Granted Patent
Utility
US 6,235,097 · App. 09/486,832
Phthalocyanine compounds used in inks for ink jet printing
Inventors:
Mark Kenworthy, Peter Gregory
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Mar 2, 2000
Inventors
Mark Kenworthy
Peter Gregory
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.