Granted Patent
Utility
US 6,268,501 · App. 09/441,595
Process for the preparation of hydroxyethylcyclohexanes and hydroxyethylpiperidines
Inventor:
Wolfgang Kiel
Patented Case
View Patent ↗
Granted: Jul 31, 2001
Filed: Nov 17, 1999
Inventor
Wolfgang Kiel
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.