Granted Patent
Utility
US 4,764,585 · App. 07/096,662
Cationic polycondensates useful for improving the fastness of dyeings on textiles
Inventors:
Jurg Heller, Bruno Kissling, Curt Muller, Tibor Robinson, Salvatore Valenti
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Sep 15, 1987
Inventors
Jurg Heller
Bruno Kissling
Curt Muller
Tibor Robinson
Salvatore Valenti
Assignee (at issue)
Sandoz AG
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.