Granted Patent
Utility
US 5,777,113 · App. 08/540,513
Hals phosphorinanes as stabilisers
Inventor:
Rita Pitteloud
Patented Case
View Patent ↗
Granted: Jul 7, 1998
Filed: Oct 10, 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.