Granted Patent
Utility
US 4,609,738 · App. 06/430,415
Novel dyes, their production and their use
Inventor:
Peter Mockli
Patented Case
View Patent ↗
Granted: Sep 2, 1986
Filed: Sep 30, 1982
Inventor
Peter Mockli
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.