Granted Patent
Utility
US 4,797,501 · App. 07/107,343
Silicone-based stabilizers useful in the preparation of improved polyurethane foams
Inventors:
Richard C. Myerly, Michael W. Jorgenson, Frank E. Critchfield
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: Oct 13, 1987
Inventors
Richard C. Myerly
Michael W. Jorgenson
Frank E. Critchfield
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.