Granted Patent
Utility
US 4,399,449 · App. 06/207,124
Composite metal and polysilicon field plate structure for high voltage semiconductor devices
Inventors:
Thomas Herman, Alexander Lidow
Patented Case
View Patent ↗
Granted: Aug 16, 1983
Filed: Nov 17, 1980
Inventors
Thomas Herman
Alexander Lidow
Assignee (at issue)
International Rectifier 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.