Granted Patent
Utility
US 5,145,879 · App. 07/636,638
Surfactants for manufacture of urethane foams
Inventors:
Richard A. Budnik, Charles H. Blevins, II, Gerald J. Murphy, Wojciech Grabowski, Raymond L. Cobb
Patented Case
View Patent ↗
Granted: Sep 8, 1992
Filed: Dec 31, 1990
Inventors
Richard A. Budnik
Charles H. Blevins, II
Gerald J. Murphy
Wojciech Grabowski
Raymond L. Cobb
Assignee (at issue)
Union Carbide Chemicals & Plastics Technology LLC
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.