Patents by Inventor Dean Ruth

Dean Ruth 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).

  • Process and apparatus for purifying BNNT
    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
  • PROCESS AND APPARATUS FOR PURIFYING BNNT
    Publication number: 20210261414
    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: Application
    Filed: July 11, 2019
    Publication date: August 26, 2021
    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
  • Process and apparatus for synthesis of nanotubes
    Patent number: 7374730
    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: Grant
    Filed: March 26, 2002
    Date of Patent: May 20, 2008
    Assignee: National Research Council of Canada
    Inventors: Benoit Simard, Michael Barnett, Stéphane Dénommée, Dean Ruth
  • Process and apparatus for synthesis of nanotubes
    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