Patents by Inventor Tomohiko Yamaguchi

Tomohiko Yamaguchi 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).

  • Filler for separating optical isomer
    Patent number: 4842935
    Abstract: A filler for separating an optical isomer comprising a surface-hydrophobic filler component and an optically active lipophilic crown compound carried on the filler component by adsorption. The filler may be charged in a column to carry out separation of a sample such as amino acid or the like in the form of an aqueous solution.
    Type: Grant
    Filed: March 5, 1987
    Date of Patent: June 27, 1989
    Assignee: Director-General Agency of Industrial Science and Technology
    Inventors: Toshio Shinbo, Koichiro Nishimura, Tomohiko Yamaguchi, Masaaki Sugiura
  • Polymeric membrane having maleic anhydride residues
    Patent number: 4407975
    Abstract: A polymeric membrane having maleic anhydride residues which comprises a blend of a maleic anhydride copolymer and a support polymer, said blend being partially cross-linked with a bifunctional cross-linking reagent. When hydrolyzed, this membrane turns into an ion exchange membrane or a membrane on which an enzyme is immobilized.
    Type: Grant
    Filed: February 26, 1982
    Date of Patent: October 4, 1983
    Assignee: Agency of Industrial Science and Technology
    Inventor: Tomohiko Yamaguchi