Patents by Inventor Jun Ohkawa, deceased

Jun Ohkawa, deceased 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).

  • Resin-based artificial marble compositions
    Patent number: 5324757
    Abstract: A resin-based composition for casting artificial marble has excellent resistance to hot water. The composition includes an unsaturated polyester resin and a gibbsite-type aluminum hydroxide which has been surface-treated with an ethylenically unsaturated silane coupling agent.
    Type: Grant
    Filed: November 27, 1992
    Date of Patent: June 28, 1994
    Assignee: Alcan Chemicals Limited
    Inventors: Jun Ohkawa, deceased, Toshihiro Matsuba, Masashi Ishizaki