Patents by Inventor Hiroo Ohuchi

Hiroo Ohuchi 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 dewaxing a vegetable oil
    Patent number: 4545940
    Abstract: A method of dewaxing a vegetable oil which comprises adjusting the temperature of a vegetable oil containing a wax to allow the wax to crystallize and subjecting the temperature-adjusted oil to filtration by means of a porous membrane having a critical surface tension (.gamma.c) of less than 33 dynes/cm and having an average pore diameter of 0.05 to 5 .mu.m, thereby selectively permeating the vegetable oil through the membrane while separating the wax from the vegetable oil. The process of the present invention is useful not only for dewaxing a vegetable oil but also for removing a wax together with a phospholipid, a free fatty acid and water from a crude vegetable oil.
    Type: Grant
    Filed: March 31, 1983
    Date of Patent: October 8, 1985
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Yoshihiko Mutoh, Kazuo Matsuda, Masashi Ohshima, Hiroo Ohuchi