Granted Patent
Utility
US 4,834,764 · App. 07/124,339
Process for obtaining wash-and cleaning resistant textile finishes with reactive perfluoroalkyl-containing (co) polymers and/or precondensates and a blocked isocyanate compound
Inventors:
Hans Deiner, Bernhard Sandner, Franz Mosch, Willy Bernheim
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Nov 20, 1987
Inventors
Hans Deiner
Bernhard Sandner
Franz Mosch
Willy Bernheim
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.