Patents by Inventor Debasis Bera

Debasis Bera 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: 11031530
    Abstract: Embodiments of the invention include a light emitting device, a first wavelength converting material, and a second wavelength converting material. The first wavelength converting material includes a nanostructured wavelength converting material. The nanostructured wavelength converting material includes particles having at least one dimension that is no more than 100 nm in length. The first wavelength converting material is spaced apart from the light emitting device.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: June 8, 2021
    Assignee: Lumileds LLC
    Inventors: Debasis Bera, Mark Melvin Butterworth, Oleg Borisovich Shchekin
  • Publication number: 20190326483
    Abstract: Embodiments of the invention include a light emitting device, a first wavelength converting material, and a second wavelength converting material. The first wavelength converting material includes a nanostructured wavelength converting material. The nanostructured wavelength converting material includes particles having at least one dimension that is no more than 100 nm in length. The first wavelength converting material is spaced apart from the light emitting device.
    Type: Application
    Filed: July 5, 2019
    Publication date: October 24, 2019
    Inventors: Debasis BERA, Mark Melvin BUTTERWORTH, Oleg Borisovich SHCHEKIN
  • Patent number: 10347800
    Abstract: Embodiments of the invention include a light emitting device, a first wavelength converting material, and a second wavelength converting material. The first wavelength converting material includes a nanostructured wavelength converting material. The nanostructured wavelength converting material includes particles having at least one dimension that is no more than 100 nm in length. The first wavelength converting material is spaced apart from the light emitting device.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: July 9, 2019
    Assignee: LUMILEDS LLC
    Inventors: Debasis Bera, Mark Melvin Butterworth, Oleg Borisovich Shchekin
  • Publication number: 20170162761
    Abstract: Embodiments of the invention include a light emitting device, a first wavelength converting material, and a second wavelength converting material. The first wavelength converting material includes a nanostructured wavelength converting material. The nanostructured wavelength converting material includes particles having at least one dimension that is no more than 100 nm in length. The first wavelength converting material is spaced apart from the light emitting device.
    Type: Application
    Filed: February 23, 2017
    Publication date: June 8, 2017
    Inventors: Debasis Bera, Mark Melvin Butterworth, Oleg Borisovich Shchekin
  • Patent number: 9634201
    Abstract: Embodiments of the invention include a light emitting device (LED 10), a first wavelength converting material (13, in a matrix 14 to form a layer 12), and a second wavelength converting material (forming layer 16). The first wavelength converting material includes a nanostructured wavelength converting material. The nanostructured wavelength converting material includes particles having at least one dimension that is no more than 100 nm in length. The first wavelength converting material (13) is spaced apart from the light emitting device (10).
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: April 25, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Debasis Bera, Mark Melvin Butterworth, Oleg Borisovich Shchekin
  • Publication number: 20150129916
    Abstract: Embodiments of the invention include a light emitting device (LED 10), a first wavelength converting material (13, in a matrix 14 to form a layer 12), and a second wavelength converting material (forming layer 16). The first wavelength converting material includes a nanostructured wavelength converting material. The nanostructured wavelength converting material includes particles having at least one dimension that is no more than 100 nm in length. The first wavelength converting material (13) is spaced apart from the light emitting device (10).
    Type: Application
    Filed: May 2, 2013
    Publication date: May 14, 2015
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Debasis Bera, Mark Melvin Butterworth, Oleg Borisovich Shchekin
  • Patent number: 7968072
    Abstract: A novel method for simultaneously forming and filling and decorating carbon nanotubes with palladium nanoparticles is disclosed. Synthesis involves preparing a palladium chloride (PdCl2) solution in a container, having two graphite electrodes, then immersing the graphite electrode assembly, into the PdCl2 solution; connecting the graphite electrodes to a direct current power supply; bringing the electrodes into contact with each other to strike an arc; separating the electrodes to sustain the arc inside the solution; putting the container with electrode assembly in a water-cooled bath; and collecting Pd-nanoparticles encapsulated in carbon nanotubes and carbon nanotubes decorated with Pd-nanoparticles. The temperature at the site of the arc-discharge is greater than 3000° C. At these temperatures, the palladium is ionized into nanoparticles and the graphite electrodes generate layers of graphene (carbon), which roll away from the anode and encapsulate or entrap the Pd-nanoparticles.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: June 28, 2011
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Sudipta Seal, Debasis Bera, Suresh C. Kuiry, Meyya Meyyappan, Matthew Luke McCutchen
  • Publication number: 20090072192
    Abstract: A novel method for simultaneously forming and filling and decorating carbon nanotubes with palladium nanoparticles is disclosed. Synthesis involves preparing a palladium chloride (PdCl2) solution in a container, having two graphite electrodes, then immersing the graphite electrode assembly, into the PdCl2 solution; connecting the graphite electrodes to a direct current power supply; bringing the electrodes into contact with each other to strike an arc; separating the electrodes to sustain the arc inside the solution; putting the container with electrode assembly in a water-cooled bath; and collecting Pd-nanoparticles encapsulated in carbon nanotubes and carbon nanotubes decorated with Pd-nanoparticles. The temperature at the site of the arc-discharge is greater than 3000° C. At these temperatures, the palladium is ionized into nanoparticles and the graphite electrodes generate layers of graphene (carbon), which roll away from the anode and encapsulate or entrap the Pd-nanoparticles.
    Type: Application
    Filed: August 26, 2008
    Publication date: March 19, 2009
    Inventors: Sudipta Seal, Debasis Bera, Suresh C. Kuiry, Meyya Meyyappan, Matthew Luke McCutchen
  • Patent number: 7438885
    Abstract: A novel method for simultaneously forming and filling and decorating carbon nanotubes with palladium nanoparticles is disclosed. Synthesis involves preparing a palladium chloride (PdCl2) solution in a container, having two graphite electrodes, then immersing the graphite electrode assembly, into the PdCl2 solution; connecting the graphite electrodes to a direct current power supply; bringing the electrodes into contact with each other to strike an arc; separating the electrodes to sustain the arc inside the solution; putting the container with electrode assembly in a water-cooled bath; and collecting Pd-nanoparticles encapsulated in carbon nanotubes and carbon nanotubes decorated with Pd-nanoparticles. The temperature at the site of the arc-discharge is greater than 3000° C. At these temperatures, the palladium is ionized into nanoparticles and the graphite electrodes generate layers of graphene (carbon), which roll away from the anode and encapsulate or entrap the Pd-nanoparticles.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: October 21, 2008
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Sudipta Seal, Suresh C. Kuiry, Debasis Bera, Meyya Meyyappan, Matthew Luke McCutchen