Patents by Inventor Shyusei Ohya
Shyusei Ohya 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).
-
Publication number: 20220340878Abstract: The present invention relates to a cell preparation method that includes a step in which cells are applied to a polyimide porous film and cultivated, wherein the polyimide porous film is a polyimide porous film with a three-layer structure, having a surface layer A and a surface layer B that have a plurality of holes, and a macrovoid layer that is sandwiched between the surface layer A and the surface layer B, and the polyimide porous film is produced by a method including the following steps: (1) a step in which a poly(amic acid) solution comprising poly(amic acid) and an organic polar solvent is flow cast in a film shape and the result is immersed in or brought into contact with a coagulation medium to create a porous film of poly(amic acid); and (2) a step in which the porous film of poly(amic acid) obtained in step (1) is heat-treated and imidized.Type: ApplicationFiled: June 27, 2022Publication date: October 27, 2022Inventors: Masahiko HAGIHARA, Shyusei OHYA
-
Publication number: 20190249146Abstract: The present invention relates to a cell preparation method that includes a step in which cells are applied to a polyimide porous film and cultivated, wherein the polyimide porous film is a polyimide porous film with a three-layer structure, having a surface layer A and a surface layer B that have a plurality of holes, and a macrovoid layer that is sandwiched between the surface layer A and the surface layer B, and the polyimide porous film is produced by a method including the following steps: (1) a step in which a poly(amic acid) solution comprising poly(amic acid) and an organic polar solvent is flow cast in a film shape and the result is immersed in or brought into contact with a coagulation medium to create a porous film of poly(amic acid); and (2) a step in which the porous film of poly(amic acid) obtained in step (1) is heat-treated and imidized.Type: ApplicationFiled: July 25, 2017Publication date: August 15, 2019Inventors: Masahiko HAGIHARA, Shyusei OHYA
-
Patent number: 9902824Abstract: Disclosed is a process for production of a colored polyimide molded article including the steps of molding a polyamic acid solution composition containing a polyamic acid solution obtained from at least a tetracarboxylic acid component and a diamine component and a coloring precursor, or a polyimide solution composition containing a polyimide solution and a coloring precursor; and then thermally treating a molded product at 250° C. or higher.Type: GrantFiled: April 8, 2016Date of Patent: February 27, 2018Assignee: UBE INDUSTRIES, LTD.Inventors: Shyusei Ohya, Makoto Matsuo
-
Publication number: 20160221279Abstract: Disclosed is a process for production of a colored polyimide molded article including the steps of molding a polyamic acid solution composition containing a polyamic acid solution obtained from at least a tetracarboxylic acid component and a diamine component and a coloring precursor, or a polyimide solution composition containing a polyimide solution and a coloring precursor; and then thermally treating a molded product at 250° C. or higher.Type: ApplicationFiled: April 8, 2016Publication date: August 4, 2016Applicant: UBE INDUSTRIES, LTD.Inventors: Shyusei OHYA, Makoto Matsuo
-
Patent number: 9346927Abstract: Disclosed is a process for production of a colored polyimide molded article including the steps of molding a polyamic acid solution composition containing a polyamic acid solution obtained from at least a tetracarboxylic acid component and a diamine component and a coloring precursor, or a polyimide solution composition containing a polyimide solution and a coloring precursor; and then thermally treating a molded product at 250° C. or higher.Type: GrantFiled: October 8, 2010Date of Patent: May 24, 2016Assignee: UBE INDUSTRIES, LTD.Inventors: Shyusei Ohya, Makoto Matsuo
-
Patent number: 8980421Abstract: A porous polyimide film having a three-layer structure that comprises two surface layers (a) and (b) and a macrovoid layer sandwiched between the surfaces layers (a) and (b). The macrovoid layer has a partition wall bonding to the surface layers (a) and (b), and multiple macrovoids each surrounded by the partition wall and the surface layers (a) and (b) and having a mean pore size in the film plane direction of from 10 to 500 ?m. The partition wall of the macrovoid layer has a thickness of from 0.1 to 50 ?m and has multiple pores having a mean pore size of from 0.01 to 50 ?m. The surface layers (a) and (b) each have a thickness of from 0.1 to 50 ?m, at least one of the surface layers has multiple pores having a mean pore size of from more than 5 ?m to 200 ?m, and the other surface layer has multiple pores having a mean pore size of from 0.01 to 200 ?m.Type: GrantFiled: April 4, 2011Date of Patent: March 17, 2015Assignee: Ube Industries, Ltd.Inventors: Shyusei Ohya, Hiroshi Shimazaki, Makoto Babazono, Yoshiaki Watanabe, Dai Yokoyama, Yuuichi Fujii, Makoto Matsuo
-
