Patents by Inventor Robin Wainwright

Robin Wainwright 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).

  • Divalent metal stannate products
    Patent number: 6576696
    Abstract: A divalent metal stannate product having a loss on ignition of 2-17% by weight, e.g. a product intermediate ZnSn(OH)6 and ZnSnO3 has advantageous flame-retardant properties, for use e.g. in polymer formulations.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: June 10, 2003
    Assignee: Alcan International Limited
    Inventors: Consuelo Espejo Rodriguez, Clare Daniels, Robin Wainwright, Michael Rai
  • Intumescent compositions
    Patent number: 5532292
    Abstract: An intumescent composition comprises saline soluble inorganic silicate fibrous material containing CaO, MgO and no more than 4% by weight of Al.sub.2 O.sub.3, such as calcium magnesium silicate. The fibres may be vitreous, with an average length of 10 to 500 microns, and may form 5 to 30 weight percent of the composition. The composition may be incorporated in a coating composition, e.g. for wet coating (paint) or powder coating, or a mastic or putty, or a composition containing a polymer. Enhanced fire protection can be provided, and the coating compositions may be applied as a single thick coating rather than by building up thin layers.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: July 2, 1996
    Assignee: Alcan International Limited
    Inventors: Robin Wainwright, Kenneth A. Evans