Granted Patent
Utility
US 4,374,244 · App. 06/206,997
Linear quaternary ammonium polymers
Inventors:
Harold A. Green, John J. Merianos, Alfonso N. Petrocci
Patented Case
View Patent ↗
Granted: Feb 15, 1983
Filed: Nov 17, 1980
Inventors
Harold A. Green
John J. Merianos
Alfonso N. Petrocci
Assignee (at issue)
Kewanee Industries, 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.