Granted Patent
Utility
US 4,954,560 · App. 07/373,923
Stable polymer/polyols made without macromonomer
Inventors:
Richard M. Gerkin, Michael W. Jorgenson, Paul W. Leuzzi, II
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Jun 30, 1989
Inventors
Richard M. Gerkin
Michael W. Jorgenson
Paul W. Leuzzi, II
Assignee (at issue)
Union Carbide Chemicals & Plastics
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.