Patents by Inventor Christopher Charles Naylor

Christopher Charles Naylor 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).

  • BRITTLE POLYMERIC FILM & TAMPER EVIDENT LABELS MADE THEREFROM
    Publication number: 20100212804
    Abstract: A process for the production of a polymeric film comprising a copolyester having an acid component and a diol component, said acid component comprising a dicarboxylic acid and a sulfomonomer containing a sulfonate group attached to the aromatic nucleus of an aromatic dicarboxylic acid, said process comprising the steps of: (i) melt-extruding a layer of said copolyester; (ii) stretching the extrudate in at least one direction; (iii) heat-setting the film by raising the temperature of the stretched film to a temperature T1 in a first heating zone such that (TM?T1 is in the range of from 5 to 30° C., and then raising the temperature of the film to a temperature T2 in a second heating zone such that (TM?T2 is in the range of from 0 to 10° C.
    Type: Application
    Filed: February 23, 2010
    Publication date: August 26, 2010
    Applicant: DuPont Teijin Films U.S. Limited Partnership
    Inventors: William Alasdair MacDonald, Pierre Georges Osborne Moussalli, Kenneth Evans, Jullian Peter Attard, David Boyce, Christopher Charles Naylor, Brian John Farmer, David Edward Robins
  • Process for the production of brittle polymeric film
    Patent number: 7718104
    Abstract: A process for the production of a polymeric film comprising a copolyester having an acid component and a diol component, said acid component comprising a dicarboxylic acid and a sulfomonomer containing a sulfonate group attached to the aromatic nucleus of an aromatic dicarboxylic acid, said process comprising the steps of: (i) melt-extruding a layer of said copolyester; (ii) stretching the extrudate in at least one direction; (iii) heat-setting the film by raising the temperature of the stretched film to a temperature T1 in a first heating zone such that (TM-T1) is in the range of from 5 to 30° C., and then raising the temperature of the film to a temperature T2 in a second heating zone such that (TM-T2 is in the range of from 0 to 10° C.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: May 18, 2010
    Assignee: Dupont Teijin Films US Ltd.
    Inventors: William Alasdair MacDonald, Pierre Georges Osborne Moussalli, Kenneth Evans, Julian Peter Attard, David Boyce, Christopher Charles Naylor, Brian John Farmer, legal representative, David Edward Robins, legal representative
  • PEN-PET-PEN polymeric film
    Patent number: 6908686
    Abstract: A polymeric film comprising a first layer which comprises (a) a mixture comprising 50-99.9% by weight polyethylene terephthalate (PET) and 0.1-50% by weight of polyethylene naphthalate (PEN) or (b) a copolymer comprising 50-99.9% by weight ethylene terephthalate units and 0.1-50% by weight ethylene naphthalate units, based on the total weight of the first layer, further comprising a second layer comprising PEN and a third layer comprising PEN, and further comprising a first intermediate layer and a second intermediate layer, wherein each of said intermediate layers comprises (a) a mixture comprising 50-99.9% by weight polyethylene terephthalate (PET) and 0.1-50% by weight polyethylene naphthalate (PEN) or (b) a copolymer comprising 50-99.9% by weight ethylene terephthalate units and 0.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: June 21, 2005
    Assignee: DuPont Teijin Films U.S. Limited Partnership
    Inventors: Anton Richard Olek, Valerie M. Naylor, Christopher Charles Naylor
  • PEN-PET-PEN polymeric film
    Publication number: 20040101701
    Abstract: A polymeric film comprising a first layer which comprises (a) a mixture comprising 50-99.9% by weight polyethylene terephthalate (PET) and 0.1-50% by weight of polyethylene naphthalate (PEN) or (b) a copolymer comprising 50-99.9% by weight ethylene terephthalate units and 0.1-50% by weight ethylene naphthalate units, based on the total weight of the first layer, further comprising a second layer comprising PEN and a third layer comprising PEN, and further comprising a first intermediate layer and a second intermediate layer, wherein each of said intermediate layers comprises (a) a mixture comprising 50-99.9% by weight polyethylene terephthalate (PET) and 0.1-50% by weight polyethylene naphthalate (PEN) or (b) a copolymer comprising 50-99.9% by weight ethylene terephthalate units and 0.
    Type: Application
    Filed: November 26, 2002
    Publication date: May 27, 2004
    Inventors: Anton Richard Olek, Christopher Charles Naylor, Valerie Margaret Naylor