By Casting On A Liquid Surface Patents (Class 264/298)
  • Patent number: 9159978
    Abstract: The present invention is directed to a sheet product and to a method of forming the sheet product suitable for use as a battery separator. The method comprises forming a mixture of a thermoplastic polymer and fluid having a high vapor pressure, shaping the mixture into a sheet material and subjecting the sheet material to stretching/fluid vaporization at high temperature to form an intermediate material having a ratio of percent fluid to percent polymer crystallinity of between 0.15 and 1 followed by a second stretching/fluid vaporization at a lower temperature while removing a portion of the remainder of the fluid from the sheet. The resultant sheet is annealed and remainder of fluid removed to form a sheet product having a thickness comprising a stratified structure of small and larger pore layered configuration across its thickness.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: October 13, 2015
    Assignee: APOROUS, INC.
    Inventor: William Winchin Yen
  • Patent number: 8936744
    Abstract: There are provided a fluorine-containing photocurable resin composition and a method of preparing a mold comprising the same and more particularly, a photocurable resin composition having chemical resistance, mechanical properties and high transmittance, etc. as well as being easily wetted with and released from thermosetting or photocurable resins for pattern formation regardless of additional surface treatment, as opposed to the existing polymer resin materials used for resin molds, and a method of preparing a resin mold using the same.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: January 20, 2015
    Assignee: Dongjin Semichem Co., Ltd.
    Inventors: Jae-won Yoo, Byung-uk Kim, Un-yong Kim, Eun-jin Kwak
  • Patent number: 8907299
    Abstract: The present disclosure provides a method of manufacturing film member for laser-driven ion acceleration, a film target, and a method of manufacturing the same, so that only the film member exists at a laser focusing point on the film target, allowing repeated ion acceleration from the film member by focusing high power laser beams thereon. The method includes preparing a film member solution containing a film material to be used for laser-driven ion acceleration; forming a film member on a base substrate by using the film member solution; and separating the film member from the base substrate by dipping the base substrate having the film member formed thereon into a film parting solvent.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: December 9, 2014
    Assignee: Gwangju Institute of Science and Technology
    Inventors: Il Woo Choi, Jongmin Lee, Chang-Lyoul Lee, KeeHwan Nam, I Jong Kim, Ki Hong Pae
  • Patent number: 8815140
    Abstract: To provide a method of producing a film, comprising: ejecting a liquid B over a liquid surface of an active energy ray-curable liquid as a liquid A by an inkjet process, according to a predetermined periodic signal; and subsequently applying an active energy ray to the liquid A and the liquid B so as to perform curing and obtain a film which comprises a pattern according to any one of (1) to (4) below, (1) a smooth pattern having a periodic amplitude based upon a trigonometric function, (2) a pattern having a periodic depression, (3) a pattern in the form of a periodic flat surface, and (4) a pattern having a periodic semicylindrical shape.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: August 26, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Tamotsu Aruga, Shinya Seno, Masayuki Koyano, Eiji Noda, Noriyasu Takeuchi, Tsutomu Maekawa, Takao Hiraoka, Tomoko Hasegawa, Okitoshi Kimura, Soh Noguchi
  • Patent number: 8663745
    Abstract: Provided is a film-forming method based on an LB method by which a uniform alignment film using a helical polyacetylene can be obtained. The method based on the LB method includes: developing a helical polyacetylene onto a liquid surface; and transferring a monolayer film of the helical polyacetylene formed on the liquid surface onto a substrate to form a film, in which a compressibility P represented by the following formula (1) at a time of the film formation is 1×10?2 m/mN or less: P=(1/(dH/dS))×(1/S) (1), where H represents a surface pressure (mN/m) of the monolayer film of the helical polyacetylene, and S represents an area (m2) of the monolayer film of the helical polyacetylene developed onto the liquid surface.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: March 4, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koji Yano, Otto Albrecht, Kunihiro Mitsutake, Takeyuki Sone
  • Patent number: 8652378
    Abstract: The present invention relates to rapid dissolve thin film drug delivery compositions for the oral administration of active components. The active components are provided as taste-masked or controlled-release coated particles uniformly distributed throughout the film composition. The compositions may be formed by wet casting methods, where the film is cast and controllably dried, or alternatively by an extrusion method.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: February 18, 2014
    Assignee: MonoSol Rx LLC
    Inventors: Robert K. Yang, Richard C. Fuisz, Garry L. Myers, Joseph M. Fuisz
  • Publication number: 20130327703
    Abstract: A film using fullerene derivatives, a method for producing such films, and use of same are provided. In the film formed of hemispherical particles according to the present invention, the hemispherical particles are organized like a hexagonal close-packed structure, and are formed by specific fullerene derivatives. The hemispherical particles preferably have a bilayer membrane structure assembled to provide a flake-like surface for the hemispherical particles.
