Granted Patent
Utility
US 5,800,862 · App. 08/438,590
Textile treatment
Inventors:
Werner Kaufmann, Dieter Reinehr, Rolf Hilfiker
Patented Case
View Patent ↗
Granted: Sep 1, 1998
Filed: May 10, 1995
Inventors
Werner Kaufmann
Dieter Reinehr
Rolf Hilfiker
Assignee (at issue)
Ciba Specialty Chemicals Corporation
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.