Granted Patent
Utility
US 5,693,586 · App. 08/670,860
Palladium-gold catalyst for vinyl acetate production
Inventors:
Ioan Nicolau, Philip M. Colling, Leland R. Johnson
Patented Case
View Patent ↗
Granted: Dec 2, 1997
Filed: Jun 28, 1996
Inventors
Ioan Nicolau
Philip M. Colling
Leland R. Johnson
Assignee (at issue)
Hoechst Celanese 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.