Granted Patent
Utility
US 5,786,405 · App. 08/742,548
Amine-initiated polyether polyols and a process for their production
Inventors:
Steven L. Schilling, Herman P. Doerge, Lotar Hanusa
Patented Case
View Patent ↗
Granted: Jul 28, 1998
Filed: Nov 1, 1996
Inventors
Steven L. Schilling
Herman P. Doerge
Lotar Hanusa
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.