Patents by Inventor Katsuhide Okimi

Katsuhide Okimi 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).

  • Iron-carbon composite, carbonaceous material comprising said iron-carbon composite and process for preparing the same
    Patent number: 6916434
    Abstract: Disclosed are an iron-carbon composite in which 10 to 90% of the internal space of a nanoflake carbon tube or a nested multi-walled carbon nanotube is filled with iron carbide or iron; a carbonaceous material containing such iron-carbon composites; and a process for preparing the same. The iron-carbon composite is useful for electron emitting materials and other applications.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: July 12, 2005
    Assignee: Osaka Gas Company Limited
    Inventors: Hitoshi Nishino, Haruyuki Nakaoka, Katsuhide Okimi, Ryoichi Nishida, Takeo Matsui
  • Manufacturing method for a carbon nanomaterial, a manufacturing apparatus for a carbon nanomaterial, and manufacturing facility for a carbon nanomaterial
    Patent number: 6905544
    Abstract: The invention has as an object proving a carbon nanomaterial fabrication method that can continuously mass-produce a high purity carbon a nanomaterial. The tube-shaped or fiber-shaped carbon nanomaterial having carbon as the main constituent is fabricated with a compound that includes carbon (raw material) and an additive that includes a metal by using a fluidized bed reactor.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: June 14, 2005
    Assignees: Mitsubishi Heavy Industries, Ltd., Osaka Gas Co., Ltd.
    Inventors: Toshihiko Setoguchi, Yuichi Fujioka, Yoshihiko Tsuchiyama, Akinori Yasutake, Matsuhei Noda, Norihisa Kobayashi, Ryoichi Nishida, Hitoshi Nishino, Katsuhide Okimi, Akihiro Hachiya
  • Iron-carbon composite, carbonaceous material comprising said iron-carbon composite and process for preparing the same
    Publication number: 20050042160
    Abstract: Disclosed are an iron-carbon composite in which 10 to 90% of the internal space of a nanoflake carbon tube or a nested multi-walled carbon nanotube is filled with iron carbide or iron; a carbonaceous material containing such iron-carbon composites; and a process for preparing the same. The iron-carbon composite is useful for electron emitting materials and other applications.
    Type: Application
    Filed: October 4, 2004
    Publication date: February 24, 2005
    Applicant: Osaka Gas Company Limited
    Inventors: Hitoshi Nishino, Haruyuki Nakaoka, Katsuhide Okimi, Ryoichi Nishida, Takeo Matsui
  • Iron-carbon composite, carbonaceous material comprising said iron-carbon composite and process for preparing the same
    Patent number: 6835330
    Abstract: Disclosed are an iron-carbon composite in which 10 to 90% of the internal space of a nanoflake carbon tube or a nested multi-walled carbon nanotube is filled with iron carbide or iron; a carbonaceous material containing such iron-carbon composites; and a process for preparing the same. The iron-carbon composite is useful for electron emitting materials and other applications.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: December 28, 2004
    Assignee: Osaka Gas Company Limited
    Inventors: Hitoshi Nishino, Haruyuki Nakaoka, Katsuhide Okimi, Ryoichi Nishida, Takeo Matsui
  • Manufacturing method for a carbon nanomaterial, a manufacturing apparatus for a carbon nanomaterial, and manufacturing facility for a carbon nanomaterial
    Publication number: 20040000697
    Abstract: The invention has as an object proving a carbon nanomaterial fabrication method that can continuously mass-produce a high purity carbon nanomaterial. The tube-shaped or fiber-shaped carbon nanomaterial having carbon as the main constituent is fabricated with a compound that includes carbon (raw material) and an additive that includes a metal by using a fluidized bed reactor.
    Type: Application
    Filed: February 21, 2003
    Publication date: January 1, 2004
    Inventors: Toshihiko Setoguchi, Yuichi Fujioka, Yoshihiko Tsuchiyama, Akinori Yasutake, Matsuhei Noda, Norihisa Kobayashi, Ryoichi Nishida, Hitoshi Nishino, Katsuhide Okimi, Akihiro Hachiya
  • Iron-carbon composite, carbonaceous material comprising said iron-carbon composite and process for preparing the same
    Publication number: 20030175462
    Abstract: Disclosed are an iron-carbon composite in which 10 to 90% of the internal space of a nanoflake carbon tube or a nested multi-walled carbon nanotube is filled with iron carbide or iron; a carbonaceous material containing such iron-carbon composites; and a process for preparing the same. The iron-carbon composite is useful for electron emitting materials and other applications.
    Type: Application
    Filed: August 6, 2002
    Publication date: September 18, 2003
    Applicant: Osaka Gas Company Limited
    Inventors: Hitoshi Nishino, Haruyuki Nakaoka, Katsuhide Okimi, Ryoichi Nishida, Takeo Matsui
  • Method of preparing a fluorene derivative and the method of purifying thereof
    Patent number: 5629456
    Abstract: A fluorene derivative of high purity is produced by reacting fluorenone with phenoxyethanol in the presence of a sulfuric acid-thiol catalyst system, dissolving the reaction mixture in a lower aliphatic alcohol and adding water to the resulting solution for precipitation of 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene [fluorene derivative]. A fluorene derivative of still higher purity is obtained by recrystallization from a lower aliphatic alcohol.In accordance with this invention, a fluorene derivative can be produced advantageously on a commercial scale without incurring any appreciable loss of fluorenone, in good yield, with high efficiency and in a reduced production time.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: May 13, 1997
    Assignee: Osaka Gas Company Limited
    Inventors: Mitsuaki Yamada, Katsuhide Okimi, Katsuyuki Takahashi, Norio Nagano