Patents by Inventor Hirofumi Kikuchii

Hirofumi Kikuchii 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).

  • POLISHING PAD AND METHOD FOR MANUFACTURING THE POLISHING PAD
    Publication number: 20110171890
    Abstract: A polishing pad is disclosed which is less likely to cause scratches, and has an excellent planarization performance and polishing stability. In one aspect, the invention provides a polishing pad comprising an ultrafine fiber-entangled body formed of ultrafine fibers having an average fineness of 0.01 to 0.8 dtex, and a polymeric elastomer. The polymeric elastomer has a glass transition temperature of ?10° C. or below, storage moduli at 23° C. and 50° C. of 90 to 900 MPa, and a water absorption ratio, when saturated with water at 50° C., of 0.2 to 5 mass %.
    Type: Application
    Filed: August 4, 2009
    Publication date: July 14, 2011
    Applicant: Kuraray Co., Ltd.
    Inventors: Kimio Nakayama, Nobuo Takaoka, Mitsuru Kato, Hirofumi Kikuchii