Granted Patent
Utility
US 5,502,431 · App. 08/192,468
Integrated circuit device
Inventor:
Shinichi Usui
Patented Case
View Patent ↗
Granted: Mar 26, 1996
Filed: Feb 7, 1994
Inventor
Shinichi Usui
Assignee (at issue)
Nippon Precision Circuits Inc.
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.