Granted Patent
Utility
US 5,572,055 · App. 08/491,517
Insulated-gate bipolar transistor with reduced latch-up
Inventor:
Hitoshi Sumida
Patented Case
View Patent ↗
Granted: Nov 5, 1996
Filed: Jun 19, 1995
Inventor
Hitoshi Sumida
Assignee (at issue)
FUJI ELECTRIC CO., LTD.
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.