Patent number: 8420211Abstract: Disclosed is a porous polyimide membrane of a three-layer structure having two surface layers (a) and (b) and a macrovoid layer interposed between the surface layers (a) and (b), wherein the macrovoid layer has a partition wall joined to the surface layers (a) and (b) and plural macrovoids surrounded by the partition wall and the surface layers (a) and (b), with an average void diameter in a membrane plane direction of from 10 to 500 ?m; each of the partition wall of the macrovoid layer and the surface layers (a) and (b) has a thickness of from 0.1 to 50 ?m and has plural pores having an average pore diameter of from 0.01 to 5 ?m, the pores being communicated with each other and also communicated with the macrovoids; and the membrane has a total membrane thickness of from 5 to 500 ?m and a porosity of from 70 to 95%.Type: GrantFiled: October 2, 2009Date of Patent: April 16, 2013Assignee: Ube Industries, Ltd.Inventors: Shyusei Ohya, Makoto Matsuo
-
Publication number: 20130045355Abstract: A porous polyimide film having a three-layer structure that comprises two surface layers (a) and (b) and a macrovoid layer sandwiched between the surfaces layers (a) and (b). The macrovoid layer has a partition wall bonding to the surface layers (a) and (b), and multiple macrovoids each surrounded by the partition wall and the surface layers (a) and (b) and having a mean pore size in the film plane direction of from 10 to 500 ?m. The partition wall of the macrovoid layer has a thickness of from 0.1 to 50 ?m and has multiple pores having a mean pore size of from 0.01 to 50 ?m. The surface layers (a) and (b) each have a thickness of from 0.1 to 50 ?m, at least one of the surface layers has multiple pores having a mean pore size of from more than 5 ?m to 200 ?m, and the other surface layer has multiple pores having a mean pore size of from 0.01 to 200 ?m.Type: ApplicationFiled: April 4, 2011Publication date: February 21, 2013Applicant: UBE INDUSTRIES, LTDInventors: Shyusei Ohya, Hiroshi Shimazaki, Makoto Babazono, Yoshiakia Watanabe, Dai Yokoyama, Yuuichi Fujii, Makoto Matsuo
-
Publication number: 20120207999Abstract: Disclosed is a process for production of a colored polyimide molded article including the steps of molding a polyamic acid solution composition containing a polyamic acid solution obtained from at least a tetracarboxylic acid component and a diamine component and a coloring precursor, or a polyimide solution composition containing a polyimide solution and a coloring precursor; and then thermally treating a molded product at 250° C. or higher.Type: ApplicationFiled: October 8, 2010Publication date: August 16, 2012Applicant: UBE INDUSTRIES, LTD.Inventors: Shyusei Ohya, Makoto Matsuo
-
Publication number: 20110318556Abstract: Disclosed is a porous polyimide membrane of a three-layer structure having two surface layers (a) and (b) and a macrovoid layer interposed between the surface layers (a) and (b), wherein the macrovoid layer has a partition wall joined to the surface layers (a) and (b) and plural macrovoids surrounded by the partition wall and the surface layers (a) and (b), with an average void diameter in a membrane plane direction of from 10 to 500 ?m; each of the partition wall of the macrovoid layer and the surface layers (a) and (b) has a thickness of from 0.1 to 50 ?m and has plural pores having an average pore diameter of from 0.01 to 5 ?m, the pores being communicated with each other and also communicated with the macrovoids; and the membrane has a total membrane thickness of from 5 to 500 ?m and a porosity of from 70 to 95%.Type: ApplicationFiled: October 2, 2009Publication date: December 29, 2011Applicant: UBE INDUSTRIES, LTD.Inventors: Shyusei Ohya, Makoto Matsuo
-
Publication number: 20110263730Abstract: Provided are: a manufacturing method for polymer particles, including: mixing a polymer solution, which is obtained by dissolving a polymer in a good solvent, and a polymer non-solvent, which is a non-solvent for the polymer and has compatibility with the good solvent, in a continuous or intermittent manner; and allowing a mixed solution of the polymer solution and the polymer non-solvent to flow down through a tubular body provided substantially vertically, thereby completing the precipitation of polymer particles; and a manufacturing apparatus for polymer particles. The manufacturing method enables the manufacture of polymer particles which have a relatively narrow particle diameter distribution even when the polymer particles are kept in a dispersion solution state.Type: ApplicationFiled: September 28, 2009Publication date: October 27, 2011Applicant: UBE INDUSTRIES, LTD.Inventors: Tadatoshi Aridomi, Yukihiko Asano, Junya Takahashi, Tatsuya Shoji, Shyusei Ohya
-
