Granted Patent
Utility
US 5,004,589 · App. 07/442,968
Process for preparing sodium tripolyphosphate
Inventors:
George W. Cadwallader, Louis A. Highfill, Gregory D. Kurdys, Richard S. Turigliatto
Patented Case
View Patent ↗
Granted: Apr 2, 1991
Filed: Nov 29, 1989
Inventors
George W. Cadwallader
Louis A. Highfill
Gregory D. Kurdys
Richard S. Turigliatto
Assignee (at issue)
Monsanto 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.