Granted Patent
Utility
US 4,929,991 · App. 07/334,806
Rugged lateral DMOS transistor structure
Inventor:
Richard A. Blanchard
Patented Case
View Patent ↗
Granted: May 29, 1990
Filed: Apr 5, 1989
Inventor
Richard A. Blanchard
Assignee (at issue)
SILICONIX INCORPORATED
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.