Granted Patent
Utility
US 4,515,599 · App. 06/530,916
Process for dyeing paper
Inventor:
Adolf Kaser
Patented Case
View Patent ↗
Granted: May 7, 1985
Filed: Sep 9, 1983
Inventor
Adolf Kaser
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.