Granted Patent
Utility
US 5,199,981 · App. 07/643,556
Pigment compositions including intaglio printing ink waste
Inventors:
Maurice A. Amon, Ovart NitidandhaPrabhas
Patented Case
View Patent ↗
Granted: Apr 6, 1993
Filed: Jan 18, 1991
Inventors
Maurice A. Amon
Ovart NitidandhaPrabhas
Assignee (at issue)
SICPA HOLDING SA
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.