Patents by Inventor Koshiro Toriumi

Koshiro Toriumi 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).

  • Method for producing a carbon filament and derivatives thereof
    Patent number: 4435375
    Abstract: A novel type of carbon filaments grow from a purified graphite material when the purified graphite material is heated in a plasma. The carbon filaments thus obtained can be converted into softer graphite filaments. Both the carbon filaments and the graphite filaments as such are extremely useful due to their excellent mechanical strengths. In addition, from each of them, intercalation compounds with an alkali metal can be obtained, which are useful not only as a highly conductive material but also as a catalyst for various reactions.
    Type: Grant
    Filed: September 4, 1981
    Date of Patent: March 6, 1984
    Assignee: Shohei Tamura
    Inventors: Shohei Tamura, Mizuka Sano, Hiroo Inokuchi, Koshiro Toriumi, Naoki Sato