Patents by Inventor Yuichi Kuroki
Yuichi Kuroki 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: 10391689Abstract: The invention provides a method for manufacturing a substrate-integrated gasket, the method integrating a fiber substrate which is constructed by a pulp fiber having cellulose as a main component and a gasket body which is constructed by a rubber-like elastic body according to a rubber impregnation, wherein a plurality of substrate-integrated gaskets are obtained by executing an injection molding by plural stages of rubber metal molds. Further, the rubber material is filled in plural stages of metal mold cavities by passing the rubber material through the fiber substrate in which a rubber material flow channel in the metal mold is closed at its injection pressure. The invention can reduce a man hour for removing burr and cleaning a metal mold by suppressing generation of rubber burr at the molding time and can reduce an amount of disposal of a molding material, thereby achieving a good manufacturing efficiency.Type: GrantFiled: April 7, 2014Date of Patent: August 27, 2019Assignee: NOK CorporationInventors: Shotaro Koga, Yuichi Kuroki
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Publication number: 20160052182Abstract: The invention provides a method for manufacturing a substrate-integrated gasket, the method integrating a fiber substrate which is constructed by a pulp fiber having cellulose as a main component and a gasket body which is constructed by a rubber-like elastic body according to a rubber impregnation, wherein a plurality of substrate-integrated gaskets are obtained by executing an injection molding by plural stages of rubber metal molds. Further, the rubber material is filled in plural stages of metal mold cavities by passing the rubber material through the fiber substrate in which a rubber material flow channel in the metal mold is closed at its injection pressure. The invention can reduce a man hour for removing burr and cleaning a metal mold by suppressing generation of rubber burr at the molding time and can reduce an amount of disposal of a molding material, thereby achieving a good manufacturing efficiency.Type: ApplicationFiled: April 7, 2014Publication date: February 25, 2016Inventors: Shotaro KOGA, Yuichi KUROKI
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Patent number: 8791036Abstract: The present invention relates to a glass plate for a substrate contains, as a glass matrix composition, in mol % on the oxide basis, SiO2: 67 to 72, Al2O3: 1 to 7, B2O3: 0 to 4, MgO: 11 to 15, CaO: 0 to 3, SrO: 0 to 3, BaO: 0 to 4, ZrO2: 0 to 4, Na2O: 8 to 15, and K2O: 0 to 7, with SiO2+Al2O3: 71 to 77, MgO+CaO+SrO+BaO: 11 to 17, Na2O+K2O: 8 to 17, and satisfying K2O/(Na2O+K2O)?0.13×(SiO2+Al2O3+0.5B2O3+0.3BaO)?9.4, in which the glass plate has a ?-OH value (mm?1) of 0.05 to 0.5, and a heat shrinkage ratio (C) of 16 ppm or less.Type: GrantFiled: March 30, 2012Date of Patent: July 29, 2014Assignee: Asahi Glass Company, LimitedInventors: Tomoyuki Tsujimura, Yuichi Kuroki, Manabu Nishizawa
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Patent number: 8604693Abstract: To provide a plasma display device whereby it is possible to improve the image quality and at the same time to reduce warpage of a thin cover glass plate having a large area. A plasma display device 10 is provided which comprises a plasma display panel 20 provided with glass substrates 21, 22, and a cover glass plate 30 bonded to the display side of the plasma display panel 20, wherein the cover glass plate 30 has a diagonal length of at least 81 cm and a thickness of at most 1.5 mm, and the average thermal expansion coefficient of the cover glass plate 30 is from 80 to 120% of the average thermal expansion coefficient of the glass substrates 21, 22 within a range of from 50 to 350° C.Type: GrantFiled: December 7, 2012Date of Patent: December 10, 2013Assignee: Asahi Glass Company, LimitedInventors: Kazutaka Ono, Shusaku Akiba, Yuichi Kuroki
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Publication number: 20130302617Abstract: To provide glass to be used for chemically tempered glass which is hardly broken even when flawed. Glass for chemical tempering, which comprises, as represented by mole percentage based on the following oxides, from 65 to 85% of SiO2, from 3 to 15% of Al2O3, from 5 to 15% of Na2O, from 0 and less than 2% of K2O, from 0 to 15% of MgO and from 0 to 1% of ZrO2, and has a total content Si02+Al2O3 of SiO2 and Al2O3 of at most 88%.Type: ApplicationFiled: July 16, 2013Publication date: November 14, 2013Applicant: Asahi Glass Company, LimitedInventors: Shusaku Akiba, Kazutaka Ono, Jun Endo, Shigeki Sawamura, Tetsuya Nakashima, Yuichi Kuroki
