Granted Patent
Utility
US 4,570,690 · App. 06/653,652
Mixing procedure for obtaining filled rubber vulcanizates containing aromatic furazan oxides
Inventor:
Daniel F. Graves
Patented Case
View Patent ↗
Granted: Feb 18, 1986
Filed: Sep 21, 1984
Inventor
Daniel F. Graves
Assignee (at issue)
The Firestone 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.