Granted Patent
Utility
US 6,555,502 · App. 09/551,948
Multicomponent superabsorbent gel particles
Inventors:
Thomas W. Beihoffer, Michael A. Mitchell, Mark Anderson, Anthony S. Tomlin
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Apr 19, 2000
Inventors
Thomas W. Beihoffer
Michael A. Mitchell
Mark Anderson
Anthony S. Tomlin
Assignee (at issue)
BASF SE
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.