Granted Patent
Utility
US 5,112,496 · App. 07/664,900
Methods for inhibition of scale in high brine environments
Inventors:
Balram Dhawan, Derek Redmore, John L. Przybylinski
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Mar 5, 1991
Inventors
Balram Dhawan
Derek Redmore
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.