Granted Patent
Utility
US 5,874,751 · App. 08/626,335
Insulated gate thyristor
Inventors:
Noriyuki Iwamuro, Yuichi Harada, Tadayoshi Iwaana
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Apr 2, 1996
Inventors
Noriyuki Iwamuro
Yuichi Harada
Tadayoshi Iwaana
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.