Granted Patent
Utility
US 4,362,565 · App. 06/197,446
Color former composition
Inventors:
Reginald N. Pineger, Malcolm C. Clark
Patented Case
View Patent ↗
Granted: Dec 7, 1982
Filed: Oct 16, 1980
Inventors
Reginald N. Pineger
Malcolm C. Clark
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.