Granted Patent
Utility
US 4,338,425 · App. 06/132,736
Process for preparing diene-containing rubbers having improved green strength
Inventors:
David J. Dougherty, Binnur Z. Gunesin, John W. Spiewak
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Mar 24, 1980
Inventors
David J. Dougherty
Binnur Z. Gunesin
John W. Spiewak
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.