Granted Patent
Utility
US 5,423,906 · App. 08/108,425
Trisazo dyes, inks comprising same and their use in ink jet printing
Inventors:
Peter Gregory, Prahalad Manibhai Mistry
Patented Case
View Patent ↗
Granted: Jun 13, 1995
Filed: Aug 19, 1993
Inventors
Peter Gregory
Prahalad Manibhai Mistry
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.