Granted Patent
Utility
US 5,854,171 · App. 08/933,649
Honeycomb catalyst for vinyl acetate synthesis
Inventors:
Ioan Nicolau, Philip M. Colling, Leland R. Johnson
Patented Case
View Patent ↗
Granted: Dec 29, 1998
Filed: Sep 19, 1997
Inventors
Ioan Nicolau
Philip M. Colling
Leland R. Johnson
Assignee (at issue)
Celanese International 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.