Granted Patent
Utility
US 6,462,014 · App. 09/829,257
Low foaming/defoaming compositions containing alkoxylated quaternary ammonium compounds
Inventors:
Andress K. Johnson, Ralph Franklin
Patented Case
View Patent ↗
Granted: Oct 8, 2002
Filed: Apr 9, 2001
Inventors
Andress K. Johnson
Ralph Franklin
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.