Granted Patent
Utility
US 5,420,257 · App. 08/126,697
Reactive triazine dyes, their preparation and use
Inventors:
Kenneth Anderton, Andrew Paul Shawcross
Patented Case
View Patent ↗
Granted: May 30, 1995
Filed: Sep 17, 1993
Inventors
Kenneth Anderton
Andrew Paul Shawcross
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.