Patents by Inventor Arthur H. Gilbert

Arthur H. Gilbert 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).

  • Production and/or handling of aryl polyethers and thioethers polymers
    Patent number: 5051495
    Abstract: In making polyarylethersulphones or polyaryletherketones or their thioanalogues by reaction of phenols with aromatic halogen compounds, raw polycondensation product is freed of alkali halide by adjusting its composition and/or temperature so that it dissolves at least 0.5% w/w of water and holds the polymer in solution, and then contacting it in liquid form with hot water, preferably under pressure.
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: September 24, 1991
    Assignee: Imperial Chemical Industries PLC
    Inventors: Philip Staniland, Arthur H. Gilbert, Ian R. M. Henderson
  • Dimerization process
    Patent number: 4316857
    Abstract: A process for the dimerization of acrylonitrile to dicyanobutene and methylene-glutaronitrile under the influence of a phosphinite or phosphonite catalyst uses as solvent a mixture of proton-donating organic solvent, an aromatic hydrocarbon solvent and an aliphatic hydrocarbon solvent in a specified ratio so facilitating product isolation by phase separation or liquid/liquid extraction.
    Type: Grant
    Filed: October 18, 1979
    Date of Patent: February 23, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventor: Arthur H. Gilbert
  • Conversion of cycloalkylhydroperoxides to alkane dicarboxylic acids
    Patent number: 4147883
    Abstract: A cycloalkylhydroperoxide is converted to an alkane-dicarboxylic acid of the same number of carbon atoms, e.g. cyclohexylhydroperoxide to adipic acid, by reaction with nitrogen dioxide.
    Type: Grant
    Filed: July 26, 1976
    Date of Patent: April 3, 1979
    Assignee: Imperial Chemical Industries Limited
    Inventor: Arthur H. Gilbert