Patents by Inventor Masuji Yamamoto

Masuji Yamamoto 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).

  • Thermal transfer ink and thermal transfer element using the same
    Patent number: 5421873
    Abstract: A thermal transfer ink comprising a coloring agent and a heat-meltable vehicle containing a wax component, the wax component containing not less than 15% by weight of a wax, the wax being a reaction product obtained by reacting an alcohol mixture of a straight-chain aliphatic primary monohydric alcohol having 10 to 22 carbon atoms and 1 to 50% by mole, on the basis of the amount of the alcohol mixture, of an aliphatic polyhydric alcohol with tolylene diisocyanate in a ratio of NCO/OH=0.8 to 1.0 by mole. A thermal transfer element is also disclosed wherein on a support is provided a thermal transfer ink layer formed from the thermal transfer ink by a solvent coating method.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: June 6, 1995
    Assignee: Fujicopian Co., Ltd.
    Inventors: Takao Arimura, Toshihiko Negoro, Hiroshi Matsumoto, Ken-ichi Okada, Masuji Yamamoto