Granted Patent
Utility
US 4,323,460 · App. 06/193,222
Process of inhibiting scale formation in aqueous systems using .alpha.-1,4-thiazine alkanephosphonic acids
Inventor:
Patrick M. Quinlan
Patented Case
View Patent ↗
Granted: Apr 6, 1982
Filed: Oct 2, 1980
Inventor
Patrick M. Quinlan
Assignee (at issue)
Petrolite 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.