Patent number: 7674349Abstract: There is provided a method for continuous production of a functional membrane whereby a functional membrane in which a functional polymer is filled into the micropores of a porous resin sheet can be obtained both continuously and efficiently. The method for continuous production of a functional membrane of the present invention comprises a step for impregnating and depositing a polymer precursor having a functional group on a continuously conveyed porous resin sheet; a polymerization step for continuously feeding and bringing into contact first and second resin films to one side and the other side, respectively, of the precursor-impregnated/deposited sheet comprising the porous resin sheet into which the polymer precursor is impregnated and deposited, and polymerizing the polymer precursor in a state in which the sheet is sandwiched between the two resin films; a film peeling step; and a polymer removal step.Type: GrantFiled: May 12, 2004Date of Patent: March 9, 2010Assignee: Toagosei Co., Ltd.Inventors: Hideki Hiraoka, Kouzou Kubota, Takeo Yamaguchi, Shyusei Ohya, Hiroshi Harada
-
Publication number: 20090192297Abstract: Disclosed is a biological molecule-immobilized carbon membrane which comprises a porous carbon membrane and a biological molecule (e.g., an enzyme) immobilized on the carbon membrane, wherein the porous carbon membrane has three-dimensional cancellous pores through which fluid can permeate. The carbon membrane can have a large amount of a biological molecule (e.g., an enzyme) immobilized thereon and can also have a higher level of enzymatic activity or the like compared to a conventional one. Therefore, the carbon membrane is useful as an electrode for a bio-sensor or a bio-fuel cell.Type: ApplicationFiled: February 2, 2007Publication date: July 30, 2009Applicant: Ube Industries, Ltd.Inventors: Youichi Yoshida, Shinichiro Sadaike, Shyusei Ohya, Kikuo Ataka
-
Patent number: 7468340Abstract: A metal-supported porous carbon film wherein metal fine particles with a mean particle diameter of 0.7-20 nm are dispersed and supported on pore surface walls, fuel cell electrodes employing the metal-supported porous carbon film, a membrane-electrode assembly comprising the fuel cell electrodes bonded on both sides of a polymer electrolyte film, and a fuel cell comprising the fuel cell electrode as a constituent element. The support structure is such that metal fine particles having a controlled particle size are uniformly supported to allow effective utilization of the metal-based catalyst, and the fabrication steps are simple.Type: GrantFiled: April 8, 2004Date of Patent: December 23, 2008Assignee: Ube Industries, Ltd.Inventors: Shyusei Ohya, Yuuichi Fujii, Makoto Matsuo, Jun Takagi
-
Patent number: 7311966Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 ?m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.Type: GrantFiled: September 6, 2006Date of Patent: December 25, 2007Assignee: Ube Industries, Ltd.Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata
-
Patent number: 7303811Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 ?m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.Type: GrantFiled: February 25, 2004Date of Patent: December 4, 2007Assignee: Ube IndustriesInventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata
-
Publication number: 20070275222Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 ?m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.Type: ApplicationFiled: May 23, 2007Publication date: November 29, 2007Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata
-
Publication number: 20070082805Abstract: Disclosed are a carbon porous membranous structure having fine interconnecting pores an average diameter of which is 0.05 to 10 ?m and a porosity of 15 to 85% and a metal-dispersed carbon structure comprising that carbon porous membranous structure having dispersed therein fine particles of at least one kind of a metal and an alloy. The carbon porous membranous structures are useful as a component of fuel cells, particularly as an electrode base material of gas diffusion electrodes for solid polymer electrolyte fuel cells and phosphoric acid fuel cells.Type: ApplicationFiled: December 11, 2006Publication date: April 12, 2007Applicant: UBE INDUSTRIES, LTD.Inventors: Shyusei Ohya, Jun Takagi, Yuuichi Fujii, Shigeru Yao
-
Publication number: 20070077460Abstract: A metal-supported porous carbon film wherein metal fine particles with a mean particle diameter of 0.7-20 nm are dispersed and supported on pore surface walls, fuel cell electrodes employing the metal-supported porous carbon film, a membrane-electrode assembly comprising the fuel cell electrodes bonded on both sides of a polymer electrolyte film, and a fuel cell comprising the fuel cell electrode as a constituent element. The support structure is such that metal fine particles having a controlled particle size are uniformly supported to allow effective utilization of the metal-based catalyst, and the fabrication steps are simple.Type: ApplicationFiled: April 8, 2004Publication date: April 5, 2007Inventors: Shyusei Ohya, Yuuichi Fujii, Makoto Matsuo, Jun Takagi
-
Publication number: 20070059517Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 ?m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.Type: ApplicationFiled: September 6, 2006Publication date: March 15, 2007Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata