Granted Patent
Utility
US 4,778,843 · App. 06/939,685
Polyamide rheological additive capped with monocarboxylic acid having olefinic unsaturation or hydroxyl group and containing 16-22 carbon atoms
Inventors:
Murray C. Cooperman, Ashok K. Mehta
Patented Case
View Patent ↗
Granted: Oct 18, 1988
Filed: Dec 9, 1986
Inventors
Murray C. Cooperman
Ashok K. Mehta
Assignee (at issue)
NL Chemicals, 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.