Granted Patent
Utility
US 4,989,004 · App. 07/543,156
Analog-to-digital converting unit for successive approximation
Inventor:
Hideyo Kanayama
Patented Case
View Patent ↗
Granted: Jan 29, 1991
Filed: Jun 25, 1990
Inventor
Hideyo Kanayama
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.