Patents by Inventor David Henry Cooper

David Henry Cooper 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).

  • Plastisol compositions with two dissimilar acrylic polymer components
    Patent number: 6495626
    Abstract: Acrylic plastisol composition comprising a plasticiser component, a plasticiser compatible acrylic polymer powder component of primary particle size ≧0.4 &mgr;m and preferably not more than 30 &mgr;m, and Tg ≧65° C., and a plasticiser incompatible polymer powder component, where both polymers are preformed, are present in the weight ratio 95:5 to 40:60, and in combination are compatibly formulated with the plasticiser component.
    Type: Grant
    Filed: August 18, 1999
    Date of Patent: December 17, 2002
    Assignee: Zeneca Limited
    Inventors: Andrew Stuart Overend, David Henry Cooper, John Christopher Padget