Granted Patent
Utility
US 4,233,265 · App. 06/060,558
Liquid polymer hydration
Inventor:
Kenneth E. Gasper
Patented Case
View Patent ↗
Granted: Nov 11, 1980
Filed: Jul 25, 1979
Inventor
Kenneth E. Gasper
Assignee (at issue)
Olin 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.