Granted Patent
Utility
US 6,433,058 · App. 09/455,927
Superabsorbent polymers having a slow rate of absorption
Inventors:
Joseph L Weir, Larry R. Wilson
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Dec 7, 1999
Inventors
Joseph L Weir
Larry R. Wilson
Assignee (at issue)
Dow Global Technologies LLC
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.