Granted Patent
Utility
US 5,644,148 · App. 08/674,982
Power transistor device having ultra deep increased concentration region
Inventor:
Daniel M. Kinzer
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Jul 3, 1996
Inventor
Daniel M. Kinzer
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.