Granted Patent
Utility
US 4,525,488 · App. 06/650,383
Preparation of polyaddition products of Mannich condensates and polyisocyanates in polyols and their use in polyurethanes
Inventors:
Michael Cuscurida, George P. Speranza
Patented Case
View Patent ↗
Granted: Jun 25, 1985
Filed: Sep 13, 1984
Inventors
Michael Cuscurida
George P. Speranza
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.