Granted Patent
Utility
US 6,291,721 · App. 09/373,262
Processes for the preparation of 2-arylvinyl alkyl ether and 1,4-diaryl-2-fluoro-2-butene compounds
Inventors:
Yulin Hu, David Hunt, Weiguo Liu
Patented Case
View Patent ↗
Granted: Sep 18, 2001
Filed: Aug 12, 1999
Inventors
Yulin Hu
David Hunt
Weiguo Liu
Assignee (at issue)
American Cyanamid Company
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.