Granted Patent
Utility
US 5,693,864 · App. 07/957,929
Process for the production of secondary amine terminated polyethers
Inventors:
William E. Slack, Rick L. Adkins, Hans G. Schmelzer
Patented Case
View Patent ↗
Granted: Dec 2, 1997
Filed: Oct 7, 1992
Inventors
William E. Slack
Rick L. Adkins
Hans G. Schmelzer
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.