Patents by Inventor Hiroaki Tetsuka
Hiroaki Tetsuka 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: 8999043Abstract: As a permeable membrane of an air conditioning system that performs as supply to a space to be air conditioned through the permeable membrane and/or gas discharge from the space to be air conditioned through the permeable membrane, an asymmetric membrane is used. The asymmetric membrane is made of a cyclic olefin addition polymer obtained by addition polymerization of a cyclic olefin functionality siloxane, or by addition polymerization of the cyclic olefin functionality siloxane and a cyclic olefin compound, and in which a rate of a structural unit derived from the cyclic olefin functionality siloxane is 5 to 100 mol % of the addition polymer, and a number average molecular weight (Mn) is 10,000 to 2,000,000 in terms of polystyrene conversion measured by a GPC using tetrahydrofuran as a solvent.Type: GrantFiled: August 1, 2012Date of Patent: April 7, 2015Assignees: DENSO CORPORATION, Shin-Etsu Chemical Co., Ltd., Shin-Etsu Polymer Co., LtdInventors: Yoshinobu Suzuki, Katsunori Iwase, Takehiro Kurata, Manabu Maeda, Yoshinori Yoneda, Hiroaki Tetsuka, Jyunya Ishida
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Publication number: 20140165838Abstract: As a permeable membrane of an air conditioning system that performs as supply to a space to be air conditioned through the permeable membrane and/or gas discharge from the space to be air conditioned through the permeable membrane, an asymmetric membrane is used. The asymmetric membrane is made of a cyclic olefin addition polymer obtained by addition polymerization of a cyclic olefin functionality siloxane, or by addition polymerization of the cyclic olefin functionality siloxane and a cyclic olefin compound, and in which a rate of a structural unit derived from the cyclic olefin functionality siloxane is 5 to 100 mol % of the addition polymer, and a number average molecular weight (Mn) is 10,000 to 2,000,000 in terms of polystyrene conversion measured by a GPC using tetrahydrofuran as a solvent.Type: ApplicationFiled: August 1, 2012Publication date: June 19, 2014Applicants: DENSO CORPORATION, SHIN-ETSU POLYMER CO., LTD., SHIN-ETSU CHEMICAL CO., LTD.Inventors: Yoshinobu Suzuki, Katsunori Iwase, Takehiro Kurata, Manabu Maeda, Yoshinori Yoneda, Hiroaki Tetsuka, Jyunya Ishida
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Patent number: 8158732Abstract: A method for preparing a cyclic olefin addition polymer of high gas permeability, which method including subjecting a specific type of cyclic olefin-functional siloxane and a mixture thereof with a specific type of cyclic olefin compound to addition polymerization in the presence of a multi-component catalyst containing (A) a zero-valent palladium compound, (B) an ionic boron compound, and (C) a phosphine compound having a substituent group selected from an alkyl group having 3 to 6 carbon atoms, a cycloalkyl group and an aryl group, to obtain a cyclic olefin addition polymer of high gas permeability wherein a ratio of the structural units derived from the cyclic olefin-functional siloxane is at 10 to 100 mole % of the addition polymer and a number average molecular weight (Mn) ranges from 100,000 to 2,000,000.Type: GrantFiled: July 28, 2011Date of Patent: April 17, 2012Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yasuo Wakatsuki, Hiroaki Tetsuka
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Publication number: 20120029158Abstract: A method for preparing a cyclic olefin addition polymer of high gas permeability, which method including subjecting a specific type of cyclic olefin-functional siloxane and a mixture thereof with a specific type of cyclic olefin compound to addition polymerization in the presence of a multi-component catalyst containing (A) a zero-valent palladium compound, (B) an ionic boron compound, and (C) a phosphine compound having a substituent group selected from an alkyl group having 3 to 6 carbon atoms, a cycloalkyl group and an aryl group, to obtain a cyclic olefin addition polymer of high gas permeability wherein a ratio of the structural units derived from the cyclic olefin-functional siloxane is at 10 to 100 mole % of the addition polymer and a number average molecular weight (Mn) ranges from 100,000 to 2,000,000.Type: ApplicationFiled: July 28, 2011Publication date: February 2, 2012Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Yasuo WAKATSUKI, Hiroaki Tetsuka
