Granted Patent
Utility
US 5,344,852 · App. 08/021,716
Unsaturated polyester-polyurethane hybrid resin foam compositions
Inventors:
Gary T. Brooks, Harold R. Edwards, Jr., Kathy J. Thrash, Donald Rubis, David P. Sinclair
Patented Case
View Patent ↗
Granted: Sep 6, 1994
Filed: Feb 24, 1993
Inventors
Gary T. Brooks
Harold R. Edwards, Jr.
Kathy J. Thrash
Donald Rubis
David P. Sinclair
Assignee (at issue)
Aristech Chemical Company
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.