Patents by Inventor Todatoshi Ota, deceased

Todatoshi Ota, deceased 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).

  • Organic polymer ferromagnetic material and process for preparing polymer
    Patent number: 5247054
    Abstract: An organic polymer ferromagnetic material characterized in that the material comprises a polymer obtained by subjecting to plasma polymerization or oxidation polymerization a methane derivative having two substituents and represented by the formula ##STR1## wherein A is an electron accepting group, and B is an electron donating group, or by copolymerizing the methane derivative with a diarylmethane derivative represented by the formula ##STR2## wherein R.sup.1 is a substituted or unsubstituted phenyl group by plasma polymerization or oxidation polymerization.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: September 21, 1993
    Assignee: Otsuka Kagaku Kabushiki Kaisha
    Inventors: Hitoshi Tanaka, Tsuneyuki Sato, Todatoshi Ota, deceased, Michio Sasaoka