Patents by Inventor Toshihiro Oonishi

Toshihiro Oonishi 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).

  • Method and apparatus for cutting a rubber sheet material used to form power transmission belts
    Patent number: 5893310
    Abstract: A cutting apparatus for sheet material, such as a power transmission belt molding pad, which cutting apparatus has a first structure for supporting a sheet material, a second structure for engaging and advancing the sheet material on the first structure to a predetermined cutting position, and structure for guidingly cutting the sheet material in the cutting position.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: April 13, 1999
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Katsuhiko Hirao, Akihiro Nagata, Toshihiro Oonishi, Toshihiro Ueda
  • Production of hydrogels
    Patent number: 4367323
    Abstract: The invention is to provide the methods for producing highly water-absorbable and water-retainable hydrogels having a large particle diameter together with a sufficient gel strength. The method is characterized by use of a specific dispersing agent in the water-in-oil type inverse phase suspension polymerization of an .alpha.,.beta.-unsaturated carboxylic acid and/or its alkali metal salt. Due to the high water-absorbability and water-retainability, along with the superior gel strength and the stable gel structure, the hydrogels of the invention enlarge the conventional range of usages.
    Type: Grant
    Filed: December 2, 1981
    Date of Patent: January 4, 1983
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Shuji Kitamura, Fumio Fujita, Toshihiro Oonishi, Yoshiharu Tatsukami, Masato Ogura, Masahiro Niwano, Masaru Oota, Toshifumi Tamura