Granted Patent
Utility
US 4,478,795 · App. 06/434,934
Aluminum trihydroxide deliquoring with anionic polymers
Inventors:
Maryellen Hereda, Stephen A. Fischer
Patented Case
View Patent ↗
Granted: Oct 23, 1984
Filed: Oct 18, 1982
Inventors
Maryellen Hereda
Stephen A. Fischer
Assignee (at issue)
Diamond Shamrock Chemicals 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.