Patents by Inventor Riyuuichi Shimizu

Riyuuichi Shimizu 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).

  • Hot-melt ink composition
    Patent number: 5350789
    Abstract: A hot-melt ink composition for an ink jet printer comprising from 10 to 65% by weight of a polyamide resin, from 5 to 60% by weight of a fatty acid amide, from 5 to 40% by weight of a glyceride, and up to 5% by weight of a colorant. The composition is excellent in transparency to provide a highly transparent ink image on an OHP sheet.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: September 27, 1994
    Assignees: Hitachi Koki Co., Ltd., Hitachi, Ltd.
    Inventors: Akemi Sagawa, Ren Itoh, Masahiko Sakai, Riyuuichi Shimizu