Granted Patent
Utility
US 6,429,344 · App. 09/439,770
Process for the preparation of d,I-menthol
Inventors:
Reinhard Langer, Gerd-Michael Petruck
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Nov 15, 1999
Inventors
Reinhard Langer
Gerd-Michael Petruck
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.