Granted Patent
Utility
US 6,537,675 · App. 09/714,811
Protective coatings for improved tarnish resistance in metal foils
Inventors:
Sidney J. Clouser, Michael A. Centanni
Patented Case
View Patent ↗
Granted: Mar 25, 2003
Filed: Nov 15, 2000
Inventors
Sidney J. Clouser
Michael A. Centanni
Assignee (at issue)
Ga-Tek, 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.