    Type: Application
    Filed: December 28, 2011
    Publication date: December 12, 2013
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventor: Takashi Nakanishi
  • Patent number: 8557164
    Abstract: A liquid discharge head includes a substrate having an energy generating element configured to generate energy required to discharge liquid, a discharge port configured to discharge the liquid and provided in an opposed relationship to the energy generating element, a wall member defining a chamber adapted to store the energy required to discharge liquid the energy being generated by the energy generating element, a discharge portion defining a fluid path connecting the chamber and the discharge port, a supply path facilitating supplying the liquid into the chamber, and a pair of hollow portions provided in the wall member, wherein the hollow portions oppose each other and sandwich at least the entire discharge port in a direction from the discharge port to the substrate, and the hollow portions are independent of the chamber.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: October 15, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naozumi Nabeshima, Toru Yamane, Takumi Suzuki, Masahiko Kubota, Tamaki Sato, Ryoji Kanri, Maki Hatta, Kazuhiro Asai
  • Publication number: 20130256122
    Abstract: A system includes an electrochemically functional membrane, and a support structure constructed and arranged so as to support the membrane while leaving within the membrane a chemically active area having an area utilization of at least about 50%. In some embodiments, the support structure may include a plurality of grids that are sized and shaped so that the contact area between the grids and the membrane is reduced to less than about 40%. In some embodiments, the support structure may include aerogels, for example PVA-reinforced CNT aerogels having a conductivity that is increased by pyrolysis. The system may be a gas separation system; a gas production system; a gas purification system; or an energy generation system such as an SOFC.
    Type: Application
    Filed: August 31, 2011
    Publication date: October 3, 2013
    Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Shriram Ramanathan, Daniel V. Harburg, Masaru Tsuchiya, Alexander C. Johnson
  • Publication number: 20130260088
    Abstract: A consolidated fibrous mat comprises 20 to 50 weight percent of reinforcing fibers; and a continuous phase connecting the reinforcing fibers, comprising 50 to 70 weight percent of a polymer having a melt temperature at least 20° C. lower than the reinforcing fibers, and 5 to 10 weight percent of a binder having a melt temperature lower than the polymer; wherein the weight percent of each of the reinforcing fibers, the polymer, and the binder is based on the combined total weight of the reinforcing fibers, the polymer, and the binder.
    Type: Application
    Filed: March 14, 2013
    Publication date: October 3, 2013
    Applicant: SABIC Innovative Plastics IP B.V.
    Inventors: Benny Ezekiel David, Kim R. Choate, Dennis Lockyer, Thomas Adjei, Vincent L. Lanning, Craig Lawrence Milne, Erich Otto Teutsch
  • Patent number: 8535586
    Abstract: A family of functionalized polymers is provided capable of forming membranes having exceptional OH? ionic conductivity as well as advantageous mechanical properties, which may be applied to membranes including such polymers for use in, e.g., AEMFC/HEMFC fuel cells. Preferred functional groups include a quaternary phosphonium, and the polymer may specifically be (tris(2,4,6-trimethoxyphenyl) phosphine)3 functionalized phosphonium polysulfone hydroxide, ECL-PVBC-QPOH, or QPOH based on any of the commercial polumers including polycarbonate (PC), poly(2,6-dimethyl-1,4-phenylene oxide) (PPO), polyetherimine (PEI), poly(ether sulfone) (PES), poly(phenylene sulfoxide) PPS, poly(ether ether ketone) (PEEK), or polybenzimidazole (PBI), polyvinyl chloride (PVC). An ionomer membrane may include polysulfone based TPQPOH, ECL-PVBC-QPOH, and/or PPO.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: September 17, 2013
    Assignee: The Regents of the University of California
    Inventors: Yushan Yan, Shuang Gu, Feng Wang
  • Patent number: 8398899
    Abstract: A method for manufacturing an optical waveguide includes: step A of forming a first resin layer 23 by allowing a first liquid-state resin to flow to be extended in a manner so as to bury and enclose cores 22; step B of forming a second resin layer 25 by allowing a second liquid-state resin having a viscosity higher than that of the first liquid-state resin to flow to be extended on the first resin layer 23, after or while the first resin layer 23 is heated; and step C of forming an over-cladding layer 26 by curing the first resin layer 23 and the second resin layer 25.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: March 19, 2013
    Assignee: Nitto Denko Corporation
    Inventor: Ryusuke Naitou
  • Publication number: 20130049247
    Abstract: In a process for the preparation of inorganic sample disks for analysis, the sample, in powdered form, is mixed with a powdered reagent flux which has been pre-melted. In an inert gas atmosphere, the mixture is placed in a graphite crucible and heated to a temperature slightly above 1000° C. After the flux dissolves the sample, a homogenous mix is produced. This mix is then poured into a graphite mold, the bottom of which contains a molten pool of an inert metal, such as gold, which acts as a smooth receiving surface. Upon cooling, the material in the mold solidifies, resulting in a glassy disk that can be analyzed. Cooling can be accelerated by making use of a cooling fluid that has a substantially higher thermal capacity than air.
