Granted Patent
Utility
US 5,679,846 · App. 08/682,424
Process for the production of terephalic acid
Inventors:
Eric Hindmarsh, John A. Turner, Alan Macpherson Ure
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Jul 17, 1996
Inventors
Eric Hindmarsh
John A. Turner
Alan Macpherson Ure
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.