Granted Patent
Utility
US 5,705,700 · App. 08/755,512
Process for preparing a mixture of cyclohexylamine and dicyclohexylamine
Inventors:
Gerhard Darsow, Gerd-Michael Petruck, Wilfried Niemeier
Patented Case
View Patent ↗
Granted: Jan 6, 1998
Filed: Nov 22, 1996
Inventors
Gerhard Darsow
Gerd-Michael Petruck
Wilfried Niemeier
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.