Granted Patent
Utility
US 5,225,774 · App. 07/731,754
Semiconductor integrated circuit
Inventor:
Hirohisa Imamura
Patented Case
View Patent ↗
Granted: Jul 6, 1993
Filed: Jul 16, 1991
Inventor
Hirohisa Imamura
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.