Patents by Inventor Yasuo Imashiro
Yasuo Imashiro 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).
-
Patent number: 11398629Abstract: Provided are a carbon catalyst, an electrode, and a battery that exhibit excellent activity. A carbon catalyst according to one embodiment of the present invention has a carbon structure in which area ratios of three peaks fbroad, fmiddle, and fnarrow obtained by separating a peak in the vicinity of a diffraction angle of 26° in an X-ray diffraction pattern obtained by powder X-ray diffraction satisfy the following conditions (a) to (c): (a) fbroad: 75% or more and 96% or less; (b) fmiddle: 3.2% or more and 15% or less; and (c) fnarrow: 0.4% or more and 15% or less.Type: GrantFiled: September 25, 2019Date of Patent: July 26, 2022Assignees: NISSHINBO HOLDINGS INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Yasuo Imashiro, Takeaki Kishimoto, Tetsutaro Sato, Jun-ichi Ozaki, Takuya Maie, Sayaka Kusadokoro
-
Patent number: 11276865Abstract: A carbon catalyst has improved catalytic activity, and an electrode and a battery include the carbon catalyst. A carbon catalyst includes a metal and phosphorus atoms, wherein a ratio of a concentration (atomic %) of the phosphorus atoms exhibiting a peak having a peak top within a range of 132.5±0.3 eV and having a full width at half maximum of 2.0±0.5 eV, which is obtained by peak separation of a phosphorus atom P2p peak, with respect to a concentration (atomic %) of carbon atoms in X-ray photoelectron spectroscopic measurement is 0.0005 or more.Type: GrantFiled: November 30, 2017Date of Patent: March 15, 2022Assignees: NISSHINBO HOLDINGS INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Rieko Kameyama, Yasuo Imashiro, Jun-ichi Ozaki, Takafumi Ishii
-
Patent number: 11214485Abstract: A carbon material that is compact and exhibits an excellent hydrogen storage capacity. A carbon material has a specific surface area of 200 m2/g or less and exhibits a hydrogen storage capacity of 1.5×10?5 g/m2 or more at a hydrogen pressure of 10 MPa.Type: GrantFiled: November 30, 2015Date of Patent: January 4, 2022Assignees: NISSHINBO HOLDINGS INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Yasuo Imashiro, Rieko Kobayashi, Noriko Osuga, Jun-ichi Ozaki, Hirotaka Kujirai, Setsura Kobayashi
-
Publication number: 20200036013Abstract: Provided are a carbon catalyst, an electrode, and a battery that exhibit excellent activity. A carbon catalyst according to one embodiment of the present invention has a carbon structure in which area ratios of three peaks fbroad, fmiddle, and fnarrow obtained by separating a peak in the vicinity of a diffraction angle of 26° in an X-ray diffraction pattern obtained by powder X-ray diffraction satisfy the following conditions (a) to (c): (a) fbroad: 75% or more and 96% or less; (b) fmiddle: 3.2% or more and 15% or less; and (c) fnarrow: 0.4% or more and 15% or less.Type: ApplicationFiled: September 25, 2019Publication date: January 30, 2020Applicants: NISSHINBO HOLDINGS INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Yasuo IMASHIRO, Takeaki Kishimoto, Tetsutaro Sato, Jun-ichi Ozaki, Takuya Maie, Sayaka Kusadokoro
-
Patent number: 10468688Abstract: Provided are a carbon catalyst, an electrode, and a battery that exhibit excellent activity. A carbon catalyst according to one embodiment of the present invention has a carbon structure in which area ratios of three peaks fbroad, fmiddle, and fnarrow obtained by separating a peak in the vicinity of a diffraction angle of 26° in an X-ray diffraction pattern obtained by powder X-ray diffraction satisfy the following conditions (a) to (c): (a) fbroad: 75% or more and 96% or less; (b) fmiddle: 3.2% or more and 15% or less; and (c) fnarrow: 0.4% or more and 15% or less.Type: GrantFiled: November 30, 2015Date of Patent: November 5, 2019Assignees: NISSHINBO HOLDINGS INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Yasuo Imashiro, Takeaki Kishimoto, Tetsutaro Sato, Jun-ichi Ozaki, Takuya Maie, Sayaka Kusadokoro
-
