Granted Patent
Utility
US 5,009,799 · App. 07/155,861
Inorganic acid solution viscosifier and corrosion inhibitor and method
Inventors:
Allen R. Syrinek, Ralph N. Buggs, Robert K. Gabel
Patented Case
View Patent ↗
Granted: Apr 23, 1991
Filed: Feb 16, 1988
Inventors
Allen R. Syrinek
Ralph N. Buggs
Robert K. Gabel
Assignee (at issue)
Nalco Chemical Company
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.