Granted Patent
Utility
US 5,342,810 · App. 08/024,235
Zinc-containing, lead- and cadmium-free glass frits, method of their production and their use
Inventors:
Bernard Merigaud, Michel Claus
Patented Case
View Patent ↗
Granted: Aug 30, 1994
Filed: Mar 1, 1993
Inventors
Bernard Merigaud
Michel Claus
Assignee (at issue)
Degussa AG
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.