Granted Patent
Utility
US 5,980,993 · App. 09/074,919
Method for applying a color-plus-clear composite coating to a substrate
Inventors:
George W. Mauer, Donaldson J. Emch, Roxalana L. Martin, Edward R. Coleridge
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: May 8, 1998
Inventors
George W. Mauer
Donaldson J. Emch
Roxalana L. Martin
Edward R. Coleridge
Assignee (at issue)
PPG Industries Ohio, 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.