Granted Patent
Utility
US 6,713,556 · App. 10/275,088
Dimethylpyrazole-blocked isocyanate mixtures
Inventors:
Eberhard Konig, Reinhard Halpaap, Thomas Klimmasch, Hans-Ulrich Meier-Westhues, Harald Mertes, Joachim Schüll, Bernd Steinhilber
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Nov 1, 2002
Inventors
Eberhard Konig
Reinhard Halpaap
Thomas Klimmasch
Hans-Ulrich Meier-Westhues
Harald Mertes
Joachim Schüll
Bernd Steinhilber
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.