Patents by Inventor Ian R. M. Henderson

Ian R. M. Henderson 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: 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