Granted Patent
Utility
US 4,668,747 · App. 06/761,089
Preparation of water soluble cationic acrylamide polymer and product using weak acid to adjust pH
Inventors:
Jeffrey S. Cadel, Eric H. Larson
Patented Case
View Patent ↗
Granted: May 26, 1987
Filed: Aug 2, 1985
Inventors
Jeffrey S. Cadel
Eric H. Larson
Assignee (at issue)
ALLIED CONSULTING, 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.