Patents by Inventor Shigeki Inukai
Shigeki Inukai 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: 11000811Abstract: A method of manufacturing a reverse osmosis composite membrane, including: (i) bringing a mixed liquid containing carbon nanotubes, water, and an amine component into contact with a porous support, the mixed liquid being produced through a step of pressurizing and compressing an aqueous solution containing the carbon nanotubes while flowing the aqueous solution, followed by releasing or reducing a pressure to return a volume of the aqueous solution to an original volume to mix the carbon nanotubes; and then (ii) subjecting the amine component in the mixed liquid adhering to the porous support to a crosslinking reaction.Type: GrantFiled: May 7, 2019Date of Patent: May 11, 2021Assignee: SHINSHU UNIVERSITYInventors: Morinobu Endo, Toru Noguchi, Shigeki Inukai
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Publication number: 20190321788Abstract: A method of manufacturing a reverse osmosis composite membrane, including: (i) bringing a mixed liquid containing carbon nanotubes, water, and an amine component into contact with a porous support, the mixed liquid being produced through a step of pressurizing and compressing an aqueous solution containing the carbon nanotubes while flowing the aqueous solution, followed by releasing or reducing a pressure to return a volume of the aqueous solution to an original volume to mix the carbon nanotubes; and then (ii) subjecting the amine component in the mixed liquid adhering to the porous support to a crosslinking reaction.Type: ApplicationFiled: May 7, 2019Publication date: October 24, 2019Applicant: SHINSHU UNIVERSITYInventors: Morinobu ENDO, Toru NOGUCHI, Shigeki INUKAI
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Patent number: 10376847Abstract: A reverse osmosis composite membrane includes: a porous support; and a reverse osmosis membrane arranged on the porous support and containing a crosslinked polyamide and carbon nanotubes. The reverse osmosis membrane contains the carbon nanotubes that are disentangled in the crosslinked polyamide. A distribution of closest distances between the carbon nanotubes in the reverse osmosis membrane has a peak that is within a range of a thickness of the reverse osmosis membrane, and a half width of the peak is equal to or less than the thickness of the reverse osmosis membrane.Type: GrantFiled: March 29, 2016Date of Patent: August 13, 2019Assignee: SHINSHU UNIVERSITYInventors: Morinobu Endo, Toru Noguchi, Shigeki Inukai
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Publication number: 20180043312Abstract: A reverse osmosis composite membrane includes: a porous support; and a reverse osmosis membrane arranged on the porous support and containing a crosslinked polyamide and carbon nanotubes. The reverse osmosis membrane contains the carbon nanotubes that are disentangled in the crosslinked polyamide. A distribution of closest distances between the carbon nanotubes in the reverse osmosis membrane has a peak that is within a range of a thickness of the reverse osmosis membrane, and a half width of the peak is equal to or less than the thickness of the reverse osmosis membrane.Type: ApplicationFiled: March 29, 2016Publication date: February 15, 2018Applicant: SHINSHU UNIVERSITYInventors: Morinobu ENDO, Toru NOGUCHI, Shigeki INUKAI
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Publication number: 20150065635Abstract: A carbon fiber composite material comprising 100 parts by mass of an elastomer, and 20 to 100 parts by mass of carbon nanofibers that have been oxidized and reduced in number of branch points. The carbon fiber composite material has a dynamic modulus of elasticity (E?) at 200° C. and 10 Hz of 10 to 1000 MPa, and a volume resistivity of 106 to 1018 ohms·cm.Type: ApplicationFiled: October 24, 2014Publication date: March 5, 2015Inventors: Toru NOGUCHI, Hiroyuki UEKI, Shigeki INUKAI, Satoshi IINOU, Masaei ITO
