Granted Patent
Utility
US 5,011,908 · App. 07/486,916
Polymer polyol compositions and their use in the preparation of polyurethane foams
Inventor:
Stanley L. Hager
Patented Case
View Patent ↗
Granted: Apr 30, 1991
Filed: Mar 1, 1990
Inventor
Stanley L. Hager
Assignee (at issue)
Arco Chemical Technology, L.P.
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.