Granted Patent
Utility
US 6,605,144 · App. 09/914,018
High light- fastness yellow composition
Inventors:
Janette Watkinson, John E. Presgrave, Paul Wight
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: Jan 7, 2002
Inventors
Janette Watkinson
John E. Presgrave
Paul Wight
Assignee (at issue)
Avecia 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.