Patents by Inventor Tetuji Kawazura

Tetuji Kawazura 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).

  • Method for manufacturing natural rubber
    Patent number: 8293817
    Abstract: A method for manufacturing natural rubber according to an embodiment of the present technology includes: adding to a natural rubber latex at least one type of a predetermined sulfonic acid selected from the group consisting of a monoalkyl sulfonic acid, a polyoxyethylene alkyl ether sulfonic acid, and an alkylbenzene sulfonic acid; and, thereafter, removing moisture from the mixture of the natural rubber latex and the sulfonic acid.
    Type: Grant
    Filed: December 25, 2009
    Date of Patent: October 23, 2012
    Assignee: The Yokohama Rubber Co. Ltd.
    Inventors: Takashi Matsuda, Makoto Ashiura, Tetuji Kawazura, Keisuke Chino
  • METHOD FOR MANUFACTURING NATURAL RUBBER
    Publication number: 20110269881
    Abstract: A method for manufacturing natural rubber according to an embodiment of the present technology includes: adding to a natural rubber latex at least one type of a predetermined sulfonic acid selected from the group consisting of a monoalkyl sulfonic acid, a polyoxyethylene alkyl ether sulfonic acid, and an alkylbenzene sulfonic acid; and, thereafter, removing moisture from the mixture of the natural rubber latex and the sulfonic acid.
    Type: Application
    Filed: December 25, 2009
    Publication date: November 3, 2011
    Applicant: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Takashi Matsuda, Makoto Ashiura, Tetuji Kawazura, Keisuke Chino