Patents by Inventor Tetuya Yasaka

Tetuya Yasaka 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).

  • Ceramics sheet and production method for same
    Patent number: 6001761
    Abstract: Disclosed are a ceramics sheet which has an area of 400 cm.sup.2 or more, thickness of 0.4 mm or less, maximum waviness height of 100 .mu.m or less, and warp of 0.1% or less and in which frequency of generated cracking and breakage is 10% or less when a load-applying test and a deflection-loading test each described in the text are carried out in succession, and a flat and large ceramics sheet having an area of 600 cm.sup.2 or more and thickness of 1 mm or less.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: December 14, 1999
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Kazuo Hata, Norikazu Aikawa, Hideki Imai, Tetuya Yasaka