Patents by Inventor Takumi Shirataki

Takumi Shirataki 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 preventing and treating dry spots
    Patent number: 5921023
    Abstract: A method of preventing and treating dry spots on the grass surface of a golf course comprising the sprinkling of a mixture of a nonionic surfactant and a water soluble polymer on the grass surface. The development of dry spots on the grass surface of a golf course can be prevented and also already developed dry spots can be treated and reduced by this method.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: July 13, 1999
    Assignee: Shin-Etsu Company, Ltd.
    Inventors: Kinya Ogawa, Kenichi Taguchi, Takumi Shirataki
  • Method for improvement and prevention of dry spots
    Patent number: 5731268
    Abstract: A method for improvement (treatment) and prevention of dry spots on the grass surface of a golf course comprising sprinkling of an acetylene alcohol derivative (s) or sprinkling of it along with a water soluble polymer water retentive agent on the grass surface. Also, a method for prevention of dry spots on the grass surface of a golf course comprising sprinkling of a water soluble polymer water retentive agent(s) on the grass surface.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: March 24, 1998
    Assignee: Shin-EtsuChemical Co., Ltd.
    Inventors: Kenichi Taguchi, Takumi Shirataki, Kinya Ogawa, Kouji Kinoshita