Granted Patent
Utility
US 5,261,953 · App. 07/795,209
Inks
Inventors:
Eric Vieira, David G. Leppard, Hugh Stephen Laver, Vien Van Toan
Patented Case
View Patent ↗
Granted: Nov 16, 1993
Filed: Nov 20, 1991
Inventors
Eric Vieira
David G. Leppard
Hugh Stephen Laver
Vien Van Toan
Assignee (at issue)
Ciba-Geigy
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.