Patents by Inventor Simon P. J. Dennington

Simon P. J. Dennington 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).

  • Binder for anti-fouling paints
    Patent number: 4752629
    Abstract: An anti-fouling marine paint comprises a pigment, a marine biocide which may or may not be identical to the pigment and a film-forming binder which is a hydrolysable polymer which contains units of the formula: ##STR1## and can be obtained by polymerisation of an alpha-aryl alkyl ester having the formula: ##STR2## where R is an alpha, beta-unsaturated organic group, each Ar independently is an aryl group and R' is a hydrogen atom or an alkyl or aryl group.
    Type: Grant
    Filed: May 2, 1986
    Date of Patent: June 21, 1988
    Assignee: International Paint Public Limited Company
    Inventors: Kevin Proudlock, Simon P. J. Dennington
  • Anti-fouling paint containing a copolymer of a triorganotin salt of an unsaturated carboxylic acid
    Patent number: 4139515
    Abstract: An anti-fouling paint for ships' hulls comprises an aqueous emulsion of a film-forming emulsion copolymer and a substantially water-insoluble metalliferous pigment capable of reacting with seawater to form a water-soluble metal compound. The compound contains units of at least one triorganotin salt of an olefinically unsaturated carboxylic acid and units of at least one olefinically unsaturated comonomer selected so that the copolymer has a glass transition temperature of less than 30.degree. C.The paint has the remarkable property that relatively moving seawater smooths the surface of the paint.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: February 13, 1979
    Assignee: The International Paint Co. Ltd.
    Inventor: Simon P. J. Dennington