Patents by Inventor Martin F. Bentham

Martin F. Bentham 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).

  • Patent number: 5008004
    Abstract: Processes are disclosed for the recovery of aromatic extraction solvent from the raffinate phase of aromatic extraction processes. The raffinate phase is washed with water that is obtained in part by condensing a portion of the steam generated for stripping aromatics from the extract phase. The remaining portion of the raffinate wash water is provided by steam from a steam generation zone. The processes are especially useful when the feed contains relatively large amounts of non-aromatics and therefore produces a large raffinate stream. Disclosed solvents include sulfolane-type solvents, polyalkylene glycols, glycol ethers and mixtures thereof.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: April 16, 1991
    Assignee: UOP
    Inventors: William H. Maier, Martin F. Bentham
  • Patent number: 4897182
    Abstract: An improved process for the extraction of aromatics from a mixed feed provides additional flexibility of operation which is especially useful when the feed contains relatively large amounts of nonaromatics and therefore produces a large raffinate stream. Water for washing the non-aromatic raffinate is obtained in part by condensing a portion of the steam generated for stripping aromatics from the extract.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: January 30, 1990
    Assignee: UOP
    Inventors: William H. Maier, Martin F. Bentham