Patents by Inventor Takene Hirai
Takene Hirai 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: 9570754Abstract: To provide an NiO-GDC composite powder or NiO-SDC composite powder having a uniform composition, which is suitable as an anode material for a solid oxide fuel cell. A process for producing an anode material for a solid oxide fuel cell, made of a composite powder comprising a composite oxide containing cerium element and gadolinium or samarium element, and oxygen element, and an oxide containing nickel element and oxygen element, which comprises a dissolving step of mixing raw material compounds containing metal elements constituting the above composite powder, at least one organic acid selected from the group consisting of maleic acid, lactic acid and malic acid, and a solvent to obtain a metal elements-containing solution, and a drying/sintering step of drying and sintering the metal elements-containing solution.Type: GrantFiled: January 28, 2015Date of Patent: February 14, 2017Assignee: AGC SEIMI CHEMICAL CO., LTD.Inventors: Futoshi Nada, Takene Hirai
-
Patent number: 9412486Abstract: To provide a composite oxide powder for a solid oxide fuel cell containing lanthanum, strontium and/or calcium, manganese and oxygen and having a highly uniform composition, and its production method. A composite oxide powder containing lanthanum, strontium and/or calcium, manganese and oxygen, wherein the coefficient of variation (?) of lanthanum is at most 6.0% and the coefficient of variation (?) of manganese is at most 13.0%, as calculated from the peak area ratio of the L? ray of lanthanum and the K? ray of manganese measured by an energy dispersive X-ray spectrometer attached to a scanning electron microscope.Type: GrantFiled: July 22, 2014Date of Patent: August 9, 2016Assignee: AGC SEIMI CHEMICAL CO., LTD.Inventors: Futoshi Nada, Takene Hirai
-
Patent number: 9379391Abstract: To provide an air electrode material powder for a solid oxide fuel cell, comprising a novel LSCF powder having a highly uniform composition suitable as an air electrode material for a solid oxide fuel cell, and its production process. A composite oxide having a perovskite structure and containing lanthanum, strontium, cobalt, iron and oxide, wherein the dispersion point determined by the peak intensity [La] of the L?1 characteristic X-ray of lanthanum and the peak intensity [Sr] of the L?1 characteristic X-ray of strontium as obtained by EPMA measurement, is present within a range of the formula (1) and the dispersion point determined by the peak intensity [Co] of the K?1 characteristic X-ray of cobalt and the peak intensity [Fe] of the K?1 characteristic X-ray of iron is present within a range of the formula (2): a[La]?150?[Sr]?a[La]+150??(1) b[Co]?300?[Fe]?b[Co]+300??(2) wherein 0.2?a?1.0 and 0.1?b?4.0.Type: GrantFiled: August 4, 2014Date of Patent: June 28, 2016Assignee: AGC SEIMI CHEMICAL CO., LTD.Inventors: Futoshi Nada, Michinori Suehara, Takanori Ito, Takene Hirai
-
Publication number: 20150162621Abstract: To provide an air electrode material powder for a solid oxide fuel cell, comprising a novel LSCF powder having a highly uniform composition suitable as an air electrode material for a solid oxide fuel cell, and its production process. A composite oxide having a perovskite structure and containing lanthanum, strontium, cobalt, iron and oxide, wherein the dispersion point determined by the peak intensity [La] of the L?1 characteristic X-ray of lanthanum and the peak intensity [Sr] of the L?1 characteristic X-ray of strontium as obtained by EPMA measurement, is present within a range of the formula (1) and the dispersion point determined by the peak intensity [Co] of the K?1 characteristic X-ray of cobalt and the peak intensity [Fe] of the K?1 characteristic X-ray of iron is present within a range of the formula (2): a[La]?150?[Sr]?a[La]+150 ??(1) b[Co]?300?[Fe]?b[Co]+300 ??(2) wherein 0.2?a?1.0 and 0.1?b?4.0.Type: ApplicationFiled: February 20, 2013Publication date: June 11, 2015Applicant: AGC SEIMI CHEMICAL CO., LTDInventors: Futoshi Nada, Michinori Suehara, Takanori Ito, Takene Hirai
-
