Granted Patent
Utility
US 5,777,008 · App. 08/451,114
Oligomeric hals phosphites and hals phosphonites as stabilisers
Inventor:
Rita Pitteloud
Patented Case
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Granted: Jul 7, 1998
Filed: May 25, 1995
Inventor
Rita Pitteloud
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.