Patents by Inventor Kohtaro Kirimura

Kohtaro Kirimura 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).

  • Powder rubber subjected to treatment of making unevenness on surface thereof and rubber composition using the same and tire
    Patent number: 7344777
    Abstract: A powder rubber obtained by crushing a waste rubber comprising various kinds of rubbers is subjected to treatment of making unevenness on a surface thereof. A method in which a microorganism growing with a rubber being an only carbon source and powder rubber having an average particle diameter of 1 mm or less are added to a culture medium to cultivate the microorganism can be applied as treatment of making the unevenness. The powder rubber is decomposed by this method, and the surface area is increased, whereby a rubber composition which is excellent in abrasion resistance, fracture characteristics and crack growth resistance can be obtained. A WU-YS05 strain (Patent Microorganism Depository Center: Accession number: FERM P-18660) belonging to Pseudonocardiaceae is effective as the microorganism.
    Type: Grant
    Filed: November 28, 2002
    Date of Patent: March 18, 2008
    Assignee: Bridgestone Corporation
    Inventors: Kuniki Kino, Kohtaro Kirimura, Masahiro Hojo, Yuichi Ishino
  • Powdery rubber having unevened surface and rubber compositions and tires using the same
    Publication number: 20050037199
    Abstract: A powder rubber obtained by crushing a waste rubber comprising various kinds of rubbers is subjected to treatment of making unevenness on a surface thereof. A method in which a microorganism growing with a rubber being an only carbon source and powder rubber having an average particle diameter of 1 mm or less are added to a culture medium to cultivate the microorganism can be applied as treatment of making the unevenness. The powder rubber is decomposed by this method, and the surface area is increased, whereby a rubber composition which is excellent in abrasion resistance, fracture characteristics and crack growth resistance can be obtained. A WU-YS05 strain (Patent Microorganism Depository Center: Accession number: FERM P-18660) belonging to Pseudonocardiaceae is effective as the microorganism.
    Type: Application
    Filed: November 28, 2002
    Publication date: February 17, 2005
    Inventors: Kuniki Kino, Kohtaro Kirimura, Masahiro Hojo, Yuichi Ishino
  • Method of producing 1-menthyl- &agr;-D-glucopyranoside
    Patent number: 6277602
    Abstract: A method of producing 1-menthyl-&agr;-D-glucopyranoside is provided, wherein microorganisms capable of producing 1-menthol glycoside from 1-menthol are added to sugars and 1-menthol. Bacteria selected from the group consisting of Xanthomonas species, Stenotrophomonas species and Arthrobacter species may be used as the microorganisms.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: August 21, 2001
    Assignee: Lotte Co., Ltd.
    Inventors: Shoji Usami, Kohtaro Kirimura, Hiroyuki Nakagawa, Yukio Dobashi, Masaaki Yoshiyama, Susumu Shimura, Yoshio Ito