Patents by Inventor Sumio Takigawa

Sumio Takigawa 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).

  • Plant culture method and support substrate applied thereto
    Patent number: 5675929
    Abstract: A culture method of growing plants or plant seedlings on a culture medium provided on a support substrate which is comprised of an upper layer made of small stone and activated charcoal integrally solidified by synthetic resin in such a manner as to maintain water permeability therein and a lower layer in the form of a water permeable reinforcement layer integrally formed with the upper layer.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: October 14, 1997
    Assignee: Kabushiki Kaisha Tokai Yukinosan
    Inventors: Cho Sontea, Sumio Takigawa, Ryoichi Ueda