Granted Patent
Utility
US 6,429,254 · App. 09/882,654
Aqueous polyurethane dispersions containing polybutadiene units
Inventors:
Markus Schafheutle, Anton Arzt, Julius Burkl, Martina Glettler, Ursula Meisner, Gerlinde Petritsch, Joerg Wango
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Jun 15, 2001
Inventors
Markus Schafheutle
Anton Arzt
Julius Burkl
Martina Glettler
Ursula Meisner
Gerlinde Petritsch
Joerg Wango
Assignee (at issue)
Solutia Austria GmbH
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.