Patents by Inventor Tetusya Imamura

Tetusya Imamura 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).

  • Magnetic recording medium
    Patent number: 4529649
    Abstract: A magnetic recording medium excellent in magnetic properties and durability is provided which is characterized by containing magnetic powder coated with a reaction product between an aminosilane coupling agent and at least one compound selected from the group consisting of an acid anhydride of 6 to 22 carbon atoms and an alkylketene dimer. A magnetic paint containing said coated magnetic powder has good dispersibility of the magnetic powder and provides improved adhesion between the magnetic powder and a binder.
    Type: Grant
    Filed: October 18, 1983
    Date of Patent: July 16, 1985
    Assignee: Kao Corporation
    Inventors: Takashi Takeuchi, Shoji Kobayashi, Tsuyoshi Ohtani, Tetusya Imamura