Granted Patent
Utility
US 6,498,071 · App. 09/725,410
Manufacture of trench-gate semiconductor devices
Inventors:
Erwin Hijzen, Cornelis Eustatius Timmering, John R. Cutter
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Nov 29, 2000
Inventors
Erwin Hijzen
Cornelis Eustatius Timmering
John R. Cutter
Assignee (at issue)
KONINKLIJKE PHILIPS ELECTRONICS NV
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.