Patents by Inventor Toshihiko Tokai

Toshihiko Tokai 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).

  • Manganese fertilizer
    Patent number: 5749935
    Abstract: Manganese byproducts produced in the course of manufacturing electrolytic manganese dioxide provide a novel manganese fertilizer having a fertilizer response that can operate both instantaneously and slow-release. A manganese fertilizer contains manganese byproducts and has 3 to 20 wt % citric acid-soluble manganese (C--MnO) and 0.5 to 7.0 wt % water-soluble manganese (W--MnO).
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: May 12, 1998
    Assignee: Japan Metals & Chemicals Co., Ltd.
    Inventors: Hisao Takehara, Ryoichi Shimizugawa, Toshihiko Tokai