Granted Patent
Utility
US 6,586,523 · App. 09/937,835
Self-crosslinking polyurethane, polyurethane polyurea or polyurea dispersions for sizing agents
Inventors:
Harald Blum, Karin Naujoks, Eberhard Konig
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: Sep 28, 2001
Inventors
Harald Blum
Karin Naujoks
Eberhard Konig
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.