Patents by Inventor Masamitsu Kiso

Masamitsu Kiso 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 a hardened product of coal ash
    Patent number: 4622071
    Abstract: A hardened product of coal ash having strength sufficient as a civil engineering or construction material is obtained by treating coal ash with sulfuric acid and/or hydrochloric acid to obtain a first reaction mixture; treating the first reaction mixture with calcium carbonate to obtain a second reaction mixture; mixing the second reaction mixture with a hydraulic material and water to obtain a third reaction mixture; and shaping and curing the third reaction mixture.
    Type: Grant
    Filed: September 28, 1984
    Date of Patent: November 11, 1986
    Assignee: Fuji Fire-Proof Material Industry Co., Ltd.
    Inventors: Sadaji Matsuura, Satoru Ando, Masamitsu Kiso