Granted Patent
Utility
US 4,666,969 · App. 06/837,555
Ricinoleate plasticizers for polyurethane compositions
Inventors:
Melvin Brauer, William J. Downey, Frank C. Naughton
Patented Case
View Patent ↗
Granted: May 19, 1987
Filed: Mar 3, 1986
Inventors
Melvin Brauer
William J. Downey
Frank C. Naughton
Assignee (at issue)
CasChem, Inc.
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.