Granted Patent
Utility
US 6,710,217 · App. 10/009,536
Method for producing 4-chlorobiphenyl and 4-chlorobiphenyl-specific specifications
Inventors:
Reinhard Langer, Alexander Klausener, Paul Wagner, Lothar Puppe
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: Nov 13, 2001
Inventors
Reinhard Langer
Alexander Klausener
Paul Wagner
Lothar Puppe
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.