Granted Patent
Utility
US 4,885,618 · App. 07/089,485
Insulated gate FET having a buried insulating barrier
Inventors:
Peter J. Schubert, Robert James Wallace
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Aug 25, 1987
Inventors
Peter J. Schubert
Robert James Wallace
Assignee (at issue)
General Motors LLC
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.