Granted Patent
Utility
US 4,439,201 · App. 06/353,114
Process for retanning leather with acrylic-based oligomers
Inventors:
Alain Lauton, Albert Wurmli
Patented Case
View Patent ↗
Granted: Mar 27, 1984
Filed: Mar 1, 1982
Inventors
Alain Lauton
Albert Wurmli
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.