Granted Patent
Utility
US 5,964,929 · App. 08/748,299
Process for the production of ink concentrates
Inventors:
Robert Langley, Paul Kerwin, Arthur Stark Walls, Kenneth Grant Dykes
Patented Case
View Patent ↗
Granted: Oct 12, 1999
Filed: Nov 13, 1996
Inventors
Robert Langley
Paul Kerwin
Arthur Stark Walls
Kenneth Grant Dykes
Assignee (at issue)
Ciba Specialty Chemicals Corporation
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.