Granted Patent
Utility
US 4,281,089 · App. 06/184,950
Polyurethane compositions and process
Inventor:
Jose F. Pazos
Patented Case
View Patent ↗
Granted: Jul 28, 1981
Filed: Sep 8, 1980
Inventor
Jose F. Pazos
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.