Patents by Inventor Philip J. Cook

Philip J. Cook 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).

  • Elevated pressure phthalic anhydride process
    Patent number: 5210223
    Abstract: The present invention is an improvement to the conventional process for the production of phthalic anhydride. In particular, the present invention enables the crude phthalic anhydride product to be recovered in a more efficient manner.
    Type: Grant
    Filed: June 17, 1992
    Date of Patent: May 11, 1993
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Michael S. Chen, Philip J. Cook, Harold H. Gunardson, Melinda B. Ulrich
  • Process for removing oxygen from crude argon
    Patent number: 5035726
    Abstract: A process is provided for purifying argon gas, especially an argon gas stream obtained by cryogenically separating air, wherein the argon gas is heated and compressed, and then permeated through a solid electrolyte membrane selective to the permeation of oxygen over other components of the gas, and removing oxygen from the argon by selective permeation of oxygen through the membrane. The purified argon can then be distilled to remove other components such as nitrogen.
    Type: Grant
    Filed: May 24, 1990
    Date of Patent: July 30, 1991
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Michael S. Chen, Philip J. Cook
  • Reliquefaction of boil-off from liquefied natural gas
    Patent number: 4846862
    Abstract: The present invention relates to an improved process for the reliquefaction of boil-off gas containing up to 10% nitrogen resulting from the evaporation of liquefied natural gas (LNG) contained in a storage vessel. In the process, a closed-loop refrigeration cycle is utilized wherein an isenthalpically expanded stream is warmed against an initially cooled boil-off stream. The boil-off LNG stream is initially cooled by indirect heat exchange with an isentropically expanded refrigerant stream.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: July 11, 1989
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Philip J. Cook
  • Process for removing oxygen and nitrogen from crude argon
    Patent number: RE34595
    Abstract: .[.A process is provided for purifying argon gas, especially an argon gas stream obtained by cryogenically separating air, wherein the argon gas is heated and compressed, and then permeated through a solid electrolyte membrane selective to the permeation of oxygen over other components of the gas, and removing oxygen from the argon by selective permeation of oxygen through the membrane. The purified argon can then be distilled to remove other components such as nitrogen..]..Iadd.A process is provided for producing a purified argon stream wherein oxygen and nitrogen are removed from crude bulk argon streams, particularly those produced by cryogenic, adsorptive or membrane separation of air. The process comprises separating a heated, compressed crude argon stream containing nitrogen and oxygen into an oxygen permeate stream and an oxygen-depleted argon stream by passing the compressed heated argon stream through a solid electrolyte membrane selective to the permeation of oxygen.
    Type: Grant
    Filed: March 6, 1992
    Date of Patent: May 3, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Michael S. K. Chen, Philip J. Cook