Publication number: 20150140475Abstract: To provide an NiO-GDC composite powder or NiO-SDC composite powder having a uniform composition, which is suitable as an anode material for a solid oxide fuel cell. A process for producing an anode material for a solid oxide fuel cell, made of a composite powder comprising a composite oxide containing cerium element and gadolinium or samarium element, and oxygen element, and an oxide containing nickel element and oxygen element, which comprises a dissolving step of mixing raw material compounds containing metal elements constituting the above composite powder, at least one organic acid selected from the group consisting of maleic acid, lactic acid and malic acid, and a solvent to obtain a metal elements-containing solution, and a drying/sintering step of drying and sintering the metal elements-containing solution.Type: ApplicationFiled: January 28, 2015Publication date: May 21, 2015Applicant: AGC SEIMI CHEMICAL CO., LTD.Inventors: Futoshi NADA, Takene Hirai
-
Publication number: 20150053898Abstract: To provide a composite oxide powder for a solid oxide fuel cell containing lanthanum, strontium and/or calcium, manganese and oxygen and having a highly uniform composition, and its production method. A composite oxide powder containing lanthanum, strontium and/or calcium, manganese and oxygen, wherein the coefficient of variation (?) of lanthanum is at most 6.0% and the coefficient of variation (?) of manganese is at most 13.0%, as calculated from the peak area ratio of the L? ray of lanthanum and the K? ray of manganese measured by an energy dispersive X-ray spectrometer attached to a scanning electron microscope.Type: ApplicationFiled: July 22, 2014Publication date: February 26, 2015Applicant: AGC SEIMI CHEMICAL CO., LTD.Inventors: Futoshi NADA, Takene HIRAI
-
Patent number: 5968426Abstract: The present invention relates to a method for producing a porous silicon nitride sintered body having high strength and low thermal conductivity, which comprises of adding more than 10 volume % of rodlike beta-silicon nitride single crystals with a larger mean diameter than that of a silicon nitride raw powder into a mixture comprising the silicon nitride raw powder and a sintering additive, preparing a formed body with rodlike beta-silicon nitride single crystals oriented parallel to the casting plane according to a forming technique such as sheet casting and extrusion forming, sintering said formed body to develop elongated silicon nitride grains from the added rodlike beta-silicon nitride single crystals as nuclei and obtain the sintered body with the elongated grains being dispersed in a complicated state.Type: GrantFiled: January 29, 1997Date of Patent: October 19, 1999Assignees: Japan as represented by Director General of Agency of Industrial Science and Technology, Fine Ceramics Research AssociationInventors: Kiyoshi Hirao, Manuel E. Brito, Motohiro Toriyama, Syuzo Kanzaki, Hisayuki Imamura, Takene Hirai, Yasuhiro Shigegaki
-
Patent number: 4990544Abstract: Use of a composition comprising a polytetrafluoroethylene resin and a fine inorganic powder for a gasket, said composition being characterized in that the polytetrafluoroethylene resin is at least 5% by weight and the fine inorganic powder is at least 40% by weight, based on the total amount of the polytetrafluoroethylene resin and the fine inorganic powder; the total amount of the polytetrafluoroethylene resin and the fine inorganic powder is at least 80% by weight based on the entire amount of the composition; and the polytetrafluoroethylene resin and the fine inorganic powder are mutually uniformly dispersed and mixed with each other.Type: GrantFiled: May 1, 1989Date of Patent: February 5, 1991Assignee: Nichias CorporationInventors: Hiroshi Asaumi, Zenji Shimura, Takehiro Yoshida, Kenji Tadakuma, Shinzaburo Suzuki, Norio Takada, Kenichi Nakamura, Takene Hirai
-
Patent number: 4839221Abstract: Use of a composition comprising a polytetrafluoroethylene resin and a fine inorganic powder for a gasket, said composition being characterized in that the polytetrafluoroethylene resin is at least 5% by weight and the fine inorganic powder is at least 40% by weight, based on the total amount of the polytetrafluoroethylene resin and the fine inorganic powder; the total amount of the polytetrafluoroethylene resin and the fine inorganic powder is at least 80% by weight based on the entire amount of the composition; and the polytetrafluoroethylene resin and the fine inorganic powder are mutually uniformly dispersed and mixed with each other.Type: GrantFiled: October 9, 1987Date of Patent: June 13, 1989Assignee: Nichias CorporationInventors: Hiroshi Asaumi, Zenji Shimura, Takehiro Yoshida, Kenji Tadakuma, Shinzaburo Suzuki, Norio Takada, Kenichi Nakamura, Takene Hirai