Granted Patent
Utility
US 4,572,919 · App. 06/702,995
Unsaturated polyoxyalkylene adduct/fumarate diester reaction product for cellular foam stabilization
Inventor:
Michael E. Londrigan
Patented Case
View Patent ↗
Granted: Feb 25, 1986
Filed: Feb 15, 1985
Inventor
Michael E. Londrigan
Assignee (at issue)
Jim Walter Resources, 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.