Granted Patent
Utility
US 6,218,680 · App. 09/313,802
Semi-insulating silicon carbide without vanadium domination
Inventors:
Calvin H. Carter, Jr., Mark Brady, Valeri F. Tsvetkov
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: May 18, 1999
Inventors
Calvin H. Carter, Jr.
Mark Brady
Valeri F. Tsvetkov
Assignee (at issue)
Cree, Inc.
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.