrogen or halogen; and a second compound consisting of an aromatic moiety.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: December 1, 2015
    Assignee: 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
  • Patent number: 9151849
    Abstract: An optical fiber can include a polymer and a scintillation quencher. The optical fiber can be a member of a radiation sensor or radiation detecting system. The scintillation quencher can include a UV-absorber or a scintillation resistant material. In one embodiment, the radiation sensor includes a scintillator that is capable of generating a first radiation having a wavelength of at least about 420 nm; and a scintillation quencher is capable of absorbing a second radiation having a wavelength of less than about 420 nm. The optical fiber including a scintillation quencher provides for a method to detect neutrons in a radiation detecting system.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: October 6, 2015
    Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.
    Inventor: Michael R. Kusner
  • Patent number: 9075303
    Abstract: An excellent optical waveguide forming epoxy resin composition is provided, comprising: (A) a liquid epoxy resin; (B) a solid resin; and (C) a photoacid generator; wherein the liquid epoxy resin (A) comprises a liquid epoxy resin represented by the following general formula (1) as a major component thereof in a proportion of 50 to 80 wt % based on an overall amount of a resin component of the resin composition: 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 5, 2013
    Date of Patent: July 7, 2015
    Assignee: NITTO DENKO CORPORATION
    Inventor: Tomoyuki Hirayama
  • 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: 8934741
    Abstract: An integrated circuit is configured for optical communication via an optical polymer stack located on top of the integrated circuit. The optical polymer stack may include one or more electro-optic polymer devices including an electro-optic polymer. The electro-optic polymer may include a host polymer and a second order nonlinear chromomophore, the host polymer and the chromophore both including aryl groups configured to interact with one another to provide enhanced thermal and/or temporal stability.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: January 13, 2015
    Assignee: Brphotonics Produtos Optoelectronicos LTDA
    Inventors: Baoquan Chen, Hui Chen, Raluca Dinu, Diyun Huang, Bing Li, Eric Miller, Danliang Jin, Christopher A. Wiklof, Guomin Yu
  • Patent number: 8923681
    Abstract: An optical fiber core having a primary layer and a secondary layer, which are laminated on a bare optical fiber. The primary layer is formed by curing an ultraviolet-curable resin composition containing a first silane coupling agent, which can be incorporated into a resin skeleton, and a second silane coupling agent, which cannot be incorporated into a resin skeleton. The first silane coupling agent contains a compound having a methoxy group, and the second silane coupling agent contains a compound having an ethoxy group.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: December 30, 2014
    Assignee: Fujikura Ltd.
    Inventors: Akira Namazue, Akira Murata, Mizuki Isaji
  • Patent number: 8909020
    Abstract: The present invention relates to a liquid crystal display including a pixel electrode including a first subpixel electrode and a second subpixel electrode spaced apart with a gap therebetween, a common electrode facing the pixel electrode, and a liquid crystal layer formed between the pixel electrode and the common electrode and including a plurality of liquid crystal molecules. The first and second subpixel electrodes include a plurality of branches, and each of the first and second subpixel electrodes includes a plurality of subregions. The branches extend in different directions in different subregions.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: December 9, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Mee-Hye Jung, Ji-Won Sohn, Jae-Jin Lyu, Chong-Chul Chai
  • Patent number: 8891932
    Abstract: The invention provides an amplification module for an optical printed circuit board, the optical printed circuit board including plural polymer waveguide sections from independent waveguides, each of the sections being doped with an amplifying dopant, wherein the plural waveguide sections are routed so as to pass through an amplification zone in which the plural polymer waveguide sections are arranged close or adjacent to one another, the amplification module including: a pump source including plural light sources arranged to provide independently controllable levels of pump radiation to each of the plural waveguide sections. In an embodiment, the amplification module also includes plural polymer waveguide sections corresponding to the plural polymer waveguides of the printed circuit board on which in use the amplification module is to be arranged, each of the sections being doped with an amplifying dopant.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 18, 2014
    Assignee: Xyratex Technology Limited
    Inventor: Richard Charles Alexander Pitwon
  • 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: 8818160
    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: May 6, 2013
    Date of Patent: August 26, 2014
    Assignee: NP Photonics, Inc.
    Inventors: Arturo Chavez-Pirson, Daniel Larry Rhonehouse, Dan T. Nguyen
  • Publication number: 20140231656
    Abstract: An optical fiber can include a polymer and a scintillation quencher. The optical fiber can be a member of a radiation sensor or radiation detecting system. The scintillation quencher can include a UV-absorber or a scintillation resistant material. In one embodiment, the radiation sensor includes a scintillator that is capable of generating a first radiation having a wavelength of at least about 420 nm; and a scintillation quencher is capable of absorbing a second radiation having a wavelength of less than about 420 nm. The optical fiber including a scintillation quencher provides for a method to detect neutrons in a radiation detecting system.
    Type: Application
    Filed: April 29, 2014
    Publication date: August 21, 2014
    Applicant: Saint-Gobain Ceramics & Plastics, Inc.
