Granted Patent
Utility
US 4,615,779 · App. 06/698,993
Cationic coating compositions for electrodeposition over rough steel
Inventors:
Gregory J. McCollum, Roger L. Scriven, Roger M. Christenson, George W. Mauer, Robert R. Zwack
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Feb 7, 1985
Inventors
Gregory J. McCollum
Roger L. Scriven
Roger M. Christenson
George W. Mauer
Robert R. Zwack
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.