Granted Patent
Utility
US 5,877,346 · App. 08/861,595
Process for the production of terephthalic acid
Inventors:
Eric Hindmarsh, John A. Turner, Alan Macpherson Ure
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: May 22, 1997
Inventors
Eric Hindmarsh
John A. Turner
Alan Macpherson Ure
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.