Patents by Inventor Mitsuo Iizuka

Mitsuo Iizuka 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 of producing organic fertilizer by using fish as raw material
    Patent number: 5393318
    Abstract: A method of producing organic fertilizer by using fish as raw material. The method comprises the steps of boiling the fish to prepare a stock, removing solids and oil contents from the stock to obtain a stock solution, thereafter treating the stock solution in a decomposition tank for enzyme decomposition, and filtering an enzyme-decomposed stock solution to form a clarified liquid. The clarified liquid can be used as a fertilizer as is or further condensed or dried into organic fertilizer without unnecessary components.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: February 28, 1995
    Assignee: Yaizu Meal Kyogyo Kumiai
    Inventors: Mitsuo Iizuka, Shigeki Konishi