Granted Patent
Utility
US 4,394,482 · App. 06/360,124
Modified asphalt composition
Inventor:
William E. Uffner
Patented Case
View Patent ↗
Granted: Jul 19, 1983
Filed: Mar 22, 1982
Inventor
William E. Uffner
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.