Granted Patent
Utility
US 4,439,551 · App. 06/476,736
Packaging foam polyurethane composition employing novel polyol blend
Inventors:
Ernest L. Yeakey, Michael Cuscurida, Michael E. Brennan
Patented Case
View Patent ↗
Granted: Mar 27, 1984
Filed: Mar 18, 1983
Inventors
Ernest L. Yeakey
Michael Cuscurida
Michael E. Brennan
Assignee (at issue)
Texaco 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.