Patents by Inventor Alan Pennington

Alan Pennington has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Bromine catalysed oxidation processes
    Patent number: 5847203
    Abstract: In plant for the production and processing of an aromatic carboxylic acid such as terephthalic acid, at least some of the plant components (especially those exposed to an acidic reaction medium at elevated temperatures and pressures in excess of 180.degree. C. and 8 bara respectively) are fabricated from duplex stainless steels and the conditions under which such plant components are exposed to the reaction medium are controlled to maintain a low corrosion rate.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: December 8, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Alan Pennington, Robert Francis Smith