Granted Patent
Utility
US 5,874,623 · App. 08/101,509
Process for the production of polyether aminoalcohols
Inventors:
Rick L. Adkins, William E. Slack
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Aug 2, 1993
Inventors
Rick L. Adkins
William E. Slack
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.