Granted Patent
Utility
US 5,882,391 · App. 08/948,037
Bisazo inkjet dyes
Inventors:
Peter Gregory, Prahalad Manibhai Mistry, Roy Bradbury, Paul Wight
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Oct 9, 1997
Inventors
Peter Gregory
Prahalad Manibhai Mistry
Roy Bradbury
Paul Wight
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.