    Type: Application
    Filed: August 30, 2011
    Publication date: February 28, 2013
    Inventors: Marc Boivin, Alain Chantal, Pierre-Emmanuel LeMay, Luc Saint-Pierre
  • Publication number: 20130029126
    Abstract: The present invention is directed to a sheet product and to a method of forming the sheet product suitable for use as a battery separator. The method comprises forming a mixture of a thermoplastic polymer and fluid having a high vapor pressure, shaping the mixture into a sheet material and subjecting the sheet material to stretching/fluid vaporization at high temperature to form an intermediate material having a ratio of percent fluid to percent polymer crystallinity of between 0.15 and 1 followed by a second stretching/fluid vaporization at a lower temperature while removing a portion of the remainder of the fluid from the sheet. The resultant sheet is annealed and remainder of fluid removed to form a sheet product having a thickness comprising a stratified structure of small and larger pore layered configuration across its thickness.
    Type: Application
    Filed: February 24, 2012
    Publication date: January 31, 2013
    Inventor: William Winchin Yen
  • Patent number: 8211969
    Abstract: A dispersion includes non-chemically modified carbon nanotubes, a soluble block copolymer providing at least one block of a conjugated polymer and at least one block of a non-conjugated polymer, and at least one solvent. At 25° C. exclusive of any mechanical force and after one hour, at least 90% of the carbon nanotubes exist in the dispersion as isolated carbon nanotubes. The components of the dispersion can be combined with a polymer miscible with the block copolymer to form a carbon nanotube polymer composite upon removal of the solvent. The dispersion can be cast on a substrate and then dried to form a coating, including forming a superhydrophobic coating on the substrate. The non-conjugated polymer of the block copolymer or another miscible conjugated polymer including a copolymer can include functionalities that non-covalently attach to the carbon nanotube surface, such as for enhanced solubility or enhanced biocompatibility.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: July 3, 2012
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Jianhua Zou, Lei Zhai, Qun Huo
  • Publication number: 20110280784
    Abstract: A method for producing a solid layer material (42), comprising providing (70) a first layer (30); providing (72) a second liquid layer (32) on the first layer (30); providing (74) a third liquid layer (34) on the second liquid layer (32), wherein the third liquid layer has a melting point that is higher than a melting point of the second liquid layer, and wherein the second liquid layer is between the first and third layers; cooling (76) a surface of the third liquid layer to a temperature less than the melting point of the third liquid layer; forming (78) the solid layer from the third liquid layer while cooling the third layer liquid; and removing (80) the solid layer.
    Type: Application
    Filed: November 13, 2009
    Publication date: November 17, 2011
    Applicant: CARNEGIE MELLON UNIVERSITY
    Inventors: Birger Erik Ydstie, Sudhir Ranjan, Balaji Sukumar, Sridhar Seetharaman
  • Publication number: 20110254384
    Abstract: Methods and apparatus for hydrodischarging and hydrocharging substrates and articles to produce enhanced ability to avoid attraction of contaminants or improved capability of removing contaminants from fluids are disclosed. In another form the method involves removal of electric charges or neutralization of charge on or within substrates. Also disclosed are methods of making using electret substrates and articles for removing particulates and mists from fluid streams.
