Patents by Inventor Philip Edward Langley

Philip Edward Langley 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).

  • Cyclohexane oxidation process
    Patent number: 4055600
    Abstract: Aliphatic or cycloaliphatic hydrocarbons (especially cyclyhexane) are oxidized in the liquid phase with an oxygen-containing gas at low conversion in a reactor comprising two contacting compartments allowing heat transfer from one to the other, the first operating at a higher pressure than the second into which the reaction mixture from the first is released so effecting cooling, partial evaporation of the excess hydrocarbon and concentration of the oxidation product.
    Type: Grant
    Filed: November 6, 1975
    Date of Patent: October 25, 1977
    Assignee: Imperial Chemical Industries Limited
    Inventors: Philip Edward Langley, Robert Tulip
  • Adipic acid manufacture
    Patent number: 3997601
    Abstract: In the continuous manufacture of adipic acid by nitric acid oxidation of an organic feedstock oxidisable thereto in which cooling is effected by recycling the reaction mixture through a cooling circuit external to the reactor, improved temperature control is achieved by feeding the feedstock to the cooling circuit upstream of at least one cooler.
    Type: Grant
    Filed: August 5, 1974
    Date of Patent: December 14, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventor: Philip Edward Langley