Patents by Inventor Tutomu Sakaida

Tutomu Sakaida 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).

  • Electrode and method of producing the same
    Patent number: 5225296
    Abstract: An electrode comprises a porous carbon sheet comprising (a) carbon fibers and (b) a carbon matrix which comprises carbon particles and is integrally combined with the carbon fibers, having continuous through-holes. This electrode can be used as a cathode or anode for a battery. This type of electrode is prepared by depositing a phenolic resin on a phenolic resin sheet comprising phenolic resin fibers, and carbonizing the phenolic resin and the phenolic resin sheet in an oxygen-free atmosphere at temperatures in the range of 500.degree. C. to 3000.degree. C.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: July 6, 1993
    Assignees: Ricoh Company, Ltd., Unitika, Ltd.
    Inventors: Toshiyuki Ohsawa, Toshiyuki Kabata, Yoshiaki Echigo, Tutomu Sakaida, Keiichi Asami