    Type: Application
    Filed: June 21, 2011
    Publication date: October 20, 2011
    Inventor: William K. Leonard
  • Patent number: 8012382
    Abstract: Chemically or biochemically active agents or other species are patterned on a substrate surface by providing a micromold having a contoured surface and forming, on a substrate surface, a chemically or biochemically active agent or fluid precursor of a structure. A chemically or biochemically active agent or fluid precursor also can be transferred from indentations in an applicator to a substrate surface. The substrate surface can be planar or non-planar. Fluid precursors of polymeric structures, inorganic ceramics and salts, and the like can be used to form patterned polymeric articles, inorganic salts and ceramics, reactive ion etch masks, etc. at the surface. The articles can be formed in a pattern including a portion having a lateral dimension of less than about 1 millimeter or smaller. The indentation pattern of the applicator can be used to transfer separate, distinct chemically or biochemically active agents or fluid precursors to separate, isolated regions of a substrate surface.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: September 6, 2011
    Assignee: President and Fellows of Harvard College
    Inventors: Enoch Kim, Younan Xia, Milan Mrksich, Rebecca J. Jackman, Xiao-Mei Zhao, Stephen P. Smith, Christian Marzolin, Mara G. Prentiss, George M. Whitesides
  • Patent number: 7981329
    Abstract: A method of manufacturing an optical component is provided. The method comprises steps of providing a first liquid; providing a fluid, disposed above the first liquid, wherein an interface exists between the first liquid and the fluid; providing a polymer precursor at the interface; and solidifying the polymer precursor so as to form the optical component made by a polymer.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: July 19, 2011
    Assignee: National Tsing Hua University
    Inventors: Chih-Chun Lee, Sheng-Yi Hsiao, Weileun Fang
  • Publication number: 20110120871
    Abstract: To form a layer separating two volumes of aqueous solution, there is used an apparatus comprising elements defining a chamber, the elements including a body of non-conductive material having formed therein at least one recess opening into the chamber, the recess containing an electrode. A pre-treatment coating of a hydrophobic fluid is applied to the body across the recess. Aqueous solution, having amphiphilic molecules added thereto, is flowed across the body to cover the recess so that aqueous solution is introduced into the recess from the chamber and a layer of the amphiphilic molecules forms across the recess separating a volume of aqueous solution introduced into the recess from the remaining volume of aqueous solution.
    Type: Application
    Filed: December 15, 2008
    Publication date: May 26, 2011
    Inventors: Stuart William Reid, Terence Alan Reid, James Anthony Clarke, Steven Paul White, Gurdial Singh Sanghera
  • Publication number: 20110083793
    Abstract: An object of the present invention is to provide a method for stably forming an artificial lipid membrane while suppressing the leakage and evaporation of an electrolytic solution. The present invention is an artificial lipid membrane forming method for forming an artificial lipid membrane using an artificial lipid membrane forming apparatus. The artificial lipid membrane forming apparatus comprises a first chamber, a second chamber, a dividing wall, and an artificial lipid membrane forming portion. Each of the first chamber and the second chamber has a capacity of not smaller than 10 pl and not larger than 200 ?l. The artificial lipid membrane forming method of the present invention comprises the steps of: preparing the artificial lipid membrane forming apparatus; adding to the first chamber a first electrolytic solution having a viscosity of not lower than 1.
    Type: Application
    Filed: December 17, 2010
    Publication date: April 14, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Akio OKI, Norihito Tsukahara, Masato Suzuki, Hiroaki Oka
  • Patent number: 7858003
    Abstract: A soft mold includes a polymer layer having a printing pattern on at least a first surface thereof; and a back-plane attached to a second surface of the polymer layer.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: December 28, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Gee Sung Chae, Gyoo Chul Jo, Jin Wuk Kim, Chang Hee Lee
  • Publication number: 20100239869
    Abstract: A method for forming a film of graphite oxide single layers. In one embodiment, the method includes the steps of preparing a solution of graphite oxide to allow a plurality of graphite oxide single layers to be formed and dispersed in the solution; and applying the solution of graphite oxide onto an air-water interface of water to form a film at the air-water interface, wherein the film comprises a plurality of graphite oxide single layers and is characterized by a packing density, wherein the film of graphite oxide single layers is formed with no presence of a surfactant or stabilizing agent.
    Type: Application
    Filed: March 22, 2010
    Publication date: September 23, 2010
    Applicant: Northwestern University
    Inventors: Jiaxing Huang, Laura J. Cote, Franklin J. Kim
  • Patent number: 7790074
    Abstract: A method of forming a three-dimensional object comprises ejecting drops of liquefied material into a vat using an ejector; scanning the ejector in first and second mutually opposed directions to induce the drops of liquefied material from the ejector to deposit and solidify in a predetermined sequence to sequentially form layers of the three-dimensional object; supplying a viscous liquid into the vat to a level which is essentially level with the top of a most recently formed layer of the three-dimensional object; and raising the level of the viscous liquid in accordance with the formation of new layers.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: September 7, 2010
    Assignee: Houston-Packard Development Company, L.P.
