Granted Patent
Utility
US 6,656,989 · App. 09/574,896
Compositions comprising water soluble copolymer and cesium salt of a carboxylic acid
Inventors:
William J. Benton, Edward E. Miller
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: May 19, 2000
Inventors
William J. Benton
Edward E. Miller
Assignees (at issue)
Cabot Corporation
FRITZ INDUSTRIES, INC.
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.