Granted Patent
Utility
US 5,439,747 · App. 08/156,350
Anodized aluminum having protective coating
Inventors:
Shelley D. Sturdevant, Edward T. Ryan, Bruce A. Connelly
Patented Case
View Patent ↗
Granted: Aug 8, 1995
Filed: Nov 22, 1993
Inventors
Shelley D. Sturdevant
Edward T. Ryan
Bruce A. Connelly
Assignee (at issue)
PPG Industries, 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.