Granted Patent
Utility
US 4,891,092 · App. 06/818,032
Method for making a silicon-on-insulator substrate
Inventor:
Lubomir L. Jastrzebski
Patented Case
View Patent ↗
Granted: Jan 2, 1990
Filed: Jan 13, 1986
Inventor
Lubomir L. Jastrzebski
Assignee (at issue)
General Electric 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.