Granted Patent
Utility
US 5,616,780 · App. 08/594,199
Bisphenol ester derivatives
Inventors:
Rita Pitteloud, Bernard Gilg
Patented Case
View Patent ↗
Granted: Apr 1, 1997
Filed: Jan 31, 1996
Inventors
Rita Pitteloud
Bernard Gilg
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.