Granted Patent
Utility
US 4,386,965 · App. 06/223,174
Process for obtaining coating compositions of improved whiteness
Inventors:
Werner Fringeli, Max Flubacher, Alain Lauton
Patented Case
View Patent ↗
Granted: Jun 7, 1983
Filed: Jan 7, 1981
Inventors
Werner Fringeli
Max Flubacher
Alain Lauton
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.