Granted Patent
Utility
US 5,316,980 · App. 07/929,161
Method of making a semiconductor device by dry etching process
Inventor:
Shinichi Takeshiro
Patented Case
View Patent ↗
Granted: May 31, 1994
Filed: Aug 11, 1992
Inventor
Shinichi Takeshiro
Assignee (at issue)
NEC 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.