Patents by Inventor Hirofumi Nishibayashi
Hirofumi Nishibayashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8173727Abstract: The present invention provides a crosslinkable elastomer composition, in which generation of HF under high temperature conditions is reduced, the decrease in weight to both NF3 plasma treatment and O3 treatment in the semiconductor manufacturing process is small and generation of foreign substances (particles) in these treatments is suppressed significantly. Specifically, the present invention relates to a crosslinkable elastomer composition comprising a crosslinkable elastomer and a filler having a specific surface area of at least 0.5 m2/g and containing a synthetic polymer having a thermally and chemically stable aromatic ring in the main chain, a crosslinkable elastomer composition comprising a crosslinkable elastomer and nonoxide ceramics and a crosslinkable elastomer composition wherein the decrease in weight by NF3 plasma irradiation is at most 0.20%.Type: GrantFiled: November 3, 2008Date of Patent: May 8, 2012Assignee: Daikin Industries, Ltd.Inventors: Hirofumi Nishibayashi, Takafumi Yamato, Katsuhiko Higashino, Hiroyuki Tanaka, Tsuyoshi Noguchi
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Patent number: 8071709Abstract: The present invention provides a novel fluorine-containing rubber composite material having both of excellent fuel impermeability and excellent cold resistance, a fuel impermeable sealing material comprising the composite material and a process for preparing the composite material. The fluorine-containing rubber composite material comprises crosslinked particles of fluorine-containing silicone rubber dispersed in a fluorine-containing rubber. It is preferable that the fluorine-containing rubber comprises a vinylidene fluoride/tetrafluoroethylene/perfluoro vinyl ether copolymer, and the composite material has cold resistance of not more than ?35° C. and fuel permeability of not more than 500 g·mm/m2·day. The fuel impermeable sealing material comprises the composite material. The process for preparing the composite material comprises a step for co-coagulation of a fluorine-containing rubber emulsion and an emulsion of crosslinked fluorine-containing silicone rubber.Type: GrantFiled: March 14, 2007Date of Patent: December 6, 2011Assignees: Daikin Industries, Ltd., Dow Corning CorporationInventors: Mitsuru Kishine, Hirofumi Nishibayashi, Toshiki Ichisaka, Kazuo Kobayashi, Ryuji Tachibana, Tadashi Okawa, Katsumi Kihara
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Publication number: 20090076224Abstract: The present invention provides a novel fluorine-containing rubber composite material having both of excellent fuel impermeability and excellent cold resistance, a fuel impermeable sealing material comprising the composite material and a process for preparing the composite material. The fluorine-containing rubber composite material comprises crosslinked particles of fluorine-containing silicone rubber dispersed in a fluorine-containing rubber. It is preferable that the fluorine-containing rubber comprises a vinylidene fluoride/tetrafluoroethylene/perfluoro vinyl ether copolymer, and the composite material has cold resistance of not more than ?35° C. and fuel permeability of not more than 500 g·mm/m2·day. The fuel impermeable sealing material comprises the composite material. The process for preparing the composite material comprises a step for co-coagulation of a fluorine-containing rubber emulsion and an emulsion of crosslinked fluorine-containing silicone rubber.Type: ApplicationFiled: March 14, 2007Publication date: March 19, 2009Applicants: DAIKIN INDUSTRIES, LTD., DOW CORNING CORPORATIONInventors: Mitsuru Kishine, Hirofumi Nishibayashi, Toshiki Ichisaka, Kazuo Kobayashi, Ryuji Tachibana, Tadashi Okawa, Katsumi Kihara
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Publication number: 20090076197Abstract: The present invention provides a crosslinkable elastomer composition, in which generation of HF under high temperature conditions is reduced, the decrease in weight to both NF3 plasma treatment and O3 treatment in the semiconductor manufacturing process is small and generation of foreign substances (particles) in these treatments is suppressed significantly. Specifically, the present invention relates to a crosslinkable elastomer composition comprising a crosslinkable elastomer and a filler having a specific surface area of at least 0.5 m2/g and containing a synthetic polymer having a thermally and chemically stable aromatic ring in the main chain, a crosslinkable elastomer composition comprising a crosslinkable elastomer and nonoxide ceramics and a crosslinkable elastomer composition wherein the decrease in weight by NF3 plasma irradiation is at most 0.20%.Type: ApplicationFiled: November 3, 2008Publication date: March 19, 2009Applicant: DAIKIN INDUSTRIES, LTDInventors: Hirofumi Nishibayashi, Takafumi Yamato, Katsuhiko Higashino, Hiroyuki Tanaka, Tsuyoshi Noguchi
