Patents by Inventor Philip H. Gamlen

Philip H. Gamlen 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: 5169983
    Abstract: An organic polymeric material, which is preferably perfluorinated and which comprises a polymeric chain and at least one group pendant from the chain, in which the group pendant from the chain comprises a saturated cyclic group and at least one ion-exchange group or group convertible thereto, and in which the ion-exchange group of group convertible thereto is linked to the polymeric chain through the cyclic group. Also an ion-exchange membrane produced from the polymeric material, an electrolytic cell containing the membrane, vinyl monomers from which the organic polymeric material may be produced and intermediates useful in production of the monomers.
    Type: Grant
    Filed: September 25, 1990
    Date of Patent: December 8, 1992
    Assignee: Imperial Chemical Industries PLC
    Inventors: Harold C. Fielding, Philip H. Gamlen, Ian M. Shirley
  • Patent number: 5001163
    Abstract: An organic polymeric material, which is preferably perfluorinated and which comprises a polymeric chain and at least one group pendant from the chain, in which the group pendant from the chain comprises a saturated cyclic group and at least one ion-exchange group or group convertible thereto, and in which the ion-exchange group or group convertible thereto is linked to the polymeric chain through the cyclic group. Also an ion-exchange membrane produced from the polymeric material, an electrolytic cell containing the membrane, vinyl monomers from which the organic polymeric material may be produced and intermediates useful in production of the monomers.
    Type: Grant
    Filed: March 1, 1989
    Date of Patent: March 19, 1991
    Assignee: Imperial Chemical Industries PLC
    Inventors: Harold C. Fielding, Philip H. Gamlen, Ian M. Shirley
  • Patent number: 4376019
    Abstract: A process for the manufacture of halogenated hydrocarbons which comprises contacting a hydrocarbon or halogenated hydrocarbon feedstock with a solution of a halide carrier to halogenate the feedstock whereby the halide carrier is reduced to a spent carrier and regenerating the halide carrier by electrolysis of the spent carrier solution from the halogenation reaction by electrolyzing the spent carrier solution in the presence of halide ions under conditions whereby deposition of metal or metal salts and liberation of elemental halogen are substantially avoided. In particular embodiments, the feedstock is halogenated using a non-aqueous solution of the halide carrier in which the ratio of halide ion:metal ion of the halide carrier is below 2:1, preferably about 1:1 and regeneration of the halide carrier is carried out in a three-compartment cell having two ion-exchange membranes or a diaphragm and a membrane.
    Type: Grant
    Filed: April 21, 1981
    Date of Patent: March 8, 1983
    Assignee: Imperial Chemical Industries PLC
    Inventors: Philip H. Gamlen, Michael S. Henty, David R. Sandbach, Brian T. Grady