Granted Patent
Utility
US 5,759,211 · App. 08/693,195
Anthraquinone dyes containing a fluorosulphonyl group and use thereof
Inventor:
Nigel Hall
Patented Case
View Patent ↗
Granted: Jun 2, 1998
Filed: Aug 12, 1996
Inventor
Nigel Hall
Assignee (at issue)
Zeneca Limited
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.