Granted Patent
Utility
US 5,658,495 · App. 08/720,609
Mn-dope Na-Li-taenolite
Inventors:
Ru-Yi Qi, Ronald E. Karam
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Oct 1, 1996
Inventors
Ru-Yi Qi
Ronald E. Karam
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.