Granted Patent
Utility
US 5,332,710 · App. 07/961,738
Vinyl acetate catalyst preparation method
Inventors:
Ioan Nicolau, Philip M. Colling, Leland R. Johnson
Patented Case
View Patent ↗
Granted: Jul 26, 1994
Filed: Oct 14, 1992
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.