Patents by Inventor Nobutoshi Sasaki
Nobutoshi Sasaki 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: 8747703Abstract: There is provided a curable composition which can give a cured product having excellent physical properties and is particularly useful as a material for the separator of a fuel cell such as polymer electrolyte fuel cell. The electrically conducting curable resin composition of the present invention comprises (A) a hydrocarbon compound having a plurality of carbon-carbon double bonds, (B) an elastomer excluding the component (A), and (C) a carbonaceous material.Type: GrantFiled: April 4, 2011Date of Patent: June 10, 2014Assignee: Showa Denko K.K.Inventors: Nobutoshi Sasaki, Masayuki Noguchi, Kentaro Seki
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Patent number: 8293955Abstract: The production process for 1,2,3,4-tetrachlorohexafluorobutane of the present invention is characterized in that 1,2,3,4-tetrachlorobutane is reacted with fluorine in the presence of a solvent containing hydrogen fluoride. The 1,2,3,4-tetrachlorobutane may be obtained by chlorination of 3,4-dichlorobutene-1. Further, the present invention provides as well a process of refining 1,2,3,4-tetrachlorohexafluorobutane obtained in the manner described above. According to the present invention, 1,2,3,4-tetrachlorohexafluorobutane which is useful, for example, as a synthetic raw material for hexafluoro-1,3-butadiene used as an etching gas for semiconductors can industrially efficiently be produced by using 1,2,3,4-tetrachlorobutane which is a by-product of chloroprene and which has so far been disposed.Type: GrantFiled: March 26, 2008Date of Patent: October 23, 2012Assignee: Showa Denko K.K.Inventors: Hiromoto Ohno, Toshio Ohi, Nobutoshi Sasaki, Kiyoshi Nomura
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Patent number: 8138296Abstract: Novel epoxy compounds represented by the general formula: (wherein R1 and R2 each represent hydrogen, a C1-6 alkyl group or a C1-4 trialkylsilyl group, each R3 may be the same or different and each independently represents hydrogen, alkyl, aryl, aralkyl, alkenyl or fluoroalkyl, and n is 0 or a positive integer), and the general formula: (wherein R3 represents the same groups specified above, R4 represents hydrogen, a C1-6 alkyl group or a C1-4 trialkylsilyl group, and n is 0 or a positive integer), and a process for their production.Type: GrantFiled: May 30, 2007Date of Patent: March 20, 2012Assignee: Showa Denko K.K.Inventors: Nobutoshi Sasaki, Toshio Fujita, Hiroshi Uchida
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Publication number: 20110180762Abstract: There is provided a curable composition which can give a cured product having excellent physical properties and is particularly useful as a material for the separator of a fuel cell such as polymer electrolyte fuel cell. The electrically conducting curable resin composition of the present invention comprises (A) a hydrocarbon compound having a plurality of carbon-carbon double bonds, (B) an elastomer excluding the component (A), and (C) a carbonaceous material.Type: ApplicationFiled: April 4, 2011Publication date: July 28, 2011Applicant: SHOWA DENKO K.K.Inventors: Nobutoshi SASAKI, Masayuki NOGUCHI, Kentaro SEKI
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Patent number: 7880018Abstract: A novel epoxy compound represented by the following general formula (I), and a production process thereof, is provided: Y—(CH2)3—Si(OR1)nR23-n??(I) (wherein, Y is represented by any of the following formulas: wherein, R1 and R2 represent alkyl groups having 1 to 5 carbon atoms, n represents an integer of 1 to 3, R3 and R4 represent hydrogen atoms, alkyl groups having 1 to 6 carbon atoms or trialkylsilyl groups having 1 to 4 carbon atoms, R5 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a trialkylsilyl group having 1 to 4 carbon atoms, R6 to R12 represent hydrogen atoms, alkyl groups having 1 to 6 carbon atoms or trialkylsilyl groups having 1 to 4 carbon atoms, and R13 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a trialkylsilyl group having 1 to 4 carbon atoms or an aryl group).Type: GrantFiled: August 13, 2007Date of Patent: February 1, 2011Assignee: Showa Denko K.K.Inventors: Nobutoshi Sasaki, Toshio Fujita, Hiroshi Uchida
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Patent number: 7863461Abstract: Novel epoxy compounds having imide structures represented by general formula (I) or general formula (II) below, and having an allyl group in the same molecule, as well as a process for their production (wherein R1 and R2 each represent hydrogen, a C1-6 alkyl group, or a C1-4 trialkylsilyl group) (wherein R3 represents hydrogen, a C1-6 alkyl group, or a C1-4 trialkylsilyl group).Type: GrantFiled: May 17, 2007Date of Patent: January 4, 2011Assignees: Showa Denko K.K., National Institute of Advanced Industrial Science and TechnologyInventors: Toshio Fujita, Yuji Kobayashi, Hiroshi Uchida, Nobutoshi Sasaki, Kazuhiko Sato, Masanori Ookoshi, Masao Shimizu
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Publication number: 20100197936Abstract: A novel epoxy compound represented by the following general formula (I), and a production process thereof, is provided: Y—(CH2)3—Si(OR1)nR23-n??(I) (wherein, Y is represented by any of the following formulas: wherein, R1 and R2 represent alkyl groups having 1 to 5 carbon atoms, n represents an integer of 1 to 3, R3 and R4 represent hydrogen atoms, alkyl groups having 1 to 6 carbon atoms or trialkylsilyl groups having 1 to 4 carbon atoms, R5 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a trialkylsilyl group having 1 to 4 carbon atoms, R6 to R12 represent hydrogen atoms, alkyl groups having 1 to 6 carbon atoms or trialkylsilyl groups having 1 to 4 carbon atoms, and R13 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a trialkylsilyl group having 1 to 4 carbon atoms or an aryl group).Type: ApplicationFiled: August 13, 2007Publication date: August 5, 2010Applicant: SHOWA DENKO K.K.Inventors: Nobutoshi Sasaki, Toshio Fujita, Hiroshi Uchida
