Granted Patent
Utility
US 5,518,974 · App. 08/188,678
Densely sintered, tabular ceramic parts of aluminum oxide having improved thermal shock resistance
Inventors:
Wolfgang Krahn, Johannes Ernst, Claudia Drabent
Patented Case
View Patent ↗
Granted: May 21, 1996
Filed: Jan 31, 1994
Inventors
Wolfgang Krahn
Johannes Ernst
Claudia Drabent
Assignee (at issue)
Hoechst GmbH
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.