    Inventor: Michael R. Kusner
  • 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
  • Publication number: 20140219625
    Abstract: An optical waveguide for optical interconnection including a polymer sheet comprising a crosslinked product of a prepolymer, the prepolymer prepared by condensation reaction between a first compound represented by the formula Ar—H, where Ar comprises (a) a crosslinkable moiety at one end, (b) a moiety selected from the group consisting of —O—, —S—, —COO—, —CO—, —COS—, —SO2—, and —NH—, and (c) one or two repeating units selected from the group consisting of: where A is carbon or nitrogen, and X is hydrogen or halogen; and a second compound consisting of an aromatic moiety.
    Type: Application
    Filed: April 8, 2014
    Publication date: August 7, 2014
    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
  • Patent number: 8787723
    Abstract: A resin composition for forming an optical waveguide, containing (A) a polyhydroxy polyether having an ethylenically unsaturated group on a side chain and an aromatic ring on a main chain, (B) a polymerizable compound having an ethylenically unsaturated group, and (C) a radical polymerization initiator; a resin film for forming an optical waveguide; and an optical waveguide having a core part formed by using the resin film for forming an optical waveguide.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: July 22, 2014
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Tatsuya Makino, Toshihiko Takasaki, Masami Ochiai, Atsushi Takahashi
  • Patent number: 8760763
    Abstract: Disclosed is a high refractive index material having a high refractive index, which enables the formation of a waveguide by a simpler method. Also disclosed are a high refractive index member made from the high refractive index material, and an image sensor. The high refractive index material contains a resin (A) having a structural unit represented by the following general formula (a-1) [In the formula, R1 is a hydrocarbon group, R2 is a hydrogen atom or a hydrocarbon group, and m is an integer of 0 or 1.].
    Type: Grant
    Filed: July 4, 2007
    Date of Patent: June 24, 2014
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventor: Yoshiyuki Takeuchi
  • Patent number: 8716421
    Abstract: This invention discloses and claims a series of polycyclic monomers and polymers useful in the production of optical waveguides. The polymers of the invention comprise one or more repeating units represented by the formula (IV): Wherein m, X, R1 and R2 are as defined herein. The films formed from the polymers of this invention exhibit significant changes in refractive index (greater than or equal to 0.5%) after exposure to suitable actinic or thermal energy thereby having superior optical transmission performance, which is of importance for modern optical applications such as wave guiding and optical data storage.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: May 6, 2014
    Assignees: Promerus, LLC, Sumitomo Bakelite Co., Ltd
    Inventors: Kazuyoshi Fujita, Nanae Kawate, Mari Ueda, Larry F Rhodes
  • Patent number: 8624259
    Abstract: An organic light-emitting display device includes a substrate; a thin-film transistor on the substrate; a first insulating layer covering the thin-film transistor; a first electrode on the first insulating layer, and electrically connected to the thin-film transistor; a second insulating layer on the first insulating layer so as to cover the first electrode, and having an opening for exposing a part of the first electrode; a porous member in the second insulating layer; a second electrode on the second insulating layer, and facing the first electrode so as to correspond to the opening; and an organic emission layer between the first electrode and the second electrode so as to correspond to the opening. The organic light-emitting display device may prevent degradation of characteristics of an organic light-emitting device due to discharge of gas from an organic material.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: January 7, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yeon-Hwa Lee, Won-Jong Kim, Ji-Young Choung, Joon-Gu Lee, Darby Choi, Young-Woo Song, Jong-Hyuk Lee
  • 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: 8574468
    Abstract: A benzo-fused-heterocyclic elongated dye having a superior molecular hyperpolarizability and yet having an acceptably-low optical absorbance of light near 1550 nm in wavelength, which is an important optical communication band for telecommunication applications.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: November 5, 2013
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: Matthew C. Davis, Andrew P. Chafin, Geoffrey A. Lindsay
  • Patent number: 8574467
    Abstract: A benzo-fused-heterocyclic elongated dye having a superior molecular hyperpolarizability and yet having an acceptably-low optical absorbance of light near 1550 nm in wavelength, which is an important optical communication band for telecommunication applications.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: November 5, 2013
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: Matthew C. Davis, Andrew P. Chafin, William Lai, Geoffrey A. Lindsay
  • 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: 8483524
    Abstract: An electro-optic polymer semiconductor integrated circuit includes one or more doped regions configured to drive one or more electrodes, and the electrodes are configured to drive a juxtaposed electro-optic core. The assembly may include a planarization layer disposed at least partially coplanar with the electrodes. The circuit may include an integrated multiplexer, driver configured to receive a signal from the multiplexer, at least one high speed electrode configured to be driven by the driver and modulate light energy passed through a hyperpolarizable poled chromophore regions disposed near the high speed electrode. The circuit may include a calibration storage circuit. The circuit may include, during fabrication, structures to provide voltage to a buried electrode and a shield to prevent damage from the poling field.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: July 9, 2013
    Assignee: GigOptix, Inc.