Publication number: 20190296365Abstract: A carbon catalyst has improved catalytic activity, and an electrode and a battery include the carbon catalyst. A carbon catalyst includes a metal and phosphorus atoms, wherein a ratio of a concentration (atomic %) of the phosphorus atoms exhibiting a peak having a peak top within a range of 132.5±0.3 eV and having a full width at half maximum of 2.0±0.5 eV, which is obtained by peak separation of a phosphorus atom P2p peak, with respect to a concentration (atomic %) of carbon atoms in X-ray photoelectron spectroscopic measurement is 0.0005 or more.Type: ApplicationFiled: November 30, 2017Publication date: September 26, 2019Applicants: NISSHINBO HOLDINGS INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Rieko KAMEYAMA, Yasuo IMASHIRO, Jun-ichi OZAKI, Takafumi ISHII
-
Patent number: 10392249Abstract: A hydrogen storage carbon material having a carbon structure suited for hydrogen storage and a production method thereof. The hydrogen storage carbon material according to this embodiment includes a carbon structure which has a ratio of an ultramicropore volume to a micropore volume of 60% or more, and in which stored hydrogen exhibits, in 1H-NMR measurement, a second peak at a position corresponding to a chemical shift of from ?2 ppm to ?20 ppm with respect to a first peak attributed to gaseous hydrogen.Type: GrantFiled: June 17, 2016Date of Patent: August 27, 2019Assignees: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY, NISSHINBO HOLDINGS INC.Inventors: Haruo Kumagai, Jun-ichi Ozaki, Asao Oya, Takafumi Ishii, Takuya Maie, Rieko Kobayashi, Yasuo Imashiro
-
Patent number: 10388967Abstract: A porous carbon catalyst exhibiting excellent catalytic activity and a method of producing the same, and an electrode and a battery. The porous carbon catalyst is obtained through carbonization of an organic polymer porous body having a skeleton containing a metal in an inside thereof. The porous carbon catalyst may have a skeleton containing the metal in an inside thereof, and the skeleton may be a particle aggregate-like skeleton. The method of producing a porous carbon catalyst includes carbonizing an organic polymer porous body having a skeleton containing a metal in an inside thereof.Type: GrantFiled: June 4, 2014Date of Patent: August 20, 2019Assignee: NISSHINBO HOLDINGS INC.Inventors: Yasuo Imashiro, Yuji Kubota, Akiko Taira
-
Publication number: 20180282156Abstract: A carbon material that is compact and exhibits an excellent hydrogen storage capacity. A carbon material has a specific surface area of 200 m2/g or less and exhibits a hydrogen storage capacity of 1.5×10?5 g/m2 or more at a hydrogen pressure of 10 MPa.Type: ApplicationFiled: November 30, 2015Publication date: October 4, 2018Applicants: NISSHINBO HOLDINGS INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Yasuo IMASHIRO, Rieko KOBAYASHI, Noriko OSUGA, Jun-ichi OZAKI, Hirotaka KUJIRAI, Setsura KOBAYASHI
-
Publication number: 20180179057Abstract: A hydrogen storage carbon material having a carbon structure suited for hydrogen storage and a production method thereof. The hydrogen storage carbon material according to this embodiment includes a carbon structure which has a ratio of an ultramicropore volume to a micropore volume of 60% or more, and in which stored hydrogen exhibits, in 1H-NMR measurement, a second peak at a position corresponding to a chemical shift of from ?2 ppm to ?20 ppm with respect to a first peak attributed to gaseous hydrogen.Type: ApplicationFiled: June 17, 2016Publication date: June 28, 2018Applicants: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSIT Y, NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY, NISSHINBO HOLDINGS INC.Inventors: Haruo KUMAGAI, Jun-ichi OZAKI, Asao OYA, Takafumi ISHII, Takuya MAIE, Rieko KOBAYASHI, Yasuo IMASHIRO
-
Publication number: 20170194653Abstract: Provided are a carbon catalyst, an electrode, and a battery that exhibit excellent activity. A carbon catalyst according to one embodiment of the present invention has a carbon structure in which area ratios of three peaks fbroad, fmiddle, and fnarrow obtained by separating a peak in the vicinity of a diffraction angle of 26° in an X-ray diffraction pattern obtained by powder X-ray diffraction satisfy the following conditions (a) to (c): (a) fbroad: 75% or more and 96% or less; (b) fmiddle: 3.2% or more and 15% or less; and (c) fnarrow: 0.4% or more and 15% or less.Type: ApplicationFiled: November 30, 2015Publication date: July 6, 2017Applicants: NISSHINBO HOLDINGS INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Yasuo IMASHIRO, Takeaki KISHIMOTO, Tetsutaro SATO, Jun-ichi OZAKI, Takuya MAIE, Sayaka KUSADOKORO
