Patents by Inventor Stephane Denommee

Stephane Denommee 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).

  • Patent number: 12172889
    Abstract: Provided is a process and an apparatus for purifying boron nitride nanotube (BNNT) materials. The process involves the use of a halogen gas to remove halogen-reactive impurities from boron nitride nanotube (BNNT) materials in a single step with minimal interactions to produce structurally pristine BNNT. Gaseous byproducts are produced that 5 can be removed without the need for solution phase treatments. Yield efficiencies and purity of recovered BNNT are high compared to the other known methods of purification for BNNT material.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: December 24, 2024
    Inventors: Benoit Simard, Keith Ingold, Steven Kendrick Walker, Robyn Iannitto, Hyunjin Cho, Yadienka Martinez-Rubi, Keun Su Kim, Christopher Kingston, Jingwen Guan, Stephane Denommee, Dean Ruth, Mark Plunkett
  • Patent number: 8834827
    Abstract: An integrated method and apparatus to continuously produce purified Single Wall Carbon Nanotubes (SWNT) from a continuous supply of solid carbon powder fed to an induction plasma torch. The apparatus includes a reactor body disposed to maintain laminar flow of gases with the torch body and coupled to a quenching body where temperature and residence time is controlled. Conveniently, functionalization may take place in the quenching body. The torch is operated with an argon carrier gas, an argon stabilizing gas and a helium sheath gas. Solid carbon reactants are preferably mixed with at least two metal catalysts containing nickel and cobalt with additional metal oxides of yttrium and cerium being desirable.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: September 16, 2014
    Assignees: National Research Council of Canada, Universite de Sherbrooke
    Inventors: Benoit Simard, Christopher Thomas Kingston, Stephane Denommee, Gervais Soucy, German Cota Sanchez
  • Patent number: 8288457
    Abstract: Epoxy resins are chemically attached to carbon nanotubes (CNTs), in a one-step process in which a reaction mixture comprising the epoxy polymer, the CNTs and a bridging agent which is a chemical compound capable of forming living polymers, e.g. styrene or MMA is formed and radical formation is initiated in the reaction mixture; the epoxy polymer or monomer grafts onto the CNTs through the intermediary block of the bridging agent.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: October 16, 2012
    Assignee: National Research Council of Canada
    Inventors: Benoit Simard, Jingwen Guan, Stephane Dénommée
  • Publication number: 20100069604
    Abstract: Epoxy resins are chemically attached to carbon nanotubes (CNTs), in a one-step process in which a reaction mixture comprising the epoxy polymer, the CNTs and a bridging agent which is a chemical compound capable of forming living polymers, e.g. styrene or MMA is formed and radical formation is initiated in the reaction mixture; the epoxy polymer or monomer grafts onto the CNTs through the intermediary block of the bridging agent.
    Type: Application
    Filed: February 28, 2008
    Publication date: March 18, 2010
    Applicant: NATIONAL RESEARCH COUNCIL OF CANADA
    Inventors: Benoit Simard, Jingwen Guan, Stephane Dénommée
  • Publication number: 20040109814
    Abstract: The invention relates to a process for formation of carbon nanotubes. The process comprises laser ablation of a bulk metal catalyst within a hydrocarbon solution to produce a feedstock containing metal catalyst nanoparticles. The feedstock is atomizing to form a feedstock aerosol. The aerosol is heated to form naotubes. An apparatus for forming carbon nanotubes is also disclosed. Nanoparticles formed in the feedstock according to the invention can be controlled to achieve a narrow size distribution, which ultimately allows for good control over size and chirality of the nanotubes formed.
    Type: Application
    Filed: January 26, 2004
    Publication date: June 10, 2004
    Inventors: Benoit Simard, Michael Barnett, Stephane Denommee, Dean Ruth