Patents by Inventor Yasuyoshi Esashi

Yasuyoshi Esashi 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).

  • Rubber-steel cord adhesion promoter
    Patent number: 4609499
    Abstract: A rubber-steel cord adhesion promoter represented by the general formula ##STR1## wherein Y.sub.1, Y.sub.2 and Y.sub.3 are identical or different and each represents a resin acid radical, a naphthenic acid radical or an aliphatic monocarboxylic acid radical having 7 to 24 carbon atoms provided that Y.sub.1, Y.sub.2 and Y.sub.3 are not simultaneously aliphatic monocarboxylic acid radicals having 7 to 15, particularly 7 to 11, carbon atoms. The promoter aids in imparting a high rubber-to-steel cord adhesive strength which is retained for an extended period of time even at high temperature and humidity.
    Type: Grant
    Filed: January 25, 1985
    Date of Patent: September 2, 1986
    Assignee: Daninippon Ink and Chemicals, Inc.
    Inventors: Yasuyoshi Esashi, Fumiaki Yoneyama, Yoshihisa Ogihara