Patents by Inventor Iemitsu Ohshima

Iemitsu Ohshima 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).

  • Synthetic clay for ceramics and process for production thereof
    Patent number: 5763345
    Abstract: A synthetic clay for ceramics is formed of 30-65 wt % of amorphous silica, 30-65 wt % of alumina trihydrate, and 2-20 wt % of at least one element selected from a group consisting of sepiolite, palygorskite, and bentonite. The clay may have a slurry form, partially dehydrated form, or mass or dry powder. The synthetic clay is comparable or even superior to natural clay in plasticity, water retentivity and capability of forming water film. The synthetic lay is useful for ceramic industry or pottery.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: June 9, 1998
    Assignee: Cosmo Clay & Ceramics Co., Ltd.
    Inventors: Iemitsu Ohshima, Akira Kikuhata