Patents by Inventor Kenro Hattori

Kenro Hattori 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).

  • Process for producing a foam sheet having an embossed pattern
    Patent number: 4302489
    Abstract: According to the process for producing a foam sheet having an embossed pattern of the present invention, a coating containing an aliphatic ketone type solvent as its main ingredient and being incapable by itself of substantially inhibiting decomposition of a blowing agent comprising azodicarbonamide as its main ingredient is printed in the form of a pattern on selected portions of the surface of a foamable polyvinyl chloride resin sheet material containing a specific amine or amines and the blowing agent, and the foamable sheet material subsequently is heated to foam it.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: November 24, 1981
    Assignee: Kohkoku Chemical Industry Co. Ltd.
    Inventors: Kenro Hattori, Takeshi Ogawa, Minoru Ochiai, Takeshi Tomikawa, Takeji Ikeda