Granted Patent
Utility
US 5,801,398 · App. 08/543,980
Field effect transistor
Inventor:
Hiroyuki Hebiguchi
Patented Case
View Patent ↗
Granted: Sep 1, 1998
Filed: Oct 17, 1995
Inventor
Hiroyuki Hebiguchi
Assignee (at issue)
Frontec Incorporated
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.