Granted Patent
Utility
US 4,876,222 · App. 07/251,950
Semiconductor passivation
Inventors:
Joseph D. Luttmer, D. Dawn Little
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: Sep 28, 1988
Inventors
Joseph D. Luttmer
D. Dawn Little
Assignee (at issue)
Texas Instruments 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.