Patents by Inventor Shin-ichi Haba

Shin-ichi Haba 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).

  • Polyurethane foam and polishing pad
    Patent number: 8557005
    Abstract: The present invention provides a polyurethane foam, which, despite having a low specific gravity, has a hardness and an elasticity favorable for a polishing pad, and a polishing pad made using the polyurethane foam. The polyurethane foam is obtained by reacting a blend composition containing (A) a polyisocyanate, (B) a polyol, (C) a chain extender with a molecular weight of equal to or smaller than 400, and (D) water, and in the blend composition, MDI is blended as a main component of the component (A) and a blending amount of the MDI is 45 to 70 parts by weight when a total weight of the respective components (A), (B), and (C) is taken as 100 parts by weight.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: October 15, 2013
    Assignees: Toyo Polymer Co., Ltd., Nitta Haas Incorporated
    Inventors: Michiro Goto, Kazuo Takemoto, Nobuyuki Ooshima, Shin-ichi Haba, Kouichi Yoshida, Norio Kawai
  • POLYURETHANE FOAM AND POLISHING PAD
    Publication number: 20110039966
    Abstract: The present invention provides a polyurethane foam, which, despite having a low specific gravity, has a hardness and an elasticity favorable for a polishing pad, and a polishing pad made using the polyurethane foam. The polyurethane foam is obtained by reacting a blend composition containing (A) polyisocyanate, (B) a polyol, (C) a chain extender with a molecular weight of equal to or smaller than 400, and (D) water, and in the blend composition, MDI is blended as a main component of the component (A) and a blending amount of the MDI is 45 to 70 parts by weight when a total weight of the respective components (A), (B), and (C) is taken as 100 parts by weight.
    Type: Application
    Filed: April 21, 2009
    Publication date: February 17, 2011
    Applicants: TOYO POLYMER CO., LTD., NITTA HAAS INCORPORATED
    Inventors: Michiro Goto, Kazuo Takemoto, Nobuyuki Ooshima, Shin-ichi Haba, Kouichi Yoshida, Norio Kawai