Granted Patent
Utility
US 5,147,908 · App. 07/587,012
Cationic polyvinyl alcohol binder additive
Inventors:
William C. Floyd, III, Louis R. Dragner
Patented Case
View Patent ↗
Granted: Sep 15, 1992
Filed: Sep 24, 1990
Inventors
William C. Floyd, III
Louis R. Dragner
Assignee (at issue)
Sequa 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.