Patents by Inventor Richard Paul Hauser

Richard Paul Hauser 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 recovery and recycle of ammonia from an acrylonitrile reactor effluent stream using an ammonium phosphate quench system
    Patent number: 5895635
    Abstract: A process for the recovery of unreacted ammonia from the reactor effluent obtained from a reaction zone used to produce acrylonitrile or methacrylonitrile comprising quenching the reactor effluent with an aqueous solution of ammonium phosphate wherein the ratio of ammonium ions to phosphate ions in the solution is between about 0.7 to about 1.3, preferably between about 0.9 to 1.2.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: April 20, 1999
    Assignee: The Standard Oil Company
    Inventors: James Frank Brazdil, Jr., Kenneth Paul Keckler, Richard Paul Hauser