Granted Patent
Utility
US 4,708,987 · App. 06/834,603
Rapid bulk polymerization of polybutadiene/nylon and related block copolymers
Inventors:
William L. Hergenrother, Arthur W. Greenstreet
Patented Case
View Patent ↗
Granted: Nov 24, 1987
Filed: Feb 28, 1986
Inventors
William L. Hergenrother
Arthur W. Greenstreet
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.