Patents by Inventor Tohru Turuhara

Tohru Turuhara 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).

  • Nigrosine compound, resin composition, molded product, crystallization temperature lowering, fluidity improving and surface gloss improving method
    Patent number: 6395809
    Abstract: Water-insoluble nigrosine compound which is a salt of nigrosine with sulfuric acid and/or phosphoric acid, crystalline resin composition containing the nigrosine compound, and fiber-reinforced crystalline resin molded product comprising a crystalline resin and a fibrous reinforcing material and the nigrosine compound both contained therein, wherein the surface gloss is higher than that of the fiber-reinforced crystalline resin molded product with nigrosine as a substitute for said nigrosine compound. Methods for lowering the crystallization temperature of a crystalline resin, improving the fluidity of a crystalline resin, and improving the surface gloss of a crystalline resin, by incorporating the water-insoluble nigrosine in the crystalline resin respectively.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: May 28, 2002
    Assignee: Orient Chemical Industries, Ltd.
    Inventors: Akihiko Hayashi, Tohru Turuhara