Granted Patent
Utility
US 6,508,873 · App. 09/744,906
Phthalocyanine compounds used in inks for ink jet printing
Inventors:
Andrew Paul Shawcross, Gavin Wright
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Jan 31, 2001
Inventors
Andrew Paul Shawcross
Gavin Wright
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.