Granted Patent
Utility
US 5,322,959 · App. 08/062,907
Catalytic carboxylation process for preparing aryl-substituted aliphatic carboxylic esters
Inventor:
Tse-Chong Wu
Patented Case
View Patent ↗
Granted: Jun 21, 1994
Filed: May 11, 1993
Inventor
Tse-Chong Wu
Assignee (at issue)
Ethyl 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.