Granted Patent
Utility
US 4,314,073 · App. 06/161,560
Process for the production of an aromatic dicarboxylic acid
Inventor:
Graham R. Crooks
Patented Case
View Patent ↗
Granted: Feb 2, 1982
Filed: Jun 20, 1980
Inventor
Graham R. Crooks
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.