Granted Patent
Utility
US 5,081,288 · App. 07/596,621
Process for the preparation of substituted 3,5-dichloro-2,4-difluoro-benzenes
Inventors:
Heinz U. Blank, Edwin Ritzer
Patented Case
View Patent ↗
Granted: Jan 14, 1992
Filed: Oct 10, 1990
Inventors
Heinz U. Blank
Edwin Ritzer
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.