Granted Patent
Utility
US 4,814,409 · App. 07/091,114
Polysiloxane-polyoxyalkylene terpolymers for polyurethane foam manufacture
Inventors:
Charles H. Blevins, II, William B. Herdle, Gerald J. Murphy
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Aug 31, 1987
Inventors
Charles H. Blevins, II
William B. Herdle
Gerald J. Murphy
Assignee (at issue)
Union Carbide Corporation
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.