Granted Patent
Utility
US 6,472,679 · App. 09/476,017
Semiconductor structures using a group III-nitride quaternary material system with reduced phase separation and method of fabrication
Inventors:
Toru Takayama, Takaaki Baba, James S. Harris, Jr.
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Dec 31, 1999
Inventors
Toru Takayama
Takaaki Baba
James S. Harris, Jr.
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.
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.