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Publication number: 20110301247Abstract: Disclosed herein is a cosmetic product which contains a polymer having the repeating unit represented by the following formula (1) or (2): wherein R1 is independently alkyl group having 1 to 12 carbon atoms, X is a group represented by the following formula (i), a is an integer of 1 to 3, and b is an integer of 0 to 2, wherein R2 is independently alkyl group having 1 to 12 carbon atoms and c is an integer of 1 to 5, wherein R1, R2, and b are defined as above, and d is an integer of 2 to 5.Type: ApplicationFiled: December 29, 2010Publication date: December 8, 2011Inventors: Chihiro HAYAKAWA, Hiroaki Tetsuka, Mamoru Hagiwara, Yoshinori Yoneda
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Publication number: 20100190950Abstract: A cycloolefin addition polymer is prepared by addition polymerization of a cycloolefin-functionalized siloxane and optionally norbornene in the presence of catalyst A which is a nickel or palladium complex having a cyclopentadienyl ligand and a methyl, triphenylphosphine or allyl ligand and co-catalyst B, typically tris(pentafluorophenyl)boron or trityltetra(pentafluorophenyl)borate. The polymer is easy to manufacture and has high thermal stability and mechanical strength as well as good gas permeability.Type: ApplicationFiled: January 27, 2010Publication date: July 29, 2010Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroaki Tetsuka, Mamoru Hagiwara, Shojiro Kaita
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Patent number: 7538075Abstract: A heat dissipating silicone grease composition comprising: (A) 3% to 30% by weight of an organo polysiloxane represented by the general formula, R1aSiO(4?a)/2(R1 is one or two or more groups selected from a group of saturated or unsaturated monovalent hydrocarbon groups containing one to eighteen carbon atoms, and a is a positive number defined by 1.8?a?2.2) having a dynamic viscosity at 25° C. of 50 mm2/s to 500,000 mm2/s; (B) 60% to 96.9% by weight of a thermally conductive filler having a thermal conductivity of at least 10 W/(m·K); and (C) 0.1% to 10% by weight of a solvent that disperses or dissolves component (A).Type: GrantFiled: November 26, 2004Date of Patent: May 26, 2009Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kunihiro Yamada, Hiroaki Tetsuka
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Patent number: 7141273Abstract: Provided is a curable organopolysiloxane composition which includes (A) an organopolysiloxane containing at least 2 alkenyl groups bonded to silicon atoms within each molecule, (B) an organohydrogenpolysiloxane containing at least 2 hydrogen atoms bonded to silicon atoms within each molecule, (C) gallium and/or an alloy thereof, with a melting point within a range from 0 to 70° C., optionally (D) a heat conductive filler with an average particle size within a range from 0.1 to 100 ?m, (E) a platinum based catalyst, and (F) an addition reaction control agent. The composition is useful as a material capable of forming a layer with excellent thermal conductivity that is sandwiched between a heat generating electronic component and a heat radiating member.Type: GrantFiled: October 6, 2004Date of Patent: November 28, 2006Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Akihiro Endo, Kunihiko Mita, Akio Nakano, Kunihiro Yamada, Hiroaki Kizaki, Hiroaki Tetsuka
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Patent number: 6940722Abstract: A heat-dissipating member sandwiched between a heat dissipating electronic component which reaches a higher temperature than room temperature due to operation, and a heat-dissipating component for dissipating the heat produced from this heat dissipating electronic component. The heat-dissipating member of this invention has an interlayer comprising a metal foil and/or metal mesh having a thickness of 1-50 ?m and heat conductivity of 10-500 W/mK, and a layer comprising a thermally-conducting composition containing 100 wt parts of a silicone resin and 1,000-3,000 wt parts of a thermally-conducting filler formed on both surfaces of the interlayer such that the overall thickness is within the range of 40-500 ?m.Type: GrantFiled: January 22, 2003Date of Patent: September 6, 2005Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroaki Tetsuka, Kunihiko Mita, Kunihiro Yamada, Yoshitaka Aoki, Tsutomu Yoneyama
