Granted Patent
Utility
US 4,529,467 · App. 06/545,286
Fire protective intumescent mastic composition and method employing same
Inventors:
Thomas A. Ward, Stanley T. Greer, William G. Boberski, Jerome A. Seiner
Patented Case
View Patent ↗
Granted: Jul 16, 1985
Filed: Oct 25, 1983
Inventors
Thomas A. Ward
Stanley T. Greer
William G. Boberski
Jerome A. Seiner
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.