Granted Patent
Utility
US 4,393,573 · App. 06/181,357
Method of manufacturing semiconductor device provided with complementary semiconductor elements
Inventors:
Kotaro Kato, Tetsuma Sakurai
Patented Case
View Patent ↗
Granted: Jul 19, 1983
Filed: Aug 26, 1980
Inventors
Kotaro Kato
Tetsuma Sakurai
Assignee (at issue)
Nippon Telegraph and Telephone Public 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.