Granted Patent
Utility
US 4,798,675 · App. 07/110,138
Corrosion inhibiting compositions containing carboxylated phosphonic acids and sequestrants
Inventors:
Richard J. Lipinski, Kelvin Y. Chang
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: Oct 19, 1987
Inventors
Richard J. Lipinski
Kelvin Y. Chang
Assignee (at issue)
The Mogul 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.