Granted Patent
Utility
US 4,897,505 · App. 07/290,216
Process for the preparation of 3-(2-chloro-2-(4-chloro-phenyl)-vinyl)-2,2-dimethylcyclopropanecarboxyli c acid
Inventor:
Reinhard Lantzsch
Patented Case
View Patent ↗
Granted: Jan 30, 1990
Filed: Dec 27, 1988
Inventor
Reinhard Lantzsch
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.