Granted Patent
Utility
US 5,508,537 · App. 08/267,386
Bipolar transistor with particular base structure
Inventor:
Kiyotaka Imai
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Jun 29, 1994
Inventor
Kiyotaka Imai
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.