Granted Patent
Utility
US 6,812,644 · App. 10/357,790
Reduced mercury ceramic metal halide lamp
Inventors:
Nikolay Natchev, Lori Brock, Harold L. Rothwell, Jr.
Patented Case
View Patent ↗
Granted: Nov 2, 2004
Filed: Feb 4, 2003
Inventors
Nikolay Natchev
Lori Brock
Harold L. Rothwell, Jr.
Assignee (at issue)
OSRAM SYLVANIA 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.