Granted Patent
Utility
US 5,310,889 · App. 07/918,324
Carbohydrate substituted dibenzo(d,f)(1,3,2)dioxaphosphepin stabilizers
Inventors:
Stephen D. Pastor, Joseph E. Babiarz
Patented Case
View Patent ↗
Granted: May 10, 1994
Filed: Jul 22, 1992
Inventors
Stephen D. Pastor
Joseph E. Babiarz
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.