Patents by Inventor Douglas Shephard

Douglas Shephard 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).

  • CVD synthesis of carbon nanotubes
    Patent number: 8173211
    Abstract: A method of production of carbon nanoparticles comprises the steps of: providing on substrate particles a transition metal compound which is decomposable to yield the transition metal under conditions permitting carbon nanoparticle formation, contacting a gaseous carbon source with the substrate particles, before, during or after said contacting step, decomposing the transition metal compound to yield the transition metal on the substrate particles, forming carbon nanoparticles by decomposition of the carbon source catalysed by the transition metal, and collecting the carbon nanoparticles formed.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: May 8, 2012
    Assignee: Cambridge University Technical Services Limited
    Inventors: Milo Sebastian Peter Shaffer, Alan H. Windle, Brian F. G. Johnson, Junfeng Geng, Douglas Shephard, Charanjeet Singh
  • CVD synthesis of carbon nanotubes
    Publication number: 20060104884
    Abstract: A method of production of carbon nanoparticles comprises the steps of: providing on substrate particles a transition metal compound which is decomposable to yield the transition metal under conditions permitting carbon nanoparticle formation, contacting a gaseous carbon source with the substrate particles, before, during or after said contacting step, decomposing the transition metal compound to yield the transition metal on the substrate particles, forming carbon nanoparticles by decomposition of the carbon source catalysed by the transition metal, and collecting the carbon nanoparticles formed.
    Type: Application
    Filed: July 16, 2003
    Publication date: May 18, 2006
    Applicant: Cambridge University Technical Services Limited
    Inventors: Milo Shaffer, Alan Windle, Brian Johnson, Junfeng Geng, Douglas Shephard, Chanranjeet Singh