Granted Patent
Utility
US 6,642,652 · App. 09/879,547
Phosphor-converted light emitting device
Inventors:
William David Collins, III, Michael R. Krames, Godefridus Johannes Verhoeckx, Nicolaas Joseph Martin Van Leth
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Jun 11, 2001
Inventors
William David Collins, III
Michael R. Krames
Godefridus Johannes Verhoeckx
Nicolaas Joseph Martin Van Leth
Assignee (at issue)
Lumileds Lighting US, LLC
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.