Patents by Inventor James F. Conrad

James F. Conrad 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).

  • Process for the continuous separation of maleic anhydride from process gases
    Patent number: 4941895
    Abstract: A process is disclosed for increasing the recovery of maleic anhydride from the product condenser. Maleic anhydride is added to the oxidation reactor gaseous effluent. Maleic acid buildup in the condenser is reduced; condenser plugging is reduced; and process run time required to build up to production rates after periodic cleaning can be reduced.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: July 17, 1990
    Assignee: Amoco Corporation
    Inventors: Stephen C. Ceisel, James F. Conrad, Elizabeth M. Lestan, Allen P. Nelson