Martha L Mccrum

55653928, Oct 15, 1996

Jun 1, 1995

8/457658

Karin M. Kinsman - San Mateo CA
Ryan W. Dupon - San Carlos CA
Martha L. McCrum - Sunnyvale CA
Linas Mazeika - San Carlos CA
Amy S. Chu - Oakland CA

Raychem Corporation - Menlo Park CA

C04B 3324
C04B 3326

501141

A method for making a high strength porcelain for use as an insulator or a structural ceramic, comprising: A) forming a mixture comprising alumina, clay and a fluxing material; B) forming the mixture into a shaped article; and C) firing the shaped article.

54610150, Oct 24, 1995

Aug 29, 1994

8/297451

Karin M. Kinsman - San Mateo CA
Ryan W. Dupon - San Carlos CA
Martha L. McCrum - Sunnyvale CA
Linas Mazeika - San Carlos CA
Amy S. Chu - Oakland CA

Raychem Corporation - Menlo Park CA

C04B 3326

501141

A porcelain having 9 to 55% by weight of SiO. sub. 2, 36 to 87% by weight of Al. sub. 2 O. sub. 3, 0 to 2. 0% by weight of Fe. sub. 2 O. sub. 3, 0 to 1. 0% by weight of TiO. sub. 2, 0 to 0. 5% by weight of CaO, 0 to 0. 5% by weight of MgO, 1. 0 to 4. 0% by weight of K. sub. 2 O and Na. sub. 2 O combined, and 0. 25 to 25. 0% by weight of bismuth oxide is disclosed. The porcelain has unexpectedly high unglazed bending strength and may be used for dielectric and structural applications.