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Patent number: 7495046Abstract: The present invention provides a crosslinkable elastomer composition, in which generation of HF under high temperature conditions is reduced, the decrease in weight to both NF3 plasma treatment and O3 treatment in the semiconductor manufacturing process is small and generation of foreign substances (particles) in these treatments is suppressed significantly. Specifically, the present invention relates to a crosslinkable elastomer composition comprising a crosslinkable elastomer and a filler having a specific surface area of at least 0.5 m2/g and containing a synthetic polymer having a thermally and chemically stable aromatic ring in the main chain, a crosslinkable elastomer composition comprising a crosslinkable elastomer and nonoxide ceramics and a crosslinkable elastomer composition wherein the decrease in weight by NF3 plasma irradiation is at most 0.20%.Type: GrantFiled: December 13, 2002Date of Patent: February 24, 2009Assignee: Daikin Industries, Ltd.Inventors: Hirofumi Nishibayashi, Takafumi Yamato, Katsuhiko Higashino, Hiroyuki Tanaka, Tsuyoshi Noguchi
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Patent number: 6884847Abstract: A transparent elastomer composition is obtained by co-coagulation of an emulsion of fluorine-containing resin fine particles having an average particle size of from 20 to 150 nm and an emulsion of elastomer particles, in which the fluorine-containing resin fine particles are finely dispersed uniformly in the elastomer. The transparent elastomer composition provides an elastomeric molded article having excellent mechanical strength, abrasion resistance and transparency.Type: GrantFiled: January 16, 2004Date of Patent: April 26, 2005Assignee: Daikin Industries, Ltd.Inventors: Sadashige Irie, Kazuyoshi Mimura, Hirofumi Nishibayashi, Hiroyuki Tanaka, Tsuyoshi Noguchi, Mitsuru Kishine
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Publication number: 20050070637Abstract: The present invention provides a crosslinkable elastomer composition, in which generation of HF under high temperature conditions is reduced, the decrease in weight to both NF3 plasma treatment and O3 treatment in the semiconductor manufacturing process is small and generation of foreign substances (particles) in these treatments is suppressed significantly. Specifically, the present invention relates to a crosslinkable elastomer composition comprising a crosslinkable elastomer and a filler having a specific surface area of at least 0.5 m2/g and containing a synthetic polymer having a thermally and chemically stable aromatic ring in the main chain, a crosslinkable elastomer composition comprising a crosslinkable elastomer and nonoxide ceramics and a crosslinkable elastomer composition wherein the decrease in weight by NF3 plasma irradiation is at most 0.20%.Type: ApplicationFiled: December 13, 2002Publication date: March 31, 2005Inventors: Hirofumi Nishibayashi, Takafumi Yamato, Katsuhiko Higashino, Hiroyuki Tanaka, Tsuyoshi Noguchi
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Publication number: 20050020748Abstract: The present invention provides a fluorine-containing elastomer molded article, which is capable of withstanding use in high temperatures of 275° C. or higher and has resistance to high density plasma. Specifically, the present invention provides a fluorine-containing elastomer molded article obtained by crosslinking with a heat resistant crosslinking agent a crosslinkable fluorine-containing elastomer composition comprising an inorganic filler having a average primary particle size of at most 0.5 ?m, such as ?-type aluminum oxide and aluminum nitride, and a fluorine-containing elastomer component having a CN group or a COOH group, such as a perfluoro elastomer.Type: ApplicationFiled: December 13, 2002Publication date: January 27, 2005Inventors: Tatsuya Morikawa, Hirofumi Nishibayashi, Katsuhiko Higashino, Shintaro Ogata, Kazuyoshi Kawasaki, Mitsuru Kishine
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Publication number: 20040147676Abstract: A transparent elastomer composition is obtained by co-coagulation of an emulsion of fluorine-containing resin fine particles having an average particle size of from 20 to 150 nm and an emulsion of elastomer particles, in which the fluorine-containing resin fine particles are finely dispersed uniformly in the elastomer. The transparent elastomer composition provides an elastomeric molded article having excellent mechanical strength, abrasion resistance and transparency.Type: ApplicationFiled: January 16, 2004Publication date: July 29, 2004Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Sadashige Irie, Kazuyoshi Mimura, Hirofumi Nishibayashi, Hiroyuki Tanaka, Tsuyoshi Noguchi, Mitsuru Kishine
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Patent number: 6756445Abstract: A transparent elastomer composition is obtained by co-coagulation of an emulsion of fluorine-containing resin fine particles having an average particle size of from 20 to 150 nm and an emulsion of elastomer particles, in which the fluorine-containing resin fine particles are finely dispersed uniformly in the elastomer. The transparent elastomer composition provides an elastomeric molded article having excellent mechanical strength, abrasion resistance and transparency.Type: GrantFiled: March 29, 2002Date of Patent: June 29, 2004Assignee: Daikin Industries, Ltd.Inventors: Sadashige Irie, Kazuyoshi Mimura, Hirofumi Nishibayashi, Hiroyuki Tanaka, Tsuyoshi Noguchi, Mitsuru Kishine
