Granted Patent
Utility
US 6,117,189 · App. 08/438,591
Protective method
Inventors:
Dieter Reinehr, Peter Fankhauser, Claude Eckhardt
Patented Case
View Patent ↗
Granted: Sep 12, 2000
Filed: May 10, 1995
Inventors
Dieter Reinehr
Peter Fankhauser
Claude Eckhardt
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.