Granted Patent
Utility
US 5,720,902 · App. 08/531,815
Methods and compositions for inhibiting low carbon steel corrosion
Inventors:
Suzanne M. Zefferi, Edward A. Rodzewich
Patented Case
View Patent ↗
Granted: Feb 24, 1998
Filed: Sep 21, 1995
Inventors
Suzanne M. Zefferi
Edward A. Rodzewich
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.