Granted Patent
Utility
US 6,777,523 · App. 10/148,282
Highly functional polyisocyanate mixtures which are dispersible in water
Inventors:
Hans-Josef Laas, Martin Brahm, Reinhard Halpaap
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: May 28, 2002
Inventors
Hans-Josef Laas
Martin Brahm
Reinhard Halpaap
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.