Granted Patent
Utility
US 6,794,445 · App. 10/413,703
Aqueous polysiloxane-polyurethane dispersion, its preparation and use in coating compositions
Inventors:
Gerhard Reusmann, Markus Hallack
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Apr 15, 2003
Inventors
Gerhard Reusmann
Markus Hallack
Assignee (at issue)
GOLDSCHMIDT HOLDING 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.