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Patent number: 8518545Abstract: To provide glass to be used for chemically tempered glass which is hardly broken even when flawed. Glass for chemical tempering, which comprises, as represented by mole percentage based on the following oxides, from 65 to 85% of SiO2, from 3 to 15% of Al2O3, from 5 to 15% of Na2O, from 0 and less than 2% of K2O, from 0 to 15% of MgO and from 0 to 1% of ZrO2, and has a total content SiO2+Al2O3 of SiO2 and Al2O3 of at most 88%.Type: GrantFiled: September 14, 2012Date of Patent: August 27, 2013Assignee: Asahi Glass Company, LimitedInventors: Shusaku Akiba, Kazutaka Ono, Jun Endo, Shigeki Sawamura, Tetsuya Nakashima, Yuichi Kuroki
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Patent number: 8455375Abstract: To provide a glass plate for display panels which has a low 82O3 content and a low compaction and which can be used as a glass substrate for large TFT panels. A glass plate for display panels, which comprises, as a glass matrix composition as represented by mass % based on oxide: SiO2 50.0 to 73.0, Al2O3 6.0 to 20.0, B2O3 0 to 2.0, MgO 4.2 to 9.0, CaO 0 to 6.0, SrO 0 to 2.0, BaO 0 to 2.0, MgO+CaO+SrO+BaO 6.5 to 11.3, Li2O 0 to 2.0, Na2O 2.0 to 18.0, K2O 0 to 13.0, and Li2O+Na2O+K2O 8.0 to 18.0, and has a heat shrinkage (C) of at most 20 ppm.Type: GrantFiled: September 16, 2010Date of Patent: June 4, 2013Assignee: Asahi Glass Company, LimitedInventors: Manabu Nishizawa, Yuya Shimada, Yuichi Kuroki, Kei Maeda
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Patent number: 8431503Abstract: The present invention provides an alkali-free glass having a high strain point, a low viscosity and low devitrification, which is easily subjected to float molding and fusion molding. The glass herein has a strain point of 725° C. or higher, an average thermal expansion coefficient at 50 to 300° C. of 30×10?7 to 40×10?7/° C., a temperature T2 at which a glass viscosity becomes 102 dPa·s of 1,710° C. or lower, a temperature T4 at which a glass viscosity becomes 104 dPa·s of 1,330° C. or lower, a glass surface devitrification temperature (Tc) of 1,330° C. or lower, and a glass internal devitrification temperature (Td) of 1,330° C. or lower.Type: GrantFiled: January 3, 2012Date of Patent: April 30, 2013Assignee: Asahi Glass Company, LimitedInventors: Kensuke Nagai, Yuichi Kuroki, Manabu Nishizawa, Tomoyuki Tsujimura
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Publication number: 20130011650Abstract: To provide glass to be used for chemically tempered glass which is hardly broken even when flawed. Glass for chemical tempering, which comprises, as represented by mole percentage based on the following oxides, from 65 to 85% of SiO2, from 3 to 15% of Al2O3, from 5 to 15% of Na2O, from 0 and less than 2% of K2O, from 0 to 15% of MgO and from 0 to 1% of ZrO2, and has a total content SiO2+Al2O3 of SiO2 and Al2O3 of at most 88%.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Asahi Glass Company, LimitedInventors: Shusaku Akiba, Kazutaka Ono, Jun Endo, Shigeki Sawamura, Tetsuya Nakashima, Yuichi Kuroki
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Patent number: 8324124Abstract: A process for producing a glass substrate, which includes forming molten glass obtained by melting raw materials into a glass ribbon in a float bath, annealing the glass ribbon by a cooling apparatus, and cutting the glass ribbon to form the glass substrate, where the hydrogen concentration in the atmosphere of a float bath exceeds 3%, and the glass retention time in the float bath is from 4 to 15 minutes.Type: GrantFiled: June 20, 2011Date of Patent: December 4, 2012Assignee: Asahi Glass Company, LimitedInventors: Kensuke Nagai, Yuichi Kuroki, Kei Maeda
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Publication number: 20120208309Abstract: The present invention relates to a glass plate for a substrate contains, as a glass matrix composition, in mol % on the oxide basis, SiO2: 67 to 72, Al2O3: 1 to 7, B2O3: 0 to 4, MgO: 11 to 15, CaO: 0 to 3, SrO: 0 to 3, BaO: 0 to 4, ZrO2: 0 to 4, Na2O: 8 to 15, and K2O: 0 to 7, with SiO2+Al2O3: 71 to 77, MgO+CaO+SrO+BaO: 11 to 17, Na2O+K2O: 8 to 17, and satisfying K2O/(Na2O+K2O)?0.13×(SiO2+Al2O3+0.5B2O3+0.3BaO)?9.4, in which the glass plate has a ?-OH value (mm?1) of 0.05 to 0.5, and a heat shrinkage ratio (C) of 16 ppm or less.Type: ApplicationFiled: March 30, 2012Publication date: August 16, 2012Applicant: Asahi Glass Company, LimitedInventors: Tomoyuki TSUJIMURA, Yuichi Kuroki, Manabu Nishizawa
