Granted Patent
Utility
US 6,423,802 · App. 09/316,527
Water soluble copolymers and polymer compositions comprising same and use thereof
Inventors:
Edward E. Miller, William J. Benton
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: May 21, 1999
Inventors
Edward E. Miller
William J. Benton
Assignees (at issue)
Cabot Corporation
Frtiz 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.