    Inventors: Alfred I-Tsung Pan, Laurie S. Mittelstadt
  • Patent number: 7708921
    Abstract: A cast web formed on a support in a casting process is peeled off the support by a first roller in a peeling and conveying process. As being peeled by the first roller, the cast web forms a film, and conveyed through a second roller to a tenter drying process. The peeling and conveying process has a length from a peeling position to a holding position of the film by clips. The length is set to be 10% to 80% of the width of the cast web. The first and second rollers are concave rollers. A couple of blowers are disposed at the end of the peeling and conveying process, to blow the lateral sides of the film in laterally outward directions of the film, to stretch curls in the lateral sides of the film.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: May 4, 2010
    Assignee: FUJIFILM Corporation
    Inventor: Takashi Takeuchi
  • Patent number: 7649953
    Abstract: The present invention achieves differential transmit diversity and related diversity reception schemes transmit symbol constellations which are extended to multiple levels. Heretofore, a group of transmission bits is divided into a first sub-group of transmission bits and a second sub-group of transmission bits. Then, the first sub-group of transmission bits is mapped (14) onto constellation points of a differential transmit diversity coding scheme from an orthogonal design for coding of the first sub-group of transmission bits. Then, after differential encoding of the constellation points (32, 34, 36, 40) a length of the transmission symbol vector is scaled (38) for coding the second sub-group of transmission bits. Therefore, the present invention overcomes restrictions implied through unit length requirements for previously known differential transmit diversity schemes from orthogonal designs.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: January 19, 2010
    Assignee: NTT DoCoMo, Inc.
    Inventor: Gerhard Bauch
  • Publication number: 20090178969
    Abstract: The invention provides a polymer separation membrane that is excellent in separating characteristics, a permeating ability, a chemical strength (particularly chemical resistance) and a physical strength, and also excellent in a stain resistance, and a producing method therefor. The fluorinated resin-type polymer separation membrane includes a layer having a three-dimensional network structure, and a layer having a spherical structure, wherein the layer of three-dimensional network structure is formed by a fluorinated resin-type polymer composition containing a hydrophilic polymer, and the hydrophilic polymer is a substantially water-insoluble hydrophilic polymer containing at least one of a cellulose ester, an aliphatic vinyl ester, vinylpyrrolidone, ethylene oxide and propylene oxide as a polymerization component. The polymer separation membrane is applicable as a filtration membrane for water treatment, a battery separator, a charged membrane, a fuel cell membrane or a blood cleaning filtration membrane.
    Type: Application
    Filed: June 27, 2006
    Publication date: July 16, 2009
    Applicant: Toray Industries, Inc
    Inventors: Masayuki Hanakawa, Shin-ichi Minegishi
  • Publication number: 20090085249
    Abstract: In a first zone of a tenter section, damp air is applied to side edge portions of a TAC film, thereby providing the TAC film with a water content profile in which water content decreases from the side edge portions toward a center portion. This water content profile causes the TAC film to have a birefringence profile in which a birefringence decreases from the side edge portions toward the center portion. The TAC film is stretched in a width direction while the side edge portions are being held with clips. Due to a low flexibility at the side edge portions during the stretching process, the birefringence of the TAC film increases such that an increase in the birefringence becomes larger from the side edge portions toward the center portion. A difference of the birefringence in the width direction before the stretching process compensates a difference of the increase in the birefringence in the width direction after the stretching process. The water content of the TAC film is then evaporated.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 2, 2009
    Applicant: FUJIFILM Corporation
    Inventor: Toshinao Arai
  • Patent number: 7491357
    Abstract: In solution casting, dope containing a polymer and a solvent is cast on to a support to form a cast film. The cast film is stripped from the support to obtain a polymer film of cellulose ester, for example, cellulose acetate propionate (CAP). The polymer film is stretched. While the polymer film is stretched, tension of 80 N/m or more is applied thereto in a stretching direction. Polymer film surface temperature thereof is set equal to or more than a glass transition temperature Tg thereof. Furthermore, before stretching the polymer film, the polymer film stripped from the support is dried. After stretching the polymer film, the polymer film is dried. Also, the solution casting process is according to multi casting of plural dopes at one time together for plural cast films in the polymer film.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: February 17, 2009
    Assignee: FUJIFILM Corporation
    Inventor: Hidekazu Yamazaki
  • Publication number: 20090022775
    Abstract: The invention relates to polymer scaffolds suitable for producing artificial tissues, in particular polysaccharide scaffolds, to processes for their preparation, to their use for producing artificial tissues, and to artificial tissues produced on the basis of such polymer scaffolds.
