Granted Patent
Utility
US 5,885,952 · App. 08/649,938
Multifunctional detergent base
Inventors:
Rolf Kuratli, Claude Eckhardt, Frank Bachmann, Werner Schreiber
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: May 15, 1996
Inventors
Rolf Kuratli
Claude Eckhardt
Frank Bachmann
Werner Schreiber
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.