Granted Patent
Utility
US 4,286,997 · App. 06/160,885
Bituminous composite reinforced with a filler coated with the reaction product of a bitumen and a chromium complex
Inventors:
Alfred Marzocchi, Michael G. Roberts, Charles E. Bolen
Patented Case
View Patent ↗
Granted: Sep 1, 1981
Filed: Jun 19, 1980
Inventors
Alfred Marzocchi
Michael G. Roberts
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.