Granted Patent
Utility
US 5,300,706 · App. 08/028,850
Process for the preparation of d,1-menthol
Inventors:
Otto Immel, Gerhard Darsow, Hans-Josef Buysch
Patented Case
View Patent ↗
Granted: Apr 5, 1994
Filed: Mar 10, 1993
Inventors
Otto Immel
Gerhard Darsow
Hans-Josef Buysch
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.