Granted Patent
Utility
US 5,146,468 · App. 07/627,796
Gas doping of solids by crystal growth
Inventors:
Hiroshi Kimura, Ricardo C. Pastor
Patented Case
View Patent ↗
Granted: Sep 8, 1992
Filed: Dec 14, 1990
Inventors
Hiroshi Kimura
Ricardo C. Pastor
Assignee (at issue)
Hughes Aircraft Company
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.