    Type: Application
    Filed: January 24, 2007
    Publication date: January 22, 2009
    Applicant: BASF SE
    Inventors: Simon Champ, Matthias Maase, Sascha Deck
  • Publication number: 20080157435
    Abstract: A method for making a nano-scale film includes the steps of: (a) providing a suspension including an organic solvent and a number of nano-scale particles dispersed therein; (b) dropping/releasing the suspension into a liquid having a specific gravity greater than that of the nano-scale particles; and (c) forming a uniform film of nano-scale particles on the surface of the liquid.
    Type: Application
    Filed: November 2, 2007
    Publication date: July 3, 2008
    Applicants: Tsinghua University, HON HAI Precision Industry CO., LTD.
    Inventors: Li-Na Zhang, Yao-Jun Zhang, Yi Ren, Kai-Li Jiang, Qun-Qing Li, Shou-Shan Fan
  • Patent number: 6951398
    Abstract: The invention relates to a new type of reflective optical element made of a reflective metallic layer comprising reflecting nanoparticles deposited on a liquid surface. Metallic or non-metallic nanometer-sized particles are coated with a ligand. The coated particles are concentrated and deposited on the surface of a liquid where they self-assemble to give optical-quality high-reflectivity optical surfaces. Coating liquid surfaces with reflective layers allows one to make inexpensive and versatile high-quality mirrors. The surfaces of liquids can be shaped by a variety of techniques.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: October 4, 2005
    Assignee: Université Laval
    Inventors: Ermanno Borra, Anna Ritcey, Hélene Yockel-Lelièvre
  • Patent number: 6942830
    Abstract: A device and a process for producing three-dimensional objects is disclosed. The device has a container (1) for a medium (2) and a three-dimensionally positionable dispenser (4) for release of a material (3), the addition of which to the medium (2) leads to the formation of solid structures, into the medium (2). Addition of the material (3) by moving the dispenser in XYZ direction on a platform (8) below the filling height of the first material (2) in the container (1) leads to the formation of three-dimensional objects.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: September 13, 2005
    Assignee: Envisiontec GmbH
    Inventors: Rolf Mülhaupt, Rüdiger Landers, Hendrik John
  • Patent number: 6939489
    Abstract: A process for fabricating dental form pieces for dental restoration and replacement parts is provided and includes the step of applying a material, on a firm support or a fluid medium, by a three dimensional plotting technology in a layer by layer manner. The material has micro cords and/or micro drops which include at least one of a meltable, polymerizable, polycondensable, and polyaddable constituent element that is an unfilled monomer, a reinforced monomer, oligomer, polymer, or a ceramic element. The process also includes the step of hardening the applied material by cooling of the material, chemical reaction, polymerization with thermal handling, or polymerization by irradiation of the material with UV or visible light.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: September 6, 2005
    Assignee: Ivoclar Vivadent AG
    Inventors: Norbert Moszner, Armin Burgath, Rolf Mulhaupt, Ulrich Salz, Volker Rheinberger, Rudiger Landers
  • Patent number: 6887580
    Abstract: An adhesive polyimide resin which comprises a siloxane polyimide resin obtained from (A) an aromatic tetracarboxylic dianhydride and (B) a diamine ingredient comprising (B1) a diamine having a phenolic hydroxyl group, carboxyl group, or vinyl group as a crosslinkable reactive group and (B2) a siloxanediamine and has a glass transition temperature of 50 to 250?C and a Young's modulus (storage modulus) at 250?C of 105 Pa or higher; and a laminate which comprises a substrate comprising a conductor layer and an insulating supporting layer having at least one polyimide resin layer and, disposed on a surface of the substrate, an adhesive layer comprising a layer of the adhesive polyimide resin. The adhesive polyimide resin and the laminate have satisfactory adhesion strength even after exposure to a high temperature of up to 270?C and further have excellent heat resistance in reflow ovens. They are hence suitable for use in the bonding of electronic parts.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: May 3, 2005
    Assignee: Nippon Steel Chemical Co., Ltd.
    Inventors: Kiwamu Tokuhisa, Akira Tokumitsu, Kazuaki Kaneko
  • Patent number: 6881819
    Abstract: The invention relates to a liquid initiator for carrying out anionic lactam polymerization. The liquid initiator contains a conversion product of isocyanate (1) with a protic compound (P) and a base (B) in an aprotic solvation agent (S).
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: April 19, 2005
    Assignee: EMS-Chemie AG
    Inventors: Eduard Schmid, Ivano Laudonia
  • Publication number: 20040241472
    Abstract: The invention relates to a composite material comprising a material to be coated and a coating agent applied to the surface of the material to be coated to form a coating on it. According to the invention, the coating agent of the composite material is a polymer composite material formed from at least one polymer and a filler, which have been melt-mixed together in a desired mixture ratio and the melt mass thus formed has been extruded into a desired form, and the extruded polymer composite material has been thermally sprayed onto the material to be coated to form a coating on it.
