Granted Patent
Utility
US 6,194,472 · App. 09/243,720
Petroleum hydrocarbon in water colloidal dispersion
Inventors:
Sundaram Logaraj, Thomas J. Ernzen, Moon-Sun Lin, Antonio C. Ng, Todd Lesley Hays, Calvin L. Stegemoeller, Li Feng, Mark Aldrich Stroder
Patented Case
View Patent ↗
Granted: Feb 27, 2001
Filed: Feb 3, 1999
Inventors
Sundaram Logaraj
Thomas J. Ernzen
Moon-Sun Lin
Antonio C. Ng
Todd Lesley Hays
Calvin L. Stegemoeller
Li Feng
Mark Aldrich Stroder
Assignee (at issue)
AKZO NOBEL N.V.
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.