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Publication number: 20120199203Abstract: Provided are a glass sheet for a CIGS solar cell which satisfies both of high power generation efficiency and high glass transition temperature, and a CIGS solar cell having high power generation efficiency. A glass sheet for a Cu—In—Ga—Se solar cell containing, in terms of mol % on the basis of the following oxides, 60 to 75% of SiO2, 3 to 10% of Al2O3, 0 to 3% of B2O3, 5 to 18% of MgO, 0 to 5% of CaO, 4 to 18.5% of Na2O, 0 to 17% of K2O, and 0% or more and less than 10% of SrO+BaO+ZrO2, wherein K2O/(Na2O+K2O) is 0 to 0.5, and the glass sheet has a glass transition temperature (Tg) of more than 550° C.Type: ApplicationFiled: April 18, 2012Publication date: August 9, 2012Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Manabu Nishizawa, Yuichi Kuroki, Tatsuo Nagashima, Yasushi Kawamoto, Shigeru Niki, Shogo Ishizuka
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Publication number: 20120149544Abstract: The present invention provides an alkali-free glass having a high strain point, a low viscosity and low devitrification, which is easily subjected to float molding and fusion molding. The glass herein has a strain point of 725° C. or higher, an average thermal expansion coefficient at 50 to 300° C. of 30×10?7 to 40×10?7/° C., a temperature T2 at which a glass viscosity becomes 102 dPa·s of 1,710° C. or lower, a temperature T4 at which a glass viscosity becomes 104 dPa·s of 1,330° C. or lower, a glass surface devitrification temperature (Tc) of 1,330° C. or lower, and a glass internal devitrification temperature (Td) of 1,330° C. or lower.Type: ApplicationFiled: January 3, 2012Publication date: June 14, 2012Applicant: Asahi Glass Company, LimitedInventors: Kensuke NAGAI, Yuichi Kuroki, Manabu Nishizawa, Tomoyuki Tsujimura
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Publication number: 20110265863Abstract: The present invention provides a solar cell having high photovoltaical conversion efficiency and being excellent in the light transmissivity and weather resistance such as solarization resistance. The present invention relates to a solar cell comprising a double tube composed of two glass tubes differing in the diameter and a photovoltaic conversion layer formed between the two glass tubes, the double tube being sealed at both ends of a part in which the photovoltaic conversion layer is formed, wherein at least one of the two glass tubes is composed of a glass comprising, in mass % based on the oxides, from 60 to 75% of SiO2, from 4 to 10% of Al2O3, from 0 to 5% of B2O3, from 0 to 5% of MgO, from 0.5 to 5% of CaO, from 0 to 0.5% of SrO, from 0 to 11% of BaO, from 10 to 16% of Na2O, from 0 to 10% of K2O, and from 0.5 to 10% of ZrO2.Type: ApplicationFiled: April 27, 2011Publication date: November 3, 2011Applicant: Asahi Glass Company, LimitedInventors: Tatsuo NAGASHIMA, Toshinari Watanabe, Yuichi Kuroki
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Publication number: 20110251044Abstract: To provide a glass substrate which has a high glass transition temperature, which has a thermal expansion coefficient close to that of soda lime glass, which has a low specific gravity, which will hardly undergo yellowing, and which further has good melting characters and is thereby produced with high productivity. A glass substrate which has a composition comprising, as represented by mass percentage based on oxides, SiO2 ??55 to 65%, Al2 O3 ??4 to 8%, MgO ??6 to 9%, CaO ?0.1 to 5%, SrO ?0.5 to 6%, BaO ??0 to 2%, MgO + CaO + SrO + BaO ?6.6 to 19%, Na2 O ??0 to 5%, K2 O ?9.5 to 21%, Na2 O + K2 O ??10 to 22%, ZrO2 ?0.5 to 5%, Fe2 O3 0.06 to 0.15%, which has a specific gravity of at most 2.7, which has an average thermal expansion coefficient from 50 to 350° C. of from 80×10?7/° C. to 90×107/° C., which has a glass transition temperature of at least 640° C.Type: ApplicationFiled: June 20, 2011Publication date: October 13, 2011Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Kensuke NAGAI, Yuichi Kuroki, Kei Maeda
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Publication number: 20110203645Abstract: The present invention relates to a solar cell comprising a double tube composed of two glass tubes differing in the diameter and a photovoltaic conversion layer formed between the two glass tubes, the double tube being sealed at both ends of a part in which the photovoltaic conversion layer is formed, wherein at least one of the two glass tubes is composed of a glass comprising, in mass % based on the oxides, from 60 to 70% of SiO2, from 4 to 10% of Al2O3, from 0 to 3% of B2O3, from 0 to 4% of MgO, from 2 to 9% of CaO, from 1 to 10% of SrO, from 0 to 2% of BaO, from 10 to 16% of Na2O, from 0 to 5% of K2O, from 0 to 2% of ZrO2 and from 0 to 2% of CeO2.Type: ApplicationFiled: April 29, 2011Publication date: August 25, 2011Applicant: Asahi Glass Company, LimitedInventors: Yuichi KUROKI, Makoto SHIRATORI, Toshinari WATANABE, Kei MAEDA
