Patents by Inventor Masaei Ito
Masaei Ito 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: 10746014Abstract: A method and a system for monitoring a condition of an elastic element used in a downhole tool are provided. The method comprises acquiring an output signal from a flexible-type sensor installed in the elastic element, the sensor sensing at least one of strain and stress of the elastic element, and estimating a condition of the elastic element based on the output signal from the sensor. The system comprises a flexible-type sensor installed in the elastic element, the sensor sensing at least one of strain and stress of the elastic element and a processor to acquire an output signal from the sensor and estimate a condition of the elastic element based on the output signal from the sensor.Type: GrantFiled: February 9, 2018Date of Patent: August 18, 2020Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Masaei Ito, Manuel Marya, Tsutomu Yamate, Osamu Osawa
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Publication number: 20190249540Abstract: A method and a system for monitoring a condition of an elastic element used in a downhole tool are provided. The method comprises acquiring an output signal from a flexible-type sensor installed in the elastic element, the sensor sensing at least one of strain and stress of the elastic element, and estimating a condition of the elastic element based on the output signal from the sensor. The system comprises a flexible-type sensor installed in the elastic element, the sensor sensing at least one of strain and stress of the elastic element and a processor to acquire an output signal from the sensor and estimate a condition of the elastic element based on the output signal from the sensor.Type: ApplicationFiled: February 9, 2018Publication date: August 15, 2019Inventors: Masaei Ito, Manuel Marya, Tsutomu Yamate, Osamu Osawa
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Patent number: 9874069Abstract: A seal assembly and an apparatus including the same are provided. The seal assembly may include a seal member with axially opposing sides and one or two back-up rings for substantially supporting at least one side of the seal member. The seal member may be made of elastomer and have an axially extending base with one or two flange portions and a protrusion extending perpendicularly from the base. The back-up ring may be made of a plastic material and a portion of the back-up ring may abut a radially outer surface of the flange portion of the seal member.Type: GrantFiled: May 18, 2016Date of Patent: January 23, 2018Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Masaei Ito, Hitoshi Sugiyama
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Publication number: 20160348461Abstract: A seal assembly and an apparatus including the same are provided. The seal assembly may include a seal member with axially opposing sides and one or two back-up rings for substantially supporting at least one side of the seal member. The seal member may be made of elastomer and have an axially extending base with one or two flange portions and a protrusion extending perpendicularly from the base. The back-up ring may be made of a plastic material and a portion of the back-up ring may abut a radially outer surface of the flange portion of the seal member.Type: ApplicationFiled: May 18, 2016Publication date: December 1, 2016Inventors: Masaei Ito, Hitoshi Sugiyama
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Publication number: 20160319087Abstract: An oilfield apparatus includes a seal member. The seal member is formed of a rubber composition that includes a rubber, and at least either oxycellulose fibers or cellulose nanofibers that are dispersed in the rubber in an untangled state, and does not include an aggregate that includes at least either the oxycellulose fibers or the cellulose nanofibers and has a diameter of 0.1 mm or more. The rubber composition includes at least either the oxycellulose fibers or the cellulose nanofibers in a ratio of 1 to 60 parts by mass based on 100 parts by mass of the rubber. The oxycellulose fibers have an average fiber diameter of 10 to 30 micrometers. The cellulose nanofibers have an average fiber diameter of 1 to 200 nm.Type: ApplicationFiled: April 27, 2016Publication date: November 3, 2016Applicants: NISSIN KOGYO CO., LTD., SCHLUMBERGER TECHNOLOGY CORPORATION, SHINSHU UNIVERSITYInventors: Kenichi NIIHARA, Keiichi KAWAMOTO, Hiroyuki UEKI, Masaei ITO, Toru NOGUCHI
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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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Publication number: 20140154454Abstract: The heat resistant seal member according to one aspect of the present disclosure contains, for 100 parts by weight of a ternary fluoroelastomer, 5 to 15 parts by weight of first carbon nanofibers, 10 to 15 parts by weight of second carbon nanofibers, and 0 to 20 parts by weight of carbon black. The total amount of the first carbon nanofibers and the second carbon nanofibers are 15 to 30 parts by weight, and the total amount of the first carbon nanofibers, the second nanofibers, and the carbon black is 20 to 45 parts by weight. The heat resistant seal member can achieve a compression set of not more than 40% after 70 hours and 25% compressibility in a hydrogen sulfide gas atmosphere at 200° C.Type: ApplicationFiled: December 2, 2013Publication date: June 5, 2014Applicants: Shinshu University, Schlumberger Technology CorporationInventors: Hiroyuki Ueki, Toru Noguchi, 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: 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: 20130020769Abstract: A sealing member is obtained by molding a carbon fiber composite material (50) including a perfluoroelastomer (FFKM), and carbon nanofibers dispersed in the perfluoroelastomer, the carbon nanofibers having an average diameter of 0.4 to 230 nm. The perfluoroelastomer (FFKM) has a TR-10 value of ?10° C. or less as measured by a temperature-retraction test (TR test) in accordance with JIS K 6261. The carbon fiber composite material (50) in a crosslinked form has a peak temperature of a loss tangent (tandelta) of ?15° C. or less as measured by a dynamic viscoelasticity test.Type: ApplicationFiled: July 5, 2012Publication date: January 24, 2013Applicants: SCHLUMBERGER TECHNOLOGY CORPORATION, SHINSHU UNIVERSITY, NISSHIN KOGYO CO., LTD.Inventors: Hiroyuki Ueki, Toru Noguchi, Masaei Ito
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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: 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: 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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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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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: 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