Patents by Inventor Kiyomiki Kawanami

Kiyomiki Kawanami 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).

  • Electrically conductive compositions
    Patent number: 4664900
    Abstract: An electrically conductive composition comprises 100 parts by weight of synthetic resin and/or rubber, 5 to 100 parts by weight of a conductivity-affording agent, and 1 to 100 parts by weight of carbon fiber. The agent used is carbon or acetylene black having resistivity of no higher than 0.3 .OMEGA.cm, a hydrochloric acid absorption of 20 to 40 ml/5 g and a specific surface area of 100 to 400 m.sup.2 /g, which is obtained by continuous thermal cracking of acethlene gas by a mixed gas flow of oxygen-containing gas and steam in the presence or absence of unsaturated hydrocarbons.
    Type: Grant
    Filed: March 28, 1985
    Date of Patent: May 12, 1987
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yuji Miyazaki, Akio Nishijima, Kiyomiki Kawanami