Granted Patent
Utility
US 6,229,151 · App. 09/162,708
Group III-V semiconductor light emitting devices with reduced piezoelectric fields and increased efficiency
Inventors:
Tetsuya Takeuchi, Norihide Yamada, Hiroshi Amano, Isamu Akasaki
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Sep 29, 1998
Inventors
Tetsuya Takeuchi
Norihide Yamada
Hiroshi Amano
Isamu Akasaki
Assignee (at issue)
Agilent Technologies, 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.