Granted Patent
Utility
US 6,255,692 · App. 09/372,961
Trench-gate semiconductor device
Inventor:
Eddie Huang
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Aug 12, 1999
Inventor
Eddie Huang
Assignee (at issue)
U.S. Philips 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.