Granted Patent
Utility
US 5,616,278 · App. 08/635,123
Inhibition of scale and corrosion in aqueous systems
Inventors:
William S. Carey, Andrew Solov, Libardo A. Perez, Donald T. Freese
Patented Case
View Patent ↗
Granted: Apr 1, 1997
Filed: Apr 19, 1996
Inventors
William S. Carey
Andrew Solov
Libardo A. Perez
Donald T. Freese
Assignee (at issue)
Betzdearborn, Inc.
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.