Granted Patent
Utility
US 6,589,896 · App. 10/163,653
Lead- and arsenic-free borosilicate glass having improved melting characteristic
Inventor:
Richard C. Marlor
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Jun 6, 2002
Inventor
Richard C. Marlor
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.