Granted Patent
Utility
US 4,444,947 · App. 06/407,373
Chemically modified high oil asphalt
Inventors:
Edward R. Harrington, William E. Uffner, Richard T. Janicki
Patented Case
View Patent ↗
Granted: Apr 24, 1984
Filed: Aug 12, 1982
Inventors
Edward R. Harrington
William E. Uffner
Richard T. Janicki
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.