Granted Patent
Utility
US 6,713,815 · App. 10/147,415
Semiconductor device with transistors that convert a voltage difference into a drain current difference
Inventors:
Fumiyasu Utsunomiya, Hirokazu Yoshizawa
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: May 16, 2002
Inventors
Fumiyasu Utsunomiya
Hirokazu Yoshizawa
Assignee (at issue)
SEIKO INSTRUMENTS 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.