Patents by Inventor Kazuyoshi Wakimoto

Kazuyoshi Wakimoto 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).

  • Process for producing iron oxide products from waste liquids containing ferrous salts
    Patent number: 3970738
    Abstract: The processes for producing iron oxide products from a solution of ferrous salts selected from the group consisting of waste liquid containing ferrous salts and aqueous solution in which ferrous salts obtained from the waste liquid are dissolved, under the acid, wet and high ferrous concentration conditions. More particularly, the processes for purifying said waste liquids comprising the bivalent iron removing steps.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: July 20, 1976
    Assignee: Toda Kogyo Corporation
    Inventors: Goro Matsui, Koji Toda, Nanao Horiishi, Kazuyoshi Wakimoto, Yoshifumi Nishiyama, Tsuneyoshi Taketa, Kazushi Takama