Granted Patent
Utility
US 6,290,763 · App. 09/269,061
AZO dyes and compositions comprising such dyes
Inventors:
Christine Millard, Peter Gregory, Roy Bradbury
Patented Case
View Patent ↗
Granted: Sep 18, 2001
Filed: Mar 18, 1999
Inventors
Christine Millard
Peter Gregory
Roy Bradbury
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.