Granted Patent
Utility
US 6,284,836 · App. 09/411,096
Aqueous polyurethane dispersions
Inventors:
Tillmann Hassel, Juergen Meixner, Thomas Muenzmay, Juergen Reiners, Jorg Schoob
Patented Case
View Patent ↗
Granted: Sep 4, 2001
Filed: Oct 4, 1999
Inventors
Tillmann Hassel
Juergen Meixner
Thomas Muenzmay
Juergen Reiners
Jorg Schoob
Assignee (at issue)
Bayer Aktiengesellschaft
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.