Patents by Inventor Hiroshi Shioyama

Hiroshi Shioyama 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).

  • Carbon-containing solid acid having sulfonate group
    Patent number: 10493439
    Abstract: [Problem] The main purpose is to provide a novel carbon-containing solid acid which has an excellent catalytic activity and of which the catalytic activity cannot be deteriorated easily even when used repeatedly. [Solution] A carbon-containing solid acid which comprises a carbonaceous material having a sulfonate group, wherein the carbonaceous material has a graphene structure in at least a part thereof and contains boron.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: December 3, 2019
    Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, NISSAN CHMICAL INDUSTRIES, LTD.
    Inventors: Hiroshi Shioyama, Hiroaki Sakurai, Qiang Xu, Masato Kiuchi, Yutaka Kimura
  • CARBON-CONTAINING SOLID ACID HAVING SULFONATE GROUP
    Publication number: 20160151766
    Abstract: [Problem] The main purpose is to provide a novel carbon-containing solid acid which has an excellent catalytic activity and of which the catalytic activity cannot be deteriorated easily even when used repeatedly. [Solution] A carbon-containing solid acid which comprises a carbonaceous material having a sulfonate group, wherein the carbonaceous material has a graphene structure in at least a part thereof and contains boron.
    Type: Application
    Filed: June 27, 2014
    Publication date: June 2, 2016
    Inventors: Hiroshi SHIOYAMA, Hiroaki SAKURAI, Qiang XU, Masato KIUCHI, Yutaka KIMURA
  • High-performance C/C composite
    Patent number: 5306563
    Abstract: A C/C composite including a carbon matrix and carbon fibers and exhibiting a crystal structure of the carbon matrix differing between (a) the portion at and in the vicinity of the interface between the carbon fibers and the carbon matrix and (b) the other portion of the carbon matrix and excelling in strength and thermal conductivity is produced by a method which includes intercalating a carbonizing catalyst in carbon fibers, causing said carbon fibers having said carbonizing catalyst intercalated therein to be impregnated with a precursor of a carbon matrix, and then firing the product of impregnation.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: April 26, 1994
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Hiroshi Shioyama, Isao Souma, Kuniaki Tatsumi, Masaki Narisawa
  • Method for production of high-performance C/C composites
    Patent number: 5215689
    Abstract: A C/C composite including a carbon matrix and carbon fibers and exhibiting a crystal structure of the carbon matrix differing between (a) the portion at and in the vicinity of the interface between the carbon fibers and the carbon matrix and (b) the other portion of the carbon matrix and excelling in strength and thermal conductivity is produced by a method which includes intercalating a carbonizing catalyst in carbon fibers, causing said carbon fibers having said carbonizing catalyst intercalated therein to be impregnated with a precursor of a carbon matrix, and then firing the product of impregnation.
    Type: Grant
    Filed: March 5, 1991
    Date of Patent: June 1, 1993
    Assignee: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Hiroshi Shioyama, Isao Souma, Kuniaki Tatsumi, Masaki Narisawa