Patents by Inventor Osao Ise

Osao Ise 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).

  • Watercolor ink
    Patent number: 4985077
    Abstract: A watercolor ink contains a water-soluble dye, water, and at least one benzyl ether represented by the general formulas ##STR1## (wherein n.sub.1 stands for an integer of 3 to 15) and ##STR2## (wherein m stands for an integer of 1 to 15 and n.sub.2 for 0 or an integer of 1 to 14, providing that 1.ltoreq.m+n.sub.2 .ltoreq.15 is satisfied).
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: January 15, 1991
    Assignee: Taiho Industries Co., Ltd.
    Inventors: Osao Ise, Hideto Kanazawa, Masahiko Ishida