Patents by Inventor Yasumasa Tatekawa

Yasumasa Tatekawa 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).

  • Flame-retardant leather-like sheet and process for producing the same
    Patent number: 8030230
    Abstract: The present invention relates to a flame-retardant leather-like sheet having a soft hand, excellent surface touch and excellent appearance, which includes an entangled nonwoven fabric of microfine polyester fibers having an average single-fiber fineness of 0.5 dtex or less, and an elastic polymer contained inside the nonwoven fabric, wherein a flame-retardant is exhausted into the elastic polymer and wherein a flame retarder solution containing bubbles forcibly formed is applied to a back surface of the leather-like sheet so that the flame retarder is present in a region extending from the back surface to an inside of the leather-like sheet but is not present on side of a front surface of the leather-like sheet.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: October 4, 2011
    Assignee: Kuraray Co., Ltd.
    Inventors: Yasuhiro Yoshida, Masasi Meguro, Hisao Yoneda, Norio Makiyama, Tatsuya Nakashima, Yasumasa Tatekawa
  • FLAME-RETARDANT LEATHER-LIKE SHEET AND PROCESS FOR PRODUCING THE SAME
    Publication number: 20100247843
    Abstract: The present invention relates to a flame-retardant leather-like sheet having a soft hand, excellent surface touch and excellent appearance, which includes an entangled nonwoven fabric of microfine polyester fibers having an average single-fiber fineness of 0.5 dtex or less, and an elastic polymer contained inside the nonwoven fabric, wherein a flame-retardant is exhausted into the elastic polymer and wherein a flame retarder solution containing bubbles forcibly formed is applied to a back surface of the leather-like sheet so that the flame retarder is present in a region extending from the back surface to an inside of the leather-like sheet but is not present on side of a front surface of the leather-like sheet.
    Type: Application
    Filed: August 29, 2007
    Publication date: September 30, 2010
    Applicant: Kuraray Co., Ltd.
    Inventors: Yasuhiro Yoshida, Masasi Meguro, Hisao Yoneda, Norio Makiyama, Tatsuya Nakashima, Yasumasa Tatekawa