Granted Patent
Utility
US 4,260,728 · App. 06/146,829
Preparation of noncellular polyurethane compositions
Inventors:
Richard J. Turley, David R. MacFarland
Patented Case
View Patent ↗
Granted: Apr 7, 1981
Filed: May 5, 1980
Inventors
Richard J. Turley
David R. MacFarland
Assignee (at issue)
Olin Corporation
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.