Granted Patent
Utility
US 5,519,249 · App. 08/223,032
Vertical type bipolar transistor
Inventor:
Fumihiko Sato
Patented Case
View Patent ↗
Granted: May 21, 1996
Filed: Apr 5, 1994
Inventor
Fumihiko Sato
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.