Patents by Inventor Kouichi Numata

Kouichi Numata 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).

  • Lithium secondary battery-use active matter
    Publication number: 20040137329
    Abstract: A lithium secondary battery-use active matter containing a material capable of electrochemically desorbing and inserting Li, and having a metallic iron grade in the material of less than 5 ppm; and a lithium secondary battery having this active matter. An iron grade in the material of less than 5 ppm can keep a capacity maintaining factor within a high-value range after specified cycles to improve the performance of a lithium secondary battery.
    Type: Application
    Filed: October 10, 2003
    Publication date: July 15, 2004
    Inventors: Kouichi Numata, Sumihiko Makizoe, Shintaro Ishida
  • Tobacco raw material and method for its production
    Patent number: 5307821
    Abstract: The present invention relates to a method for producing a tobacco raw material having at least a part of its surface coated with a silical gel, which comprises adding silica sol to the tobacco raw material and subjecting the silical gel to gelation.
    Type: Grant
    Filed: April 25, 1991
    Date of Patent: May 3, 1994
    Assignees: Asahi Glass Company Ltd., Japan Tobacco Inc.
    Inventors: Katsutoshi Misuda, Hitoshi Kijimuta, Kouichi Numata, Masaharu Tanaka, Yoshinori Katayama, Iku Tomari, Toshiro Samejima
  • Highly heat resistant glass fiber and process for its production
    Patent number: 5248637
    Abstract: Highly heat resistant glass fiber which comprises from 0.1 to 2.0 wt % of Al.sub.2 O.sub.3, from 0.1 to 2.0 wt % of TiO.sub.2, from 96 to 99.8 wt % of SiO.sub.2 and not more than 0.03 wt % of the sum of alkali metal oxides and alkaline earth metal oxides.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: September 28, 1993
    Assignee: Asahi Glass Company Ltd.
    Inventors: Naoki Taneda, Kouichi Numata, Takashi Mukaiyama