Granted Patent
Utility
US 4,454,047 · App. 06/379,532
Process of treating aqueous systems
Inventors:
Harold L. Becker, Rudolf S. Buriks
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: May 18, 1982
Inventors
Harold L. Becker
Rudolf S. Buriks
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.