Granted Patent
Utility
US 4,988,461 · App. 07/498,472
Compositions of water-dispersed amine-containing polymers
Inventor:
Carl Steven Nichols
Patented Case
View Patent ↗
Granted: Jan 29, 1991
Filed: Mar 22, 1990
Inventor
Carl Steven Nichols
Assignee (at issue)
B. F. Goodrich Company
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.