Patents by Inventor Mikio Tsuboi

Mikio Tsuboi 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).

  • Cleansing composition
    Patent number: 6350783
    Abstract: The present invention relates to a cleansing composition comprising at least one compound selected from N-long chain acylamino acids represented by formula (I): (wherein n represents 1 or 2; and R represents a saturated or unsaturated hydrocarbon group having 5 to 23 carbon atoms), and salts thereof.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: February 26, 2002
    Assignee: Kyowa Hakko Kogyo
    Inventors: Shinkichi Honda, Mikio Tsuboi
  • CLEANSING COMPOSITION
    Publication number: 20010055576
    Abstract: The present invention relates to a cleansing composition comprising at least one compound selected from N-long chain acylamino acids represented by formula (I): 1
    Type: Application
    Filed: November 4, 1998
    Publication date: December 27, 2001
    Inventors: SHINKICHI HONDA, MIKIO TSUBOI
  • Cleansing compositions comprising N-acylamino acids
    Patent number: 6288023
    Abstract: The present invention relates to a cleansing composition comprising at least one compound selected from N-long chain acylamino acids represented by formula (I): (wherein n represents 1 or 2; and R represents a saturated or unsaturated hydrocarbon group having 5 to 23 carbon atoms), and salts thereof.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: September 11, 2001
    Assignee: Kyowa Hakko Kogyo, Co., Ltd.
    Inventors: Shinkichi Honda, Mikio Tsuboi
  • Packaging material for high pressure liquid chromatography and method of making the same
    Patent number: 4828695
    Abstract: A novel packing material suitable for high pressure liquid chromatography comprising the chemically bonded, crosslinked reaction product of porous inorganic particles, with an organic silane compound having epoxy groups on the surface of the particles, and then with polyvinyl alcohol, in which the hydroxyl groups of the polyvinyl alcohol and the epoxy groups on the silane moieties react to form ether bonds, which cover almost or almost completely the residual silica hydroxyl groups on the surface of the support.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: May 9, 1989
    Assignee: Yamamura Chemical Laboratories, Co., Ltd.
    Inventors: Ryuji Yamamura, Mikio Tsuboi, Keishi Kitagawa, Masaru Abe