Granted Patent
Utility
US 4,927,868 · App. 07/087,012
High solids coating compositions containing a polyepoxide and a copolymer of an alpha-olefin and an olefinically unsaturated monoanhydride
Inventors:
Karl F. Schimmel, William P. Blackburn
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Aug 19, 1987
Inventors
Karl F. Schimmel
William P. Blackburn
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.