Granted Patent
Utility
US 6,506,833 · App. 10/027,043
Fluid thickeners comprising neutralized crosslinked polymers of acrylamidoalkylsulonic acids and N-vinylamides
Inventors:
Peter Brungs, Mattias Löffler
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: Dec 20, 2001
Inventors
Peter Brungs
Mattias Löffler
Assignee (at issue)
Clariant Corporation
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.