-
Patent number: 9397347Abstract: An electrode for use in a fuel cell comprises a flexible carbon-fiber nonwoven fabric and a fuel cell catalyst, such as a metal catalyst or a carbon alloy catalyst, supported on the surfaces of the carbon fibers constituting the flexible carbon-fiber nonwoven fabric. The flexible carbon-fiber nonwoven fabric is formed by carbonizing a nonwoven fabric obtained by electrospinning a composition containing: an electrospinnable macromolecular substance; an organic compound that is different from the macromolecular substance; and a transition metal. This structure allows the provision of an electrode, for use in a fuel cell, which uses a flexible carbon-fiber nonwoven fabric as a substrate and combines the functions of a gas-diffusion layer and an electrocatalyst layer.Type: GrantFiled: July 21, 2011Date of Patent: July 19, 2016Assignees: NISSHINBO HOLDINGS INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Naokazu Sasaki, Katsuyuki Matsubayashi, Kyosuke Iida, Yasuo Imashiro, Jun-ichi Ozaki
-
Publication number: 20160104900Abstract: A porous carbon catalyst exhibiting excellent catalytic activity and a method of producing the same, and an electrode and a battery. The porous carbon catalyst is obtained through carbonization of an organic polymer porous body having a skeleton containing a metal in an inside thereof. The porous carbon catalyst may have a skeleton containing the metal in an inside thereof, and the skeleton may be a particle aggregate-like skeleton. The method of producing a porous carbon catalyst includes carbonizing an organic polymer porous body having a skeleton containing a metal in an inside thereof.Type: ApplicationFiled: June 4, 2014Publication date: April 14, 2016Applicant: NISSHINBO HOLDINGS INC.Inventors: Yasuo IMASHIRO, Yuji KUBOTA, Akiko TAIRA
-
Patent number: 9090995Abstract: Disclosed is an antibacterial nanofiber which comprises a polymer having an electron-withdrawing group and/or an electron-withdrawing atomic group and has an average fiber diameter of not less than 1 nm and less than 1000 nm, wherein the ratio of the binding energy of the minimum unit of the polymer at 25° C. to the binding energy of the electron-withdrawing group and/or the electron-withdrawing atomic group contained in the minimum unit of the polymer at 25° C. is 0.13 or greater. The nanofiber has an antibacterial activity by itself, and therefore can exhibit an antibacterial activity without the need of adding any antibacterial agent.Type: GrantFiled: November 26, 2012Date of Patent: July 28, 2015Assignee: NISSHINBO HOLDINGS, INC.Inventors: Yasuo Imashiro, Naokazu Sasaki, Yukiko Ogushi, Mami Iizuka
-
Publication number: 20130122391Abstract: The disclosed electrode for use in a fuel cell comprises a flexible carbon-fiber nonwoven fabric and a fuel-cell catalyst, such as a metal catalyst or a carbon-alloy catalyst, supported on the surfaces of the carbon fibers constituting the flexible carbon-fiber nonwoven fabric. Said flexible carbon-fiber nonwoven fabric is formed by carbonizing a nonwoven fabric obtained by electrospinning a composition containing: an electrospinnable macromolecular substance; an organic compound that is different from said macromolecular substance; and a transition metal. This structure allows the provision of an electrode, for use in a fuel cell, which uses a flexible carbon-fiber nonwoven fabric as a substrate and combines the functions of a gas-diffusion layer and an electrocatalyst layer.Type: ApplicationFiled: July 21, 2011Publication date: May 16, 2013Applicants: NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY, NISSHINBO HOLDINGS, INC.Inventors: Naokazu Sasaki, Katsuyuki Matsubayashi, Kyosuke Iida, Yasuo Imashiro, Jun-ichi Ozaki
-
