Patents by Inventor Cezar C. Delcea

Cezar C. Delcea 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).

  • Sialon composition
    Patent number: 5453232
    Abstract: A composition containing at least 70 weight percent of a beta-prime sialon compound and at least about 27 weight percent of a solid solution is disclosed. The solid solution contains from 2 to 50 weight percent of alpha silicon nitride, from 0.5 to 14 weight percent of aluminum nitride, and from 97.5 to 36 weight percent of alpha alumina.
    Type: Grant
    Filed: April 26, 1994
    Date of Patent: September 26, 1995
    Assignee: Benchmark Structural Ceramic Corporation
    Inventors: George T. Hida, Rodica S. Hida, Cezar C. Delcea
  • Sialon composition
    Patent number: 5192720
    Abstract: A process for heat-treating a composite material is disclosed. The composite material contains alumina, free silicon, and a beta-sialon material of the formula Si.sub.6-z Al.sub.z O.sub.z N.sub.8-z, wherein z is from 2.5 to 3.5. In the heat treatment process, the composite material is subjected to temperatures of 800-1,000 degrees centigrade, 1,240 to 1,260 degrees centigrade, and 1,400 to 1,450 degrees centigrade for various times and under specified conditions.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: March 9, 1993
    Assignee: Benchmark Structural Ceramics Corporation
    Inventors: George T. Hida, Rodica S. Hida, Cezar C. Delcea