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Patent number: 8901228Abstract: A carbon fiber composite material comprising 100 parts by mass of an elastomer, and 20 to 100 parts by mass of carbon nanofibers that have been oxidized and reduced in number of branch points. The carbon fiber composite material has a dynamic modulus of elasticity (E?) at 200° C. and 10 Hz of 10 to 1000 MPa, and a volume resistivity of 106 to 1018 ohms·cm.Type: GrantFiled: December 28, 2009Date of Patent: December 2, 2014Assignees: Nissin Kogyo Co., Ltd., Schlumberger Technology CorporationInventors: Toru Noguchi, Hiroyuki Ueki, Shigeki Inukai, Satoshi Iinou, Masaei Ito
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Patent number: 8614273Abstract: A seal member includes a hydrogenated acrylonitrile-butadiene rubber (HNBR) and carbon nanofibers. The seal member has a number of cycles to fracture of 7000 or more when subjected to a tensile fatigue test at a temperature of 70° C., a maximum tensile stress of 4 N/mm, and a frequency of 1 Hz. The seal member exhibits excellent abrasion resistance.Type: GrantFiled: December 28, 2009Date of Patent: December 24, 2013Assignees: Nissin Kogyo Co., Ltd., Schlumberger Technology Corporation, Shinshu UniversityInventors: Toru Noguchi, Hiroyuki Ueki, Shigeki Inukai, Masaei Ito, Raghu Madhavan, Morinobu Endo, Satoshi Iinou
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Patent number: 8415420Abstract: A method of producing a carbon fiber composite material includes a first step and a second step. The first step includes oxidizing first carbon nanofibers produced by a vapor growth method to obtain second carbon nanofibers having an oxidized surface. The second step includes mixing the second carbon nanofibers into an elastomer, and uniformly dispersing the carbon nanofibers in the elastomer by applying a shear force to obtain the carbon fiber composite material. The second carbon nanofibers obtained by the first step have a surface oxygen concentration measured by X-ray photoelectron spectroscopy (XPS) of 2.6 to 4.6 atm %.Type: GrantFiled: August 3, 2012Date of Patent: April 9, 2013Assignee: Nissin Kogyo Co., Ltd.Inventors: Toru Noguchi, Hiroyuki Ueki, Shigeki Inukai, Kenji Takeuchi, Satoshi Iinou
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Patent number: 8403332Abstract: The seal member includes a tetrafluoroethylene-propylene copolymer (FEPM) and carbon nanofibers. The seal member has a number of cycles to fracture of 10 or more when subjected to a tension fatigue test at a temperature of 150° C., a maximum tensile stress of 2 N/mm, and a frequency of 1 Hz. The seal member exhibits excellent heat resistance and abrasion resistance.Type: GrantFiled: December 28, 2009Date of Patent: March 26, 2013Assignees: Nissan Kogyo Co., Ltd, Schlumberger Technology Corporation, Shinshu UniversityInventors: Toru Noguchi, Hiroyuki Ueki, Shigeki Inukai, Masaei Ito, Raghu Madhavan, Morinobu Endo, Satoshi Iinou
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Publication number: 20130012644Abstract: A carbon fiber composite material (50) includes an elastomer, and carbon nanofibers dispersed in the elastomer in an amount of 0.01 to 0.70 parts by mass based on 100 parts by mass of the elastomer, the carbon nanofibers having an average diameter of 0.4 to 7.0 nm. A method of producing a carbon fiber composite material includes mixing carbon nanofibers having an average diameter of 0.4 to 7.0 nm into an elastomer in an amount of 0.01 to 0.70 parts by mass based on 100 parts by mass of the elastomer, and tight-milling the mixture at 0 to 50° C. using an open roll at a roll distance of 0.5 mm or less to obtain a carbon fiber composite material (50).Type: ApplicationFiled: June 15, 2012Publication date: January 10, 2013Applicants: SCHLUMBERGER TECHNOLOGY CORPORATION, SHINSHU UNIVERSITY, NISSIN KOGYO CO., LTD.Inventors: Ken'ichi Niihara, Toru Noguchi, Hiroyuki Ueki, Shigeki Inukai, Masaei Ito
