Granted Patent
Utility
US 4,654,385 · App. 06/814,446
Asphalt coating composition
Inventors:
Michael G. Roberts, Frederick H. Ponn, Charles E. Bolen
Patented Case
View Patent ↗
Granted: Mar 31, 1987
Filed: Dec 30, 1985
Inventors
Michael G. Roberts
Frederick H. Ponn
Charles E. Bolen
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.