Granted Patent
Utility
US 4,463,170 · App. 06/460,979
Polymeric compounds prepared from diphenylamine and dihydroxyalkylbenzene
Inventors:
Richard E. Gloth, James J. Tazuma, Robert A. Smith
Patented Case
View Patent ↗
Granted: Jul 31, 1984
Filed: Jan 26, 1983
Inventors
Richard E. Gloth
James J. Tazuma
Robert A. Smith
Assignee (at issue)
THE GOODYEAR TIRE & RUBBER COMPANY
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.