Granted Patent
Utility
US 4,980,128 · App. 07/026,494
Control of corrosion in aqueous systems
Inventors:
Dionisio G. Cuisia, Chih M. Hwa, Murrell L. Salutsky
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: Mar 16, 1987
Inventors
Dionisio G. Cuisia
Chih M. Hwa
Murrell L. Salutsky
Assignee (at issue)
W.R. Grace & Co. Conn.
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.