Granted Patent
Utility
US 6,294,093 · App. 09/148,930
Aqueous dispersion of an oil soluble demulsifier for breaking crude oil emulsions
Inventors:
Radhakrishnan Selvarajan, Ananthasubramanian Sivakumar, Robert A. Marble
Patented Case
View Patent ↗
Granted: Sep 25, 2001
Filed: Sep 4, 1998
Inventors
Radhakrishnan Selvarajan
Ananthasubramanian Sivakumar
Robert A. Marble
Assignee (at issue)
Nalco/Exxon Energy Chemicals, L.P.
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.