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Patent number: 6440511Abstract: In a thermoplastic resin laminate having at least three thermoplastic resin layers, wherein an intermediate layer interposed between a first layer of a thermoplastic resin A1 and a second layer of a thermoplastic resin B1, which are not bonded each other, is a thermoplastic resin composition which contains as a main component a thermoplastic resin A2 having a bonding property to the thermoplastic resin A1 and a thermoplastic resin B2 having a bonding property to the thermoplastic resin B1 and forms a dispersion structure, wherein the thermoplastic resin A2 forms a continuous phase and the thermoplastic resin B2 forms a dispersed phase in the intermediate layer at the vicinity of the interface between the intermediate layer and the first layer, and wherein the thermoplastic resin B2 forms the continuous phase and the thermoplastic resin A2 forms the dispersed phase in the intermediate layer at the vicinity of the interface between the intermediate layer and the second layer, the first layer and the second layeType: GrantFiled: September 17, 1997Date of Patent: August 27, 2002Assignee: Daikin Industries, Ltd.Inventors: Tetsuo Shimizu, Hirofumi Nishibayashi, Takeshi Inaba, Yoshihisa Yamamoto, Takafumi Yamato, Masakatsu Kitano
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Patent number: 5234739Abstract: A polytetrafluoroethylene porous film, which is prepared by stretching a semisintered polytetrafluoroethylene material and heating the stretched material at a temperature higher than the melting point of sintered polytetrafluoroethylene, has an area ratio of fibrils to nodes of from 99:1 to 75:25, an average fibril diameter of from 0.05 to 0.2 .mu.m, a largest node area of not larger than 2 .mu.m.sup.2 and an average pore size of from 0.2 to 0.5 .mu.m and achieves low pressure loss.Type: GrantFiled: July 22, 1992Date of Patent: August 10, 1993Assignee: Daikin Industries Ltd.Inventors: Shinji Tanaru, Osamu Tanaka, Hirofumi Nishibayashi, Osamu Inoue, Katsutoshi Yamamoto, Toshio Kusumi
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Patent number: 5225131Abstract: A process for producing a multilayer polytetrafluoroethylene porous membrane is disclosed, which process comprises at least two layers having different average pore diameters, the process comprising the steps of: filling the inside of a cylinder of an extruding mold distinctively with at least two kinds of polytetrafluoroethylene fine powders with each of which a liquid lubricant has been mixed; paste-extruding the powders to obtain a multilayer extrudate, which is then optionally rolled; removing the liquid lubricant from the multilayer extrudate or the rolled multilayer extrudate to obtain an unsintered multilayer structure; subsequently heating the unsintered multilayer structure at a temperature not lower than the melting point of sintered polytetrafluoroethylene to obtain a semisintered multilayer structure; and then stretching the semisintered multilayer structure at least monoaxially.Type: GrantFiled: June 5, 1992Date of Patent: July 6, 1993Assignee: Daikin Industries, Ltd.Inventors: Shinji Tamaru, Katsutoshi Yamamoto, Osamu Tanaka, Hirofumi Nishibayashi, Osamu Inoue
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Patent number: 5217666Abstract: A porous PTFE film having a thin thickness and good permeability is produced by coating an emulsion of polytetrafluoroethylene on a substrate surface, in particular, a porous polytetrafluoroethylene substrate which has not been heated at a melting point of unsintered polytetrafluoroethylene or higher, heating the coated substrate at a temperature not lower than a melting point of sintered polytetrafluoroethylene to semi-sinter polytetrafluoroethylene, optionally removing the semi-sintered polytetrafluoroethylene film from the substrate, and then stretching the semi-sintered film at least in one direction.Type: GrantFiled: May 28, 1992Date of Patent: June 8, 1993Assignee: Daikin Industries Ltd.Inventors: Shinji Tamaru, Hirofumi Nishibayashi, Katsutoshi Yamamoto, Osamu Tanaka, Osamu Inoue
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Patent number: 5064593Abstract: A process for producing a multilayer polytetrafluoroethylene porous membrane comprising at least two layers having different average pore diameters is disclosed, the process comprising the steps of: filling the inside of a cylinder of an extruding mold distinctively with at least two kinds of polytetrafluoroethylene fine powders with each of which a liquid lubricant has been mixed; subsequently paste-extruding the powders to obtain a multilayer extrudate, which is then optionally rolled; and then stretching the extrudate or the rolled extrudate at least monoaxially after the liquid lubricant is removed therefrom or without removing the liquid lubricant.Type: GrantFiled: December 6, 1990Date of Patent: November 12, 1991Assignee: Daikin Industries Ltd.Inventors: Shinji Tamaru, Katsutoshi Yamamoto, Osamu Tanaka, Hirofumi Nishibayashi, Osamu Inoue
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Patent number: 4997708Abstract: A novel metal/polymer base functionally gradient material comprising silver and a fluororesin in which the composition of silver and the fluororesin is continuously changed from one side to the other.Type: GrantFiled: March 3, 1989Date of Patent: March 5, 1991Assignees: Science and Technology Agency, Daikin Industries Ltd.Inventors: Shogi Kawachi, Hirofumi Nishibayashi, Tohru Hirano, Junichi Teraki, Masayuki Niino