Granted Patent
Utility
US 6,074,889 · App. 09/205,184
Method for producing semiconductor light-emitting device with undoped spacer layer
Inventor:
Kazuaki Sasaki
Patented Case
View Patent ↗
Granted: Jun 13, 2000
Filed: Dec 4, 1998
Inventor
Kazuaki Sasaki
Assignee (at issue)
SHARP KABUSHIKI KAISHA
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.