Granted Patent
Utility
US 6,753,444 · App. 10/181,997
Method for producing 2,3,5,6-tetrahalogen-xylyidene compounds
Inventors:
Reinhard Langer, Lars Rodefeld
Patented Case
View Patent ↗
Granted: Jun 22, 2004
Filed: Jul 24, 2002
Inventors
Reinhard Langer
Lars Rodefeld
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.