Patents by Inventor Kunihiko Yanagihara

Kunihiko Yanagihara 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).

  • High temperature resistant fast soldering wire enamel
    Patent number: 4997891
    Abstract: A solderable polyurethane wire enamel composition comprising a mixture of a blocked isocyanate and polyesterimide resin wherein the ratio of isocyanate groups in the blocked isocyanate to hydroxyl groups in the polyesterimide resin is about 0.82:1 to about 5.7:1 and the hydroxyl to carboxylic acid ratio of the raw materials used in preparing the polyesterimide is about 1.4:1 to about 2.5:1.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: March 5, 1991
    Assignee: Schenectady Chemicals, Inc.
    Inventors: Robert W. Cicero, Tsutomu Iwasaki, Kenneth C. Heckeler, James M. Stanton, Kunihiko Yanagihara