Granted Patent
Utility
US 6,531,423 · App. 09/612,168
Liquid-phase-sintered SiC shaped bodies with improved fracture toughness and a high electric resistance
Inventors:
Karl-Alexander Schwetz, Lorenz Sigl, Thomas P. Kempf, Georg P. Victor
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Jul 8, 2000
Inventors
Karl-Alexander Schwetz
Lorenz Sigl
Thomas P. Kempf
Georg P. Victor
Assignee (at issue)
WACKER CHEMIE AG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.