Granted Patent
Utility
US 4,663,159 · App. 06/697,241
Hydrophobe substituted, water-soluble cationic polysaccharides
Inventors:
George L. Brode, Russell L. Kreeger, Errol D. Goddard, Frederick M. Merritt, II, David B. Braun
Patented Case
View Patent ↗
Granted: May 5, 1987
Filed: Feb 1, 1985
Inventors
George L. Brode
Russell L. Kreeger
Errol D. Goddard
Frederick M. Merritt, II
David B. Braun
Assignee (at issue)
Union Carbide 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.