Patents Assigned to Isuzu Ceramics Research Insitute Co., Ltd.
  • Silicon nitride based sintered product
    Patent number: 5591687
    Abstract: A silicon nitride based sintered product produced with Si powder, a Si.sub.3 N.sub.4 powder, and an assistant component effective for sintering silicon nitride as raw materials. A resultant sintered product has fine tissue, exhibits little presence of pores and remaining silicon, and possesses high mechanical strength which can be enhanced by calcinating the product under low pressure after it has been reacted and first sintered.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: January 7, 1997
    Assignee: Isuzu Ceramics Research Insitute Co., Ltd.
    Inventors: Hideki Kita, Wenjea J. Tseng, Toshiyuki Yamada