Granted Patent
Utility
US 5,747,402 · App. 08/792,472
Translucent polycrystalline alumina and method of making same
Inventors:
George C. Wei, Arlene Hecker, David Alan Goodman
Patented Case
View Patent ↗
Granted: May 5, 1998
Filed: Jan 31, 1997
Inventors
George C. Wei
Arlene Hecker
David Alan Goodman
Assignee (at issue)
OSRAM SYLVANIA Inc.
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.