Granted Patent
Utility
US 4,670,090 · App. 06/821,664
Method for producing a field effect transistor
Inventors:
Neng-Haung Sheng, Mau-Chung Frank Chang, Chien-Ping Lee
Patented Case
View Patent ↗
Granted: Jun 2, 1987
Filed: Jan 23, 1986
Inventors
Neng-Haung Sheng
Mau-Chung Frank Chang
Chien-Ping Lee
Assignee (at issue)
Rockwell International Corporation
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.