Granted Patent
Utility
US 3,937,760 · App. 05/464,871
Process for producing multiblock copolymer and products produced thereby
Inventors:
William M. Cole, Shingo Futamura
Patented Case
View Patent ↗
Granted: Feb 10, 1976
Filed: Apr 29, 1974
Inventors
William M. Cole
Shingo Futamura
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.