Patents by Inventor Hiroshi Tomatsu

Hiroshi Tomatsu 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 for plastic working of ceramics
    Patent number: 4752427
    Abstract: A method for plastic working of ceramics comprising the steps of causing a sintered or pre-sintered body of polycrystalline ceramics containing at 20.degree. C. tetragonal-phase zirconia crystals to undergo plastic deformation at a temperature of about 1,000.degree. C. to about 1,600.degree. C. and then heating the ceramics body at a temperature of about 1,300.degree. C. to about 1,650.degree. C.
    Type: Grant
    Filed: July 11, 1986
    Date of Patent: June 21, 1988
    Assignees: Agency of Industrial Science and Technology, Nippon Kagaku Togyo Co., Ltd.
    Inventors: Fumihiro Wakai, Shuji Sakaguchi, Hiroshi Ohnishi, Hiroshi Tomatsu