Patents by Inventor Hidenaga Ouchi

Hidenaga Ouchi 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).

  • Anion exchange resin of surface functional type and the process for producing the same
    Patent number: 4495250
    Abstract: A present invention relates to an anion exchange resin of surface functional type and the process for producing the same. The anion exchange resin of the present invention has anion exchange groups only in a linear polymer layer coated on the surface of a lipophilic crosslinked polymer matrix, and ion exchange reaction of the present anion exchange resin proceeds rapidly. Accordingly, the anion exchange resin of the present invention is useful for a packing for ion exchange chromatography.
    Type: Grant
    Filed: August 16, 1983
    Date of Patent: January 22, 1985
    Assignee: Mitsubishi Chemical Industries, Limited
    Inventors: Takaharu Itagaki, Hidenaga Ouchi, Akihiro Shimura
  • Weakly acidic cation exchange resin and process for producing same
    Patent number: 4350773
    Abstract: A weakly acidic cation exchange resin which is obtainable by a reaction of glyoxylic acid and a polyvinyl alcohol cross-linked by cross-linking groups each containing two or more carbon atoms, and has an exchange capacity of 3 meq/g or greater and a swelling volume of 10 ml/g or smaller, as well as a process for producing such cation exchange resin.
    Type: Grant
    Filed: July 6, 1981
    Date of Patent: September 21, 1982
    Assignee: Mitsubishi Chemical Industries, Limited
    Inventors: Takaharu Itagaki, Hidenaga Ouchi
  • Weakly acidic cation exchange resin and process for producing same
    Patent number: 4306031
    Abstract: A weakly acidic cation exchange resin which is obtainable by a reaction of glyoxylic acid and a polyvinyl alcohol cross-linked by cross-linking groups each containing two or more carbon atoms, and has an exchange capacity of 3 meq/g or greater and a swelling volume of 10 ml/g or smaller, as well as a process for producing such cation exchange resin.
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: December 15, 1981
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Takaharu Itagaki, Hidenaga Ouchi