Granted Patent
Utility
US 5,686,754 · App. 08/660,716
Polysilicon field ring structure for power IC
Inventors:
Chongwook Chris Choi, Niraj Ranjan
Patented Case
View Patent ↗
Granted: Nov 11, 1997
Filed: Jun 10, 1996
Inventors
Chongwook Chris Choi
Niraj Ranjan
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.