Granted Patent
Utility
US 4,174,431 · App. 05/937,007
Process for polymerizing conjugated dienes
Inventors:
Adel Farhan Halasa, James E. Hall, Donald N. Schulz
Patented Case
View Patent ↗
Granted: Nov 13, 1979
Filed: Aug 25, 1978
Inventors
Adel Farhan Halasa
James E. Hall
Donald N. Schulz
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.