Granted Patent
Utility
US 6,558,460 · App. 09/526,941
Pigmented ink jet inks
Inventors:
Nicholas Alexander Walker, Peter E. Rose
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Mar 16, 2000
Inventors
Nicholas Alexander Walker
Peter E. Rose
Assignee (at issue)
Ilford Imaging UK 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.