Patents by Inventor Toshirou Hirama

Toshirou Hirama 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).

  • Granular carrier for immobilizing microbial cells and apparatus for producing the granular carrier
    Patent number: 5990191
    Abstract: A microorganism cells-immobilizing granular carrier and its manufacturing system.Said microorganism cells-immobilizing granular carrier, which has a specific gravity of 1.00 to 1.20, and which has a contact angle of 2.degree. to 30.degree. formed between the carrier surface and n-paraffin, and which has a surface suitable for the attachment of a microorganism, is obtained by dripping a liquid composition containing a hydrophilic photo-curable resin having (a) at least two ethylenically-unsaturated bonds in one molecule, (b) photopolymerization initiator, and (c) water-soluble macromolecular polysaccharide capable of gelatinizing through contact with alkaline metal ions or polyvalent metal ions, into an aqueous medium containing alkaline metal ions or polyvalent metal ions to gelatinize the composition; and irradiating the composition with ultraviolet radiation so as to harden said composition.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: November 23, 1999
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Makoto Kikuta, Hitoshi Izumida, Kiyoshi Nanishi, Toshirou Hirama