Granted Patent
Utility
US 5,679,867 · App. 08/611,446
Carbonylation via solid acid catalysis
Inventors:
David A. Bruce, Mario L. Occelli, David A. Schiraldi, Dhiraj Sudesh Sood, Cindy Elyse Sullivan, Mark G. White
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Mar 1, 1996
Inventors
David A. Bruce
Mario L. Occelli
David A. Schiraldi
Dhiraj Sudesh Sood
Cindy Elyse Sullivan
Mark G. White
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.