Patents by Inventor James Leeming

James Leeming 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
    Patent number: 9139704
    Abstract: A method of introducing an additive, for example a dye, into a polymeric material comprises using a liquid formulation comprising the additive, a vehicle and an active compound added to increase the melt viscosity of the polymeric material. The active compound may be a multi-functional anhydride. The liquid formulation is suitably contacted with the polymeric material in a melt processing apparatus and suitably a cavity transfer mixer is used in the process. A fiber is suitably subsequently produced.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: September 22, 2015
    Assignee: COLORMATRIX HOLDINGS, INC.
    Inventors: John Goulbourn, Andrew Stuart Overend, Christine Leeming, James Leeming
  • POLYMERIC MATERIALS
    Publication number: 20130338308
    Abstract: A method of introducing an additive, for example a dye, into a polymeric material comprises using a liquid formulation comprising the additive, a vehicle and an active compound added to increase the melt viscosity of the polymeric material. The active compound may be a multi-functional anhydride. The liquid formulation is suitably contacted with the polymeric material in a melt processing apparatus and suitably a cavity transfer mixer is used in the process. A fibre is suitably subsequently produced.
    Type: Application
    Filed: December 19, 2011
    Publication date: December 19, 2013
    Applicant: Colomatrix Holdings, Inc.
    Inventor: James Leeming