Granted Patent
Utility
US 5,405,893 · App. 08/198,247
"Gamma crystalline modification of 2.2',2""-nitrilo[triethyl-tris-(3,3',5,5'-t'-biphenyl-2,2'-diyl) phosphite]"
Inventors:
Stephen D. Pastor, Sai P. Shum, Paul A. Odorisio
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: Feb 18, 1994
Inventors
Stephen D. Pastor
Sai P. Shum
Paul A. Odorisio
Assignee (at issue)
Ciba-Geigy
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.