Patents by Inventor Isao Kokubo

Isao Kokubo 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).

  • Cement additive
    Patent number: 4345944
    Abstract: An additive for cement comprising a granular molded product formed of a water-reducing agent composed mainly of a naphthalenesulfonic acid/formaldehyde high condensate (NSF) or salt thereof, and a carrier.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: August 24, 1982
    Assignee: Kao Soap Co., Ltd.
    Inventors: Yoshiteru Kazama, Isao Kokubo, Akitoshi Tsuji, Yukio Tanino
  • Process for continuous refining of oils and fats
    Patent number: 4275012
    Abstract: In a process for continuous refining of oils and fats, starting oils and fats and a lower alcohol containing 0.06 to 0.15 wt. %, based on the starting oils and fats, of an acid catalyst are continuously fed into a multi-stage reaction tank equipped with a stirrer and prevented from the back mixing, then the oils and fats are refined at 67.degree. C. or below, the refined oils and fats are continuously taken out together with an excess of the lower alcohol containing the acid catalyst, they are separated into the oil and fat layer and the lower alcohol layer, and most of the lower alcohol layer is recycled into the reaction tank.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: June 23, 1981
    Assignee: Kao Soap Co., Ltd.
    Inventors: Isao Kokubo, Yoshiharu Kawahara