Patents by Inventor Tetsuji Kitoh

Tetsuji Kitoh 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).

  • Patent number: 7732050
    Abstract: This invention provides water-absorbing polymer particles suitable particularly for cosmetics, wherein silicone can be stably present on the surface of a water-absorbing polymer even in various formulations thereby giving dry feeling in use even after water absorption. The silicone-modified water-absorbing polymer particles of this invention comprises water-absorbing polymer particles coated thereon via chemical bonding, with a silicone compound having at least one functional group.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: June 8, 2010
    Assignee: Kao Corporation
    Inventors: Hiromi Nambu, Tetsuji Kitoh, Yoshihiro Hasebe
  • Publication number: 20030065087
    Abstract: This invention provides water-absorbing polymer particles suitable particularly for cosmetics, wherein silicone can be stably present on the surface of a water-absorbing polymer even in various formulations thereby giving dry feeling in use even after water absorption. The silicone-modified water-absorbing polymer particles of this invention comprises water-absorbing polymer particles coated thereon via chemical bonding, with a silicone compound having at least one functional group.
    Type: Application
    Filed: May 3, 2002
    Publication date: April 3, 2003
    Applicant: Kao Corporation
    Inventors: Hiromi Nambu, Tetsuji Kitoh, Yoshihiro Hasebe
  • Patent number: 6218593
    Abstract: An absorbent article includes a liquid permeable topsheet, a liquid impermeable back sheet, and an absorbent member interposed between the topsheet and the back sheet. While worn, the absorbent article forms a front waist body portion located at the front waist of a wearer and a rear waist body portion located at the rear waist of a wearer. The rear waist body portion has at each side thereof a fastening member for fastening the absorbent article, wherein the back sheet is made up of laminated sheeting composed of a finely porous resin film and nonwoven fabric. The fastening member is formed of a male sheet member of a mechanical fastener and designed to be brought into direct contact with the surface of the nonwoven fabric constituting the back sheet. The above-mentioned absorbent article has a good fit on a wearer, exhibits excellent leakproofness and breathability while worn, and has an excellent texture.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: April 17, 2001
    Assignee: Kao Corporation
    Inventors: Yasuhiro Torimae, Tetsuya Masuki, Tetsuji Kitoh, Jun Sasaki, Manabu Kaneda
  • Patent number: 5849001
    Abstract: The porous sheet obtainable by stretching, in at least one direction, a sheet formed from a melt mixture of a resin composition comprising:100 parts by weight of a resin mixture consisting of 63 to 90 parts by weight of a crystalline polyolefin resin, and 37 to 10 parts by weight of a compound having a volatile temperature at an ambient pressure of 240.degree. C. or higher and a melting temperature of 90.degree. C. or lower; and7 to 40 parts by weight of a particulate material having an average particle diameter of 0.3 to 8 .mu.m and a maximum particle diameter of 13 .mu.m or smaller, the particulate material being not melted at the molding temperature of the resin mixture is disclosed.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: December 15, 1998
    Assignee: Kao Corporation
    Inventors: Yasuhiro Torimae, Tetsuji Kitoh, Takahiro Sato