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Publication number: 20120309887Abstract: A method of producing a carbon fiber composite material includes a first step and a second step. The first step includes oxidizing first carbon nanofibers produced by a vapor growth method to obtain second carbon nanofibers having an oxidized surface. The second step includes mixing the second carbon nanofibers into an elastomer, and uniformly dispersing the carbon nanofibers in the elastomer by applying a shear force to obtain the carbon fiber composite material. The second carbon nanofibers obtained by the first step have a surface oxygen concentration measured by X-ray photoelectron spectroscopy (XPS) of 2.6 to 4.6 atm %.Type: ApplicationFiled: August 3, 2012Publication date: December 6, 2012Applicant: NISSIN KOGYO CO., LTD.Inventors: Toru NOGUCHI, Hiroyuki UEKI, Shigeki INUKAI, Kenji TAKEUCHI, Satoshi IINOU
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Patent number: 8263698Abstract: A method of producing a carbon fiber composite material includes a first step and a second step. The first step includes oxidizing first carbon nanofibers produced by a vapor growth method to obtain second carbon nanofibers having an oxidized surface. The second step includes mixing the second carbon nanofibers into an elastomer, and uniformly dispersing the carbon nanofibers in the elastomer by applying a shear force to obtain the carbon fiber composite material. The second carbon nanofibers obtained by the first step have a surface oxygen concentration measured by X-ray photoelectron spectroscopy (XPS) of 2.6 to 4.6 atm %.Type: GrantFiled: April 8, 2009Date of Patent: September 11, 2012Assignees: Nissin Kogyo Co., Ltd., Mefs Kabushiki KaishaInventors: Toru Noguchi, Hiroyuki Ueki, Shigeki Inukai, Kenji Takeuchi, Satoshi Iinou
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Publication number: 20110156355Abstract: A seal member includes a hydrogenated acrylonitrile-butadiene rubber (HNBR) and carbon nanofibers. The seal member has a number of cycles to fracture of 7000 or more when subjected to a tensile fatigue test at a temperature of 70° C., a maximum tensile stress of 4 N/mm, and a frequency of 1 Hz. The seal member exhibits excellent abrasion resistance.Type: ApplicationFiled: December 28, 2009Publication date: June 30, 2011Applicants: NISSIN KOGYO CO., LTD, SCHLUMBERGER TECHNOLOGY CORPORATION, SHINSHU UNIVERSITY, MEFS KABUSHIKI KAISHAInventors: Toru NOGUCHI, Hiroyuki UEKI, Shigeki INUKAI, Masaei ITO, Raghu MADHAVAN, Morinobu ENDO, Satoshi IINOU
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Publication number: 20110156357Abstract: A dynamic seal member includes a ternary fluoroelastomer (FKM) and carbon nanofibers. The carbon nanofibers are carbon nanofibers having an average diameter of 10 to 20 nm, or carbon nanofibers having an average diameter of 60 to 110 nm and subjected to a low-temperature heat treatment. The carbon nanofibers having an average diameter of 60 to 110 nm and subjected to the low-temperature heat treatment have a ratio (D/G) of a peak intensity D at around 1300 cm?1 to a peak intensity G at around 1600 cm?1 measured by Raman scattering spectroscopy of more than 0.9 and less than 1.6. The dynamic seal member has a number of cycles to fracture of 10 or more when subjected to a tension fatigue test at a temperature of 200° C., a maximum tensile stress of 2.5 N/mm, and a frequency of 1 Hz. The dynamic seal member exhibits excellent heat resistance and abrasion resistance.Type: ApplicationFiled: December 28, 2009Publication date: June 30, 2011Applicants: NISSIN KOGYO CO., LTD., SCHLUMBERGER TECHNOLOGY CORPORATION, SHINSHU UNIVERSITY, MEFS KABUSHIKI KAISHAInventors: Toru NOGUCHI, Hiroyuki UEKI, Shigeki INUKAI, Masaei ITO, Raghu MADHAVAN, Morinobu ENDO, Satoshi IINOU
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Publication number: 20110156356Abstract: The seal member includes a tetrafluoroethylene-propylene copolymer (FEPM) and carbon nanofibers. The seal member has a number of cycles to fracture of 10 or more when subjected to a tension fatigue test at a temperature of 150° C., a maximum tensile stress of 2 N/mm, and a frequency of 1 Hz. The seal member exhibits excellent heat resistance and abrasion resistance.Type: ApplicationFiled: December 28, 2009Publication date: June 30, 2011Applicants: NISSIN KOGYO CO., LTD., SCHLUMBERGER TECHNOLOGY CORPORATION, SHINSHU UNIVERSITY, MEFS KABUSHIKI KAISHAInventors: Toru NOGUCHI, Hiroyuki UEKI, Shigeki INUKAI, Masaei ITO, Raghu MADHAVAN, Morinobu ENDO, Satoshi IINOU
