Granted Patent
Utility
US 4,640,801 · App. 06/680,705
Graft polyols
Inventors:
Dominic Simone, Melvin Brauer
Patented Case
View Patent ↗
Granted: Feb 3, 1987
Filed: Dec 12, 1984
Inventors
Dominic Simone
Melvin Brauer
Assignee (at issue)
CasChem, Inc.
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.