Granted Patent
Utility
US 4,618,667 · App. 06/724,692
Nucleation of urethane compositions
Inventors:
Edward L. Kay, Kenneth B. Roskos
Patented Case
View Patent ↗
Granted: Oct 21, 1986
Filed: Apr 18, 1985
Inventors
Edward L. Kay
Kenneth B. Roskos
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.