    Type: Application
    Filed: July 22, 2004
    Publication date: December 2, 2004
    Inventor: Mika Kolari
  • Patent number: 6589663
    Abstract: The aromatic polyamide film of the present invention has microdomain structures having sizes of not less than 5 nm and not more than 600 nm. The film has an easily adhesive property and is suitable for use in printed circuit boards. In addition, it is preferable for use in magnetic recording media that the surface roughness Ra is not less than 0.25 nm and less than 25 nm and the planar orientation coefficient of the film is not less than 0.16 and not more than 0.60. And, in the production method of the present invention, the relation of a time T (minute) to the thickness t (mm) is limited to the expression; 1.2t (t+1)≦T, wherein a time T means the time of from the start of the coagulation process to the peeling of the coagulated film from the support and the thickness t means the thickness of the thin filmy product on the support just after cast. By the production method, the film having the above-mentioned characteristics can be produced in good productivity.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: July 8, 2003
    Assignee: Teijin Limited
    Inventors: Makoto Handa, Taro Oya
  • Patent number: 6533426
    Abstract: A method for fabricating an optical quality, free-standing, compliant parabolic membrane mirror using an inverted parabolic mandrel created by rotating a liquid confined to a cylindrical polymer and applying a reflective optical stress coating once the substrate has hardened. The stress coating applies a tensile force to the substrate that offsets the stress in the substrate that would otherwise decrease the convexity, and also generates a force to restore the membrane mirror to its original convex parabolic shape when the mirror is deformed by an external force.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: March 18, 2003
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Richard A. Carreras, Dan K. Marker, James M. Wilkes, Dennis Duneman, James R. Rotge
  • Patent number: 6436218
    Abstract: Films having a microreplicated topography are prepared from contacting a microembossed pattern to a layer of film. When an adhesion interface is established between the layer of film and a supporting substrate, the topography of the film surface controls the performance of the adhesion interface. Articles having microreplicated film surfaces are also disclosed that have an advantage of providing microchannels for fluid egress for an effective period of time. Multiple microembossed patterns produce microreplicated film surfaces having both microchannels for fluid egress and pegs for improved film properties.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: August 20, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Frank T. Sher, Francis V. Loncar, Jr.
  • Patent number: 6413630
    Abstract: A decorative film having an excellent decorative effect, excellent three-dimensional curvature emulating properties, three-dimensional curvature formability, long-term weather resistance and stain resistance. The decorative film comprises one or more transparent layers and a decorative metal layer. The transparent layer has an adhered side for being adhered to a substrate. The transparent layer comprises a copolymer of a tetrafluoroethylene, a hexafluoropropylene and a vinylidene fluoride. The decorative metal layer is on the adhered side of the transparent layer. A substrate can be bonded to the metal layer of the decorative film. The substrate can be a complex three-dimensional shaped substrate. The substrate can also be an injection molded substrate. An adhesive can be disposed on the metal layer of the decorative film, and the adhesive layer can be disposed between the metal layer and the substrate.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: July 2, 2002
    Assignee: 3M Innovative Properties Company
    Inventor: Akihiko Nakayama
  • Patent number: 6277318
    Abstract: A method for fabricating adherent, patterned carbon nanotube films is provided. According to the invention, a substrate is patterned with a carbide-forming material, a carbon-dissolving material, or a low melting point metal. Carbon nanotubes are then deposited onto the patterned substrate, but have relatively poor adhesion to either the substrate material or the patterned material. The substrate is then annealed, typically in vacuum, at a temperature dependent on the particular patterning material, e.g., a temperature at which carbide formation occurs, at which carbon dissolution occurs, or at which the low melting point metal melts. The annealing thereby provides an adherent nanotube film over the patterned areas, while the nanotubes deposited onto the non-patterned areas are easily removed, e.g., by blowing, rubbing, brushing and/or ultrasonication in a solvent such as methanol.
