Granted Patent
Utility
US 4,238,347 · App. 06/065,313
Amorphous polyaluminum sulfate compositions
Inventors:
Alan B. Gancy, Christian A. Wamser
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Aug 9, 1979
Inventors
Alan B. Gancy
Christian A. Wamser
Assignee (at issue)
Allied Chemical 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.