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Publication number: 20110160375Abstract: A carbon fiber composite material comprising 100 parts by mass of an elastomer, and 20 to 100 parts by mass of carbon nanofibers that have been oxidized and reduced in number of branch points. The carbon fiber composite material has a dynamic modulus of elasticity (E?) at 200° C. and 10 Hz of 10 to 1000 MPa, and a volume resistivity of 106 to 1018 ohms·cm.Type: ApplicationFiled: December 28, 2009Publication date: June 30, 2011Applicants: NISSIN KOGYO CO., LTD., MEFS KABUSHIKI KAISHA, SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Toru NOGUCHI, Hiroyuki UEKI, Shigeki INUKAI, Satoshi IINOU, Masaei ITO
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Patent number: 7919554Abstract: A heat-resistant seal material includes 100 parts by weight of a ternary fluoroelastomer, 1 to 30 parts by weight of vapor-grown carbon fibers having an average diameter of more than 30 nm and 200 nm or less, and carbon black having an average particle diameter of 25 to 500 nm. The heat-resistant seal material contains the vapor-grown carbon fibers and the carbon black in an amount of 20 to 40 parts by weight in total. The heat-resistant seal material has a compression set when subjected to a compression set test at a compression rate of 25% and a temperature of 200° C. for 70 hours of 0 to 15% and a dynamic modulus of elasticity at 200° C. (E?/200° C.) of 30 to 100 MPa.Type: GrantFiled: December 3, 2008Date of Patent: April 5, 2011Assignees: Nissin Kogyo Co., Ltd., Schlumberger Technology CorporationInventors: Toru Noguchi, Hiroyuki Ueki, Akira Magario, Shigeki Inukai, Masaei Ito, Takashi Wanibuchi, Takushi Matsushita, Tsuyoshi Watanabe
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Publication number: 20110060087Abstract: A method of producing a carbon fiber composite material includes a first step and a second step. The first step includes oxidizing first carbon nanofibers produced by a vapor growth method to obtain second carbon nanofibers having an oxidized surface. The second step includes mixing the second carbon nanofibers into an elastomer, and uniformly dispersing the carbon nanofibers in the elastomer by applying a shear force to obtain the carbon fiber composite material. The second carbon nanofibers obtained by the first step have a surface oxygen concentration measured by X-ray photoelectron spectroscopy (XPS) of 2.6 to 4.6 atm %.Type: ApplicationFiled: April 8, 2009Publication date: March 10, 2011Applicants: NISSIN KOGYO CO., LTD., MEFS KABUSHIKI KAISHAInventors: Toru Noguchi, Hiroyuki Ueki, Shigeki Inukai, Kenji Takeuchi, Satoshi Iinou
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Publication number: 20090253852Abstract: A heat-resistant seal material includes 100 parts by weight of a ternary fluoroelastomer, 1 to 30 parts by weight of vapor-grown carbon fibers having an average diameter of more than 30 nm and 200 nm or less, and carbon black having an average particle diameter of 25 to 500 nm. The heat-resistant seal material contains the vapor-grown carbon fibers and the carbon black in an amount of 20 to 40 parts by weight in total. The heat-resistant seal material has a compression set when subjected to a compression set test at a compression rate of 25% and a temperature of 200° C. for 70 hours of 0 to 15% and a dynamic modulus of elasticity at 200° C. (E?/200° C.) of 30 to 100 MPa.Type: ApplicationFiled: December 3, 2008Publication date: October 8, 2009Applicants: NISSIN KOGYO CO., LTD., SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Toru NOGUCHI, Hiroyuki UEKI, Akira MAGARIO, Shigeki INUKAI, Masaei ITO, Takashi WANIBUCHI, Takushi MATSUSHITA, Tsuyoshi WATANABE