    Type: Grant
    Filed: August 18, 1999
    Date of Patent: August 21, 2001
    Assignees: Agere Systems Guardian Corp., University of North Carolina at Chapel Hill
    Inventors: Christopher Andrew Bower, Otto Zhou, Wei Zhu
  • Patent number: 5733663
    Abstract: To produce a composite membrane, the solution of a polymer in a volatile organic solvent is spread on water, the solvent is allowed to evaporate, the polymer is crosslinked and the polymer film formed is transferred to a porous support membrane. The polymer is preferably a polysiloxane which is cross-linked via polymer-bonded OH groups. The composite membrane is suitable, inter alia, for pervaporation.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: March 31, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ude Scheunemann, Olaf Althoff, Werner Hickel, Gunther Appel, Jacqueline Bauer, Gerhard Geiss
  • Patent number: 5595695
    Abstract: An elastomeric article having a matte finish is prepared by curing a hydrolyzable composition under conditions of elevated humidity, or by including short aramid fibers therein. Disclosed herein are particular processes for the preparation of matte finished silicone rubber articles in a continuous extrusion process.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: January 21, 1997
    Assignee: Sealex Inc.
    Inventor: Peter R. Hagen
  • Patent number: 5573721
    Abstract: A system is provided for producing a three dimensional object from a reactive liquid medium capable of being solidified. The object is constructed from many successive layers of the solidified reactive liquid medium when subjected to appropriate synergistic stimulation. A reservoir contains both the reactive liquid medium and an underlying supporting, substantially immiscible, non-reactive liquid medium. To begin forming the object, a platform within the reservoir is initially positioned at a depth equal to the thickness of a first layer to be solidified, and continues to support the object being constructed. The synergistic source radiates toward the reactive liquid medium and imaging apparatus defining a three dimensional object of required configuration selectively controls the size and shape of that part of a new two dimensional layer to be solidified. At least part of the new layer is solidified, after which a further layer is applied.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: November 12, 1996
    Assignee: Hercules Incorporated
    Inventor: Paul C. Gillette
  • Patent number: 5478425
    Abstract: The invention is related to electronic and more specifically to photo-electronic devices manufactured by means of thin film layering techniques. The invention proposes the use of polymer, copolymer, polyamide and similar organic casting materials, in layers 500 to 10,000 angstroms thick, as protective barriers between layers where the processing of one layer would be adversely affected by or would damage an adjacent previously formed layer.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: December 26, 1995
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Elizabeth H. Nelson
  • Patent number: 5344597
    Abstract: A method and apparatus for forming sheets of a first material, such as a metal, plastic, rubber, or the like, having a primary tank for heating a second molten material and containing the second molten material to form a surface upon which the first material is floated in a molten state. The temperature of the second molten material is maintained below the melting temperature of the first molten material, and the second molten material has a higher specific gravity than the first molten material. Thus, the first molten material floats upon the surface of the second molten material while it solidifies into a sheet of material, which is then withdrawn from the surface of the second molten material. A hood is disposed over the primary tank to remove fumes and vapors which, when removed, are discharged into water where they condense.
    Type: Grant
    Filed: May 4, 1993
    Date of Patent: September 6, 1994
    Inventor: Harry J. Robertson
  • Patent number: 5264165
    Abstract: A hydrophilic polytetramethylene adipamide microporous membrane has a narrow pore-size distribution. The membrane is formed by a rapid quench process in a quench bath having solubility parameter above about 21 Hildebrands.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: November 23, 1993
    Assignee: Cuno, Incorporated
    Inventor: Rodney A. Knight
  • Patent number: 5260004
    Abstract: Langmuir-Blodgett films having photo-electronic properties and methods of making the same. The instant films may be made, for example, by spreading a mixture of one or more types of biotinylated lipids and one or more types of electrically-conductive lipids over a water-miscible liquid subphase. Conjugated molecules comprising a biotin-binding component made up of an avidin or streptavidin molecule or a fragment or derivative thereof having biotin-binding activity and a photodynamic proteinaceous component are then injected into the subphase. Because of the affinity between biotin and the biotin-binding component, the conjugated molecules bind to the biotinylated lipids. The air-subphase interface is then compressed, causing the biotinylated lipids and electrically-conductive lipids to form a monolayer thereat.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: November 9, 1993
    Assignees: The United States of America as represented by the Secretary of the Army, University of Massachusetts Lowell
    Inventors: Lynne A. Samuelson, David L. Kaplan, Kenneth A. Marx, Sukant K. Tripathy, Jayant Kumar
  • Patent number: 5217670
    Abstract: Movable barriers as well as auxiliary movable barriers are provided in a trough filled with a liquid forming a monomolecular film thereon. The barriers are driven with a constant positional relationship maintained therebetween to prevent disturbances from occurring in the flow of the monomolecular film. Thus, the monomolecular film is transferred to a substrate with a uniform molecular density. The substrate preferably has a width equal to the length of the movable barriers and the distance between the auxiliary movable barriers.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: June 8, 1993
    Assignee: Shingitjyutsu Kaihatsu Jigyoudan
    Inventors: Seizou Miyata, Hideo Kumehara