Patents by Inventor Yasuhiko Kadota

Yasuhiko Kadota 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).

  • Cation-exchanged clay mineral, packing material for chromatography using the same and method of producing the same
    Patent number: 6316647
    Abstract: Disclosed herein are a cation-exchanged clay mineral comprising a swelling clay mineral with the cations between layers substantially replaced by low-valence metal amine complexes and/or low-valence metal ammine complexes, and a packing material for chromatography using the same. Use of the packing material provides a sharp peak with respect to a highly unsaturated compound. Since the packing material is unlikely to be influenced by a solvent, it is usable for a long time with good stability.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: November 13, 2001
    Assignee: Shiseido Company, Ltd.
    Inventors: Yutaka Ohtsu, Isao Tanaka, Yasuhiko Kadota, Michihiro Yamaguchi
  • Column for chromatograph
    Patent number: D634658
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: March 22, 2011
    Assignee: Shiseido Co., Ltd.
    Inventor: Yasuhiko Kadota
  • Column for chromatograph
    Patent number: D634659
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: March 22, 2011
    Assignee: Shiseido Co., Ltd.
    Inventor: Yasuhiko Kadota