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Publication number: 20100130798Abstract: The production process for 1,2,3,4-tetrachlorohexafluorobutane of the present invention is characterized in that 1,2,3,4-tetrachlorobutane is reacted with fluorine in the presence of a solvent containing hydrogen fluoride. The 1,2,3,4-tetrachlorobutane may be obtained by chlorination of 3,4-dichlorobutene-1. Further, the present invention provides as well a process of refining 1,2,3,4-tetrachlorohexafluorobutane obtained in the manner described above. According to the present invention, 1,2,3,4-tetrachlorohexafluorobutane which is useful, for example, as a synthetic raw material for hexafluoro-1,3-butadiene used as an etching gas for semiconductors can industrially efficiently be produced by using 1,2,3,4-tetrachlorobutane which is a by-product of chloroprene and which has so far been disposed.Type: ApplicationFiled: March 26, 2008Publication date: May 27, 2010Applicant: SHOWA DENK K.K.Inventors: Hiromoto Ohno, Toshio Ohi, Nobutoshi Sasaki, Kiyoshi Nomura
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Publication number: 20090253915Abstract: Novel epoxy compounds having imide structures represented by general formula (I) or general formula (II) below, and having an allyl group in the same molecule, as well as a process for their production.Type: ApplicationFiled: May 17, 2007Publication date: October 8, 2009Applicants: SHOWA DENKO K.K., National Institute of Advanced Industrial Science and TechnologyInventors: Toshio Fujita, Yuji Kobayashi, Hiroshi Uchida, Nobutoshi Sasaki, Kazuhiko Sato, Masanori Ookoshi, Masao Shimizu
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Publication number: 20090182110Abstract: Novel epoxy compounds represented by the general formula: (wherein R1 and R2 each represent hydrogen, a C1-6 alkyl group or a C1-4 trialkylsilyl group, each R3 may be the same or different and each independently represents hydrogen, alkyl, aryl, aralkyl, alkenyl or fluoroalkyl, and n is 0 or a positive integer), and the general formula: (wherein R3 represents the same groups specified above, R4 represents hydrogen, a C1-6 alkyl group or a C1-4 trialkylsilyl group, and n is 0 or a positive integer), and a process for their production.Type: ApplicationFiled: May 30, 2007Publication date: July 16, 2009Applicant: Showa Denko K.K.Inventors: Nobutoshi Sasaki, Toshio Fujita, Hiroshi Uchida
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Publication number: 20090011318Abstract: There is provided a curable composition which can give a cured product having excellent physical properties and is particularly useful as a material for the separator of a fuel cell such as polymer electrolyte fuel cell. The electrically conducting curable resin composition of the present invention comprises (A) a hydrocarbon compound having a plurality of carbon-carbon double bonds, (B) an elastomer excluding the component (A), and (C) a carbonaceous material.Type: ApplicationFiled: March 20, 2006Publication date: January 8, 2009Applicant: SHOWA DENKO K.K.Inventors: Nobutoshi Sasaki, Masayuki Noguchi, Kentaro Seki
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Patent number: 7112647Abstract: An object of the present invention is to provide a fluorinated polymer of adequate molecular weight with excellent transparency in a wavelength range from visible to near infrared, and to also provide a method of producing such a polymer. The present invention provides a fluorinated polymer comprising a structure represented by a formula (1) as a structural unit, as well as a method of producing this polymer using a corresponding tetrafluoroxylylenediamine or a tetrafluoroxylylene glycol as a raw material.Type: GrantFiled: December 25, 2002Date of Patent: September 26, 2006Assignee: Showa Denko K.K.Inventors: Isamu Taguchi, Ryuji Monden, Nobutoshi Sasaki, Hideo Miyata, Kohei Morikawa
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Publication number: 20050080230Abstract: An object of the present invention is to provide a fluorinated polymer of adequate molecular weight with excellent transparency in a wavelength range from visible to near infrared, and to also provide a method of producing such a polymer. The present invention provides a fluorinated polymer comprising a structure represented by a formula (1) as a structural unit, as well as a method of producing this polymer using a corresponding tetrafluoroxylylenediamine or a tetrafluoroxylylene glycol as a raw material.Type: ApplicationFiled: December 25, 2002Publication date: April 14, 2005Inventors: Isamu Taguchi, Ryuji Monden, Nobutoshi Sasaki, Hideo Miyata, Kohei Morikawa
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Patent number: 4736129Abstract: An ultrasonic motor includes piezoelectric resonators for generating vibration waves, an elastic vibration member along which an elastic wave propagates when driving of the piezoelectric resonators is driven, a sliding member located in contact with the elastic vibration member under pressure and adapted to slide along the elastic vibration member when the elastic wave propagates, and a friction member located on the sliding member and brought into frictional contact with the elastic vibration member, the friction member being made of a material having a hardness of less than 100 and larger than 94 measured by a spring A type hardness tester, a hardness of 40 to 120 measured by a Rockwell's R type hardness tester, hardness of 20 to 80 measured by a Rockwell's M type hardness tester, a hardness of 40 to 90 measured by a Shore A type hardness tester, or a hardness of 20 to 70 measured by a Shore D type hardness tester.Type: GrantFiled: May 27, 1986Date of Patent: April 5, 1988Assignee: Marcon Electronics Co., Ltd.Inventors: Akira Endo, Nobutoshi Sasaki