Patents by Inventor Yasushi Kamihisa

Yasushi Kamihisa 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).

  • Biocidal fine powder and a suspension containing the same
    Patent number: 4851421
    Abstract: The invention relates to a biocidal fine powder with increased biocidal activity and an agricultural suspension containing the biocidal fine powder and an adjuvant selected from the group consisting of polyoxyalkylene-type nonionic surface active agents and polyoxyalkylene alkyl or alkylaryl ether phosphates or their salts.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: July 25, 1989
    Assignee: Kao Corporation
    Inventors: Tetsuji Iwasaki, Yasushi Kamihisa
  • Biocidal fine powder, its manufacturing method and a suspension for agricultural use containing the above powder
    Patent number: 4663364
    Abstract: A biocidal powder having a notably reinforced biological effect contains at least 50 wt % of particles having diameter of 0.5 micron or less.A suspension containing the above powder is prepared by mixing a dispersion liquid which comprises a biocidal substance and a specified dispersing agent such as a polymer of styrene sulfonate with rigid media having particle diameter of 0.5 mm or less.Thus obtained suspension is applicable to germicides, herbicides, insecticides, miticides and the like.
    Type: Grant
    Filed: August 28, 1985
    Date of Patent: May 5, 1987
    Assignee: Kao Corporation
    Inventors: Tetsuji Iwasaki, Yasushi Kamihisa