Publication number: 20110232653Abstract: An antimicrobial, dustproof fabric includes a textile material layer which is composed of microfibers with an average fiber diameter of from 1 to 100 ?m and contains an inorganic porous substance, and a nanofiber nonwoven fabric layer which is laminated on the textile material layer and has an average fiber diameter of at least 1 nm but less than 1,000 nm. Hygienic products such as masks obtained using the fabric efficiently block microbes such as viruses, and inactivate or destroy the captured microbes.Type: ApplicationFiled: January 31, 2008Publication date: September 29, 2011Applicant: NISSHINBO INDUSTRIES, INC.Inventors: Yasuo Imashiro, Naokazu Sasaki, Yukiko Ogushi, Mami Iizuka
-
Publication number: 20100120315Abstract: Disclosed is an antibacterial nanofiber which comprises a polymer having an electron-withdrawing group and/or an electron-withdrawing atomic group and has an average fiber diameter of not less than 1 nm and less than 1000 nm, wherein the ratio of the binding energy of the minimum unit of the polymer at 25° C. to the binding energy of the electron-withdrawing group and/or the electron-withdrawing atomic group contained in the minimum unit of the polymer at 25° C. is 0.13 or greater. The nanofiber has an antibacterial activity by itself, and therefore can exhibit an antibacterial activity without the need of adding any antibacterial agent.Type: ApplicationFiled: March 27, 2008Publication date: May 13, 2010Applicant: NISSHINBO INDUSTRIES, INC.Inventors: Yasuo Imashiro, Naokazu Sasaki, Yukiko Ogushi, Mami Iizuka
-
Patent number: 6803139Abstract: Disclosed herein are an electrically conductive resinous composition composed mainly of an electrically conductive carbon powder and a binding agent, wherein said binding agent is a mixture of a thermoplastic resin and a carbodiimide compound, a fuel cell separator and a process for production thereof, and polymer electrolyte fuel cell. The present invention permits efficient mass production of fuel cell separators having high elasticity, good releasability, good dimensional accuracy, and good gas impermeability. The polymer electrolyte fuel cell, in which all or part of separators are those pertaining to the present invention, is immune to the cracking of separators at the time of assembling, decreases only a little in output after continuous operation, and exhibits good gas sealing performance and high impact resistance.Type: GrantFiled: July 3, 2001Date of Patent: October 12, 2004Assignee: Nisshinbo Industries, Inc.Inventors: Kazuo Saito, Atsushi Hagiwara, Yasuo Imashiro, Naofumi Horie, Fumio Tanno, Tsutomu Uehara
-
Patent number: 6607817Abstract: A melamine resin foam endowed with excellent oil repellency and which is improved in fragility without deteriorating the superior properties inherently possessed by melamine resin foams. The melamine resin foam with excellent oil repellency is obtained by coating an oleophobic component on a base material produced by foaming a resin composition comprising, as the main components, a melamine-formaldehyde condensate and a foaming agent.Type: GrantFiled: April 4, 2000Date of Patent: August 19, 2003Assignee: Nisshinbo Industries, Inc.Inventors: Yasuo Imashiro, Shun Hasegawa, Takahiko Matsumoto
-
Patent number: 6524711Abstract: A thermosetting resin composition comprising: a polycarbodiimide obtained from organic polyisocyanates containing at least one kind of aromatic polyisocyanate, an epoxy resin, a curing agent for epoxy resin, and a rubber component, wherein the proportions of the individual components are 100 parts by weight of the polycarbodiimide, 30 to 150 parts by weight of the epoxy resin, 1.0 equivalent or less, relative to the epoxy resin, of the curing agent for epoxy resin, and 0.1 to 20 parts by weight of the rubber component which is, in a semi-cured state (a B-stage), free from resin cracking or powder detaching when bent and therefore easy to handle and, after curing, has good electrical properties and heat resistance.Type: GrantFiled: September 17, 2001Date of Patent: February 25, 2003Assignee: Nisshinbo Industries, Inc.Inventors: Yasuo Imashiro, Takahiko Ito, Hideshi Tomita, Norimasa Nakamura