Granted Patent
Utility
US 6,776,925 · App. 10/078,951
Process for the preparation of polyether polyols
Inventors:
Jörg Hofmann, Stephan Ehlers, Bernd Klinksiek, Lars Obendorf, Christian Steinlein, Bert Klesczewski, Jose F. Pazos
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Feb 19, 2002
Inventors
Jörg Hofmann
Stephan Ehlers
Bernd Klinksiek
Lars Obendorf
Christian Steinlein
Bert Klesczewski
Jose F. Pazos
Assignees (at issue)
Bayer Aktiengesellschaft
Bayer Polymers LLC
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.