Patents by Inventor David Kemmish

David Kemmish 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).

  • Polymeric Materials
    Publication number: 20090062443
    Abstract: There is described the use of an acetaldehyde decreasing compound in a thermoplastic composition which comprises: (i) a polyester; and (ii) at least one property improving material selected from a compound containing an amino moiety, a nano clay and/or a quaternary ammonium compound; for reducing the degree of discolouration and/or increasing the degree of light transmission of an article formed from the thermoplastic composition. A preferred acetaldehyde decreasing compound is anthranilamide.
    Type: Application
    Filed: December 22, 2006
    Publication date: March 5, 2009
    Inventors: David Kemmish, Steven John Moloney, Stephen Leeming, Gonzalo Sandoval
  • Ion-exchange materials
    Publication number: 20070202374
    Abstract: An ion-exchange material, for example a polymer electrolyte membrane or gas diffusion electrode comprises a semi-crystalline copolymer comprising: a first unit which includes an ion-exchange site; a second crystalline unit; and a third unit which is amorphous. The third unit is used to disrupt the crystallinity of the copolymer thereby to increase its solubility in solvents. The material described may be used in fuel cells.
    Type: Application
    Filed: November 21, 2006
    Publication date: August 30, 2007
    Applicant: Victrex Manufacturing Limited
    Inventors: Richard Bridges, Peter Charnock, David Kemmish, Brian Wilson
  • Polyketones
    Publication number: 20050004340
    Abstract: An apparatus for purifying polyketones includes a pressure vessel 2 which communicates with a water supply line 6 for delivering pressurised water into the vessel 2. Downstream of the vessel 2 is a water drain 12 for removing water to waste. In use, a sample of polyketone is placed in the vessel 2 and liquid water at high pressure (e.g. 60 bar) and high temperature (e.g. 260° C.) is caused to flow through the vessel whereby relatively pure polyketone for example having relatively low sodium, phosphorus and sulphur impurities may be prepared.
    Type: Application
    Filed: May 29, 2002
    Publication date: January 6, 2005
    Inventors: John Devine, Stuart Green, David Kemmish, Brian Wilson
  • Light weight ablative materials
    Publication number: 20030158320
    Abstract: The present invention is directed to the use of thermoplastic composite materials as ablative materials. It has been found that thermoplastic materials, reinforcing additives, a mineral, and optionally a foaming agent when combined produce an ablative material with good mechanical properties.
    Type: Application
    Filed: February 27, 2003
    Publication date: August 21, 2003
    Inventors: David Kemmish, Richard Thomas Leibfried