Granted Patent
Utility
US 4,645,511 · App. 06/686,135
Aftertreatment of dyed or printed textiles with a polymeric polybasic amino compound
Inventors:
Jurg Heller, Bruno Kissling, Tibor Robinson, Salvatore Valenti
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Dec 24, 1984
Inventors
Jurg Heller
Bruno Kissling
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.