Patents by Inventor Michio Yokouchi

Michio Yokouchi 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).

  • Packing material for column and process for production thereof
    Patent number: 5672422
    Abstract: A packing material for a column comprises a porous support coated with silicone polymer having an Si--R bond, wherein R is a hydrophobic group and an Si--R' bond, wherein R' is a hydrophilic group, and a process for the production thereof.
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: September 30, 1997
    Assignee: Shiseido Company Ltd.
    Inventors: Taketoshi Kanda, Atsuo Sakamoto, Michio Yokouchi, Yutaka Ohtsu