Granted Patent
Utility
US 6,569,212 · App. 09/793,497
Phthalocyanine ink-jet dyes
Inventor:
Kathryn Carr
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Feb 27, 2001
Inventor
Kathryn Carr
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.