Patents by Inventor Lorenz P. Schell

Lorenz P. Schell 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).

  • Catalytic method for hydrolyzing urea
    Patent number: 4220635
    Abstract: A method for hydrolyzing urea in aqueous solutions such as waste-water streams which comprises heating the aqueous solution containing urea in the presence of a catalytic amount of a vanadium compound for sufficient time and at sufficient temperatures to effect hydrolysis of at least a portion of the urea to ammonia and carbon dioxide.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: September 2, 1980
    Assignee: Olin Corporation
    Inventor: Lorenz P. Schell
  • Catalytic method for hydrolyzing urea
    Patent number: 4168299
    Abstract: A method for hydrolyzing urea in aqueous solutions such as waste-water streams which comprises heating the aqueous solution containing urea in the presence of a catalytic amount of vanadium pentoxide for sufficient time and at sufficient temperatures to effect hydrolysis of substantially all of the urea to ammonia and carbon dioxide.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: September 18, 1979
    Assignee: Olin Corporation
    Inventor: Lorenz P. Schell
  • Method of hydrolyzing urea contained in waste water streams
    Patent number: 4087513
    Abstract: A process for hydrolyzing urea in waste water streams which comprises introducing a waste water stream containing urea into a carbon dioxide recovery system such as used in connection with the production of ammonia, and therein hydrolyzing substantially all of the urea in the waste water stream.
    Type: Grant
    Filed: August 12, 1977
    Date of Patent: May 2, 1978
    Assignee: Olin Corporation
    Inventor: Lorenz P. Schell