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Publication number: 20110136037Abstract: In order to prevent an electrolyte membrane from being broken, and make an assembling steps of a cell easy, in a fuel cell provided with a membrane electrode complex in which catalyst layers are respectively arranged on both surfaces of a electrolyte membrane, first and second gas diffusion layers which are arranged on both surfaces of the electrode complex, separators for respectively supplying reaction gas to the first and second gas diffusion layers, and a gasket for sealing the reaction gas, the gasket is formed on a surface of the gas diffusion layer so as to oppose to the separator, at least the gasket forming portion of the gas diffusion layer has a lower void content than the portion in contact with the catalyst layer, and the gasket arranged in the first and second gas diffusion layers is integrally formed at least via a through hole passing through the first and second gas diffusion layers.Type: ApplicationFiled: October 13, 2010Publication date: June 9, 2011Inventors: Yuichi Kuroki, Yoshihiro Kurano, Tomohiro Inoue, Atsushi Oma, Yasuji Ogami, Kazuo Saito
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Publication number: 20110003483Abstract: To provide a glass plate for display panels which has a low 8203 content and a low compaction and which can be used as a glass substrate for large TFT panels. A glass plate for display panels, which comprises, as a glass matrix composition as represented by mass% based on oxide: SiO2 50.0 to 73.0, Al2O3 6.0 to 20.0, B2O3 0 to 2.0, MgO 4.2 to 9.0, CaO 0 to 6.0, SrO 0 to 2.0, BaO 0 to 2.0, MgO+CaO+SrO+BaO 6.5 to 11.3, Li2O 0 to 2.0, Na2O 2.0 to 18.0, K2O 0 to 13.0, and Li2O +Na2O+K2O 8.0 to 18.0, and has a heat shrinkage (C) of at most 20 ppm.Type: ApplicationFiled: September 16, 2010Publication date: January 6, 2011Applicant: Asahi Glass Company, LimitedInventors: Manabu NISHIZAWA, Yuya Shimada, Yuichi Kuroki, Kei Maeda
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Patent number: 7829238Abstract: In order to prevent an electrolyte membrane from being broken, and make an assembling steps of a cell easy, in a fuel cell provided with a membrane electrode complex in which catalyst layers are respectively arranged on both surfaces of a electrolyte membrane, first and second gas diffusion layers which are arranged on both surfaces of the electrode complex, separators for respectively supplying reaction gas to the first and second gas diffusion layers, and a gasket for sealing the reaction gas, the gasket is formed on a surface of the gas diffusion layer so as to oppose to the separator, at least the gasket forming portion of the gas diffusion layer has a lower void content than the portion in contact with the catalyst layer, and the gasket arranged in the first and second gas diffusion layers is integrally formed at least via a through hole passing through the first and second gas diffusion layers.Type: GrantFiled: April 13, 2007Date of Patent: November 9, 2010Assignees: Nok Corporation, Kabushiki Kaisha ToshibaInventors: Yuichi Kuroki, Yoshihiro Kurano, Tomohiro Inoue, Atsushi Oma, Yasuji Ogami, Kazuo Saito
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Patent number: 7799484Abstract: In order to provide a gasket which has a good handling property as a gasket used for a fuel battery or a gasket for an HDD, can be easily integrated with the other end mounting member even in the case that the other end mounting member such as a separator or the like is a material having low strength or a thin plate, and has good mounting workability, a gasket is having a sheet-shaped gasket mounting member provided with a sticking function on one face, and a gasket main body made of a rubber-type elastic member integrated with the sheet-shaped gasket mounting member, and the gasket is mounted to the other end mounting member on the basis of the sticking function of the sheet-shaped gasket mounting member.Type: GrantFiled: March 14, 2007Date of Patent: September 21, 2010Assignee: NOK CorporationInventors: Yuichi Kuroki, Kazuhisa Senda, Yoshihiro Kurano, Tomohiro Inoue