    Inventors: Bing Li, Raluca Dinu, Eric Miller, Danliang Jin, Hui Chen, Christopher A. Wiklof
  • 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
  • Publication number: 20130084051
    Abstract: An optical fiber core having a primary layer and a secondary layer, which are laminated on a bare optical fiber. The primary layer is formed by curing an ultraviolet-curable resin composition containing a first silane coupling agent, which can be incorporated into a resin skeleton, and a second silane coupling agent, which cannot be incorporated into a resin skeleton. The first silane coupling agent contains a compound having a methoxy group, and the second silane coupling agent contains a compound having an ethoxy group.
    Type: Application
    Filed: November 29, 2012
    Publication date: April 4, 2013
    Applicant: FUJIKURA LTD.
    Inventor: FUJIKURA LTD.
  • 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: 8349222
    Abstract: Unconventional twisted ?-electron system electro-optic (EO) chromophores/compounds, compositions and related device structures. Crystallographic analysis of several non-limiting chromophores reveals, for instance, large ring-ring dihedral twist angles and a highly charge-separated zwitterionic structure in the ground state, in both solution phase and solid-state.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: January 8, 2013
    Assignee: Northwestern University
    Inventors: Tobin J. Marks, Hu Kang
  • 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: 8232028
    Abstract: An optical medium is provided. The optical medium comprises: a diffusion-controlling matrix framework; at least one photoactive monomer attached to the diffusion-controlling matrix framework in a first state of the optical medium, wherein the at least one photoactive monomer is released from the diffusion-controlling matrix framework by photo cleavage, producing a second state of the optical medium, in which diffusion of the photoactive monomer through the optical medium is possible; and wherein the at least one photoactive monomer is then polymerized or reattached to the diffusion-controlling matrix, giving a third state of the optical medium, when exposed to photo-polymerizing light.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: July 31, 2012
    Assignee: Inphase Technologies, Inc.
    Inventor: Fredric R. Askham
  • Patent number: 8175439
    Abstract: A curable composition for an optical material including a specific silicon-containing polymer (A), a specific epoxy resin (B) and an energy ray-sensitive cationic polymerization initiator (C) as essential components.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: May 8, 2012
    Assignee: Adeka Corporation
    Inventors: Naofumi Fujiue, Kenji Hara, Yoshihiro Ishikawa, Yoshikazu Shoji
  • 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: 7974510
    Abstract: A waveguide having a spatially-variable refractive index is disclosed. The waveguide having a spatially-variable refractive index comprises a light-propagating medium and a non-uniform distribution of liquid crystal material in a matrix of dielectric material located in a portion of the light-propagating medium.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: July 5, 2011
    Assignee: Agilent Technologies, Inc.
    Inventor: Charles D. Hoke
  • Patent number: 7968016
    Abstract: Unconventional twisted ?-electron system electro-optic (EO) chromophores/compounds, compositions and related device structures. Crystallographic analysis of several non-limiting chromophores reveals, for instance, large ring-ring dihedral twist angles and a highly charge-separated zwitterionic structure in the ground state, in both solution phase and solid-state.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: June 28, 2011
    Assignee: Northwestern University
    Inventors: Tobin J. Marks, Hu Kang
  • Patent number: 7865055
    Abstract: The invention relates to coated optical fibers comprising soft primary coatings and to such primary coatings for protecting glass optical fibers having a sufficient high resistance against cavitation. In particular, the primary coatings have a cavitation strength at which a tenth cavitation appears (?10cav) of at least about 1.0 MPa as measured at a deformation rate of 0.20% min?1 and of at least about 1.4 times their storage modulus at 23° C. The coating preferably shows strain hardening in a relative Mooney plot, preferably has a strain energy release rate Go of about 20 J/m2 or more, and preferably has a low volumetric thermal expansion coefficient. The invention furthermore provides a method and apparatus for measuring the cavitation strength of a primary coating.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: January 4, 2011
    Assignee: DSM IP Assets B.V.
    Inventors: Markus J. H. Bulters, Gerrit Rekers, Philippe W. P. V. Bleiman, Jozef M. H. Linsen, Alexander A. M. Stroeks, Johannes A. Van Eekelen, Adrianus G. M. Abel, Marko Dorschu, Paulus A. M. Steeman
  • 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: 7824582
    Abstract: Unconventional twisted ?-electron system electro-optic (EO) chromophores/compounds, compositions and related device structures. Crystallographic analysis of several non-limiting chromophores reveals, for instance, large ring-ring dihedral twist angles and a highly charge-separated zwitterionic structure in the ground state, in both solution phase and solid-state.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: November 2, 2010
    Assignee: Northwestern University
    Inventors: Tobin J. Marks, Hu Kang
  • 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: 7811640
    Abstract: This invention describes methods for fabricating polymer optical waveguides, and polymer optical waveguides themselves wherein at least one of the optical layers is deposited by a two-stage deposition process. In particular, the two-stage deposition process comprises spinning as the second step. Preferably, the polymer optical waveguide comprises a three layer structure comprising a lower cladding layer, a light guiding core layer and an upper cladding layer, supported on a substrate. The invention has particular application to the volume production of polymer optical waveguides on large area substrates.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: October 12, 2010
    Assignee: RPO Pty Limited
    Inventors: Robert Bruce Charters, Dax Kukulj, Ian Andrew Maxwell, Graham Roy Atkins
  • 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