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Publication number: 20050110133Abstract: A heat dissipating silicone grease composition comprising: (A) 3% to 30% by weight of an organo polysiloxane represented by the general formula, R1aSiO(4?a)/2(R1 is one or two or more groups selected from a group of saturated or unsaturated monovalent hydrocarbon groups containing one to eighteen carbon atoms, and a is a positive number defined by 1.8?a?2.2) having a dynamic viscosity at 25° C. of 50 mm2/s to 500,000 mm2/s; (B) 60% to 96.9% by weight of a thermally conductive filler having a thermal conductivity of at least 10 W/(m·K); and (C) 0.1% to 10% by weight of a solvent that disperses or dissolves component (A).Type: ApplicationFiled: November 26, 2004Publication date: May 26, 2005Inventors: Kunihiro Yamada, Hiroaki Tetsuka
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Patent number: 6884660Abstract: The present invention relates to a thermoconducting silicone composition having a viscosity at 25° C. before curing of 10-1,000 Pa·s, a method of installing the composition, and a heat dissipating structure comprising the silicone composition.Type: GrantFiled: December 11, 2002Date of Patent: April 26, 2005Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroaki Tetsuka, Kunihiro Yamada, Kunihiko Mita
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Publication number: 20050084691Abstract: Provided is a curable organopolysiloxane composition which includes (A) an organopolysiloxane containing at least 2 alkenyl groups bonded to silicon atoms within each molecule, (B) an organohydrogenpolysiloxane containing at least 2 hydrogen atoms bonded to silicon atoms within each molecule, (C) gallium and/or an alloy thereof, with a melting point within a range from 0 to 70° C., optionally (D) a heat conductive filler with an average particle size within a range from 0.1 to 100 ?m, (E) a platinum based catalyst, and (F) an addition reaction control agent. The composition is useful as a material capable of forming a layer with excellent thermal conductivity that is sandwiched between a heat generating electronic component and a heat radiating member.Type: ApplicationFiled: October 6, 2004Publication date: April 21, 2005Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Akihiro Endo, Kunihiko Mita, Akio Nakano, Kunihiro Yamada, Hiroaki Kizaki, Hiroaki Tetsuka
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Publication number: 20030151898Abstract: A heat-dissipating member sandwiched between a heat dissipating electronic component which reaches a higher temperature than room temperature due to operation, and a heat-dissipating component for dissipating the heat produced from this heat dissipating electronic component. The heat-dissipating member of this invention has an interlayer comprising a metal foil and/or metal mesh having a thickness of 1-50 &mgr;m and heat conductivity of 10-500 W/mK, and a layer comprising a thermally-conducting composition containing 100 wt parts of a silicone resin and 1,000-3,000 wt parts of a thermally-conducting filler formed on both surfaces of the interlayer such that the overall thickness is within the range of 40-500 &mgr;m.Type: ApplicationFiled: January 22, 2003Publication date: August 14, 2003Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroaki Tetsuka, Kunihiko Mita, Kunihiro Yamada, Yoshitaka Aoki, Tsutomu Yoneyama
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Publication number: 20030127496Abstract: This invention discloses a thermoconducting silicone composition comprising the following components (A)-(F), whereof the viscosity at 25° C. before curing is 10-1000 Pa·s, a method of installing this composition, a heat dissipating structure of a semiconductor device using the same, and a cured material formed by heating this composition in two steps.Type: ApplicationFiled: December 11, 2002Publication date: July 10, 2003Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroaki Tetsuka, Kunihiro Yamada, Kunihiko Mita