Granted Patent
Utility
US 4,857,205 · App. 07/158,830
Method for inhibition of scale formation
Inventors:
Derek Redmore, Balram Dhawan, John L. Przybylinski
Patented Case
View Patent ↗
Granted: Aug 15, 1989
Filed: Feb 22, 1988
Inventors
Derek Redmore
Balram Dhawan
John L. Przybylinski
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.