Granted Patent
Utility
US 6,518,601 · App. 09/726,120
Light-emitting diode
Inventor:
Ralph Wirth
Patented Case
View Patent ↗
Granted: Feb 11, 2003
Filed: Nov 30, 2000
Inventor
Ralph Wirth
Assignee (at issue)
OSRAM Opto Semiconductors GmbH
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.