Granted Patent
Utility
US 6,696,517 · App. 10/123,450
Use of copolymers based on acrylamidoalkylsulfonic acids as thickeners in preparations comprising organic solvents
Inventors:
Matthias Loffler, Roman Morschhäuser, Peter Klug
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Apr 16, 2002
Inventors
Matthias Loffler
Roman Morschhäuser
Peter Klug
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.