Patents by Inventor Samuel Carter

Samuel Carter 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).

  • Publication number: 20220010055
    Abstract: The present disclosure provides organic compounds having pseudocapacitive performance and methods of preparing said compounds. The organic compounds can include perylene diamine (PDI) subunits and hexaazatrinaphthylene (HATN) subunits.
    Type: Application
    Filed: February 19, 2021
    Publication date: January 13, 2022
    Applicant: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
    Inventors: Colin Nuckolls, Xavier Roy, Jake Carter Russell, Samuel R. Peurifoy
  • Patent number: 11150495
    Abstract: A technique is described to deterministically tune the emission frequency of individual semiconductor photon sources, for example quantum dots. A focused laser is directed at a film of material that changes form when heated (for example, a phase change material that undergoes change between crystal and amorphous forms) overlaid on a photonic membrane that includes the photon sources. The laser causes a localized change in form in the film, resulting in a change in emission frequency of a photon source.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: October 19, 2021
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Joel Q. Grim, Allan S. Bracker, Samuel Carter, Daniel Gammon
  • Patent number: 10921519
    Abstract: Emission frequency of quantum dots in a photonic crystal membrane can be tuned by laser light treatment. For example, a focused laser can heat InAs quantum dots embedded within a <200 nm photonic crystal GaAs membrane. At temperatures above about 600° C., indium atoms from the quantum dots and gallium atoms from the membrane interdiffuse, alloying the quantum dots with the surrounding membrane. This causes the quantum dots to become more gallium rich, which shifts the emission to higher frequencies.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: February 16, 2021
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Joel Q. Grim, Samuel Carter, Allan S. Bracker, Daniel Gammon
  • Publication number: 20190369420
    Abstract: A technique is described to deterministically tune the emission frequency of individual semiconductor photon sources, for example quantum dots. A focused laser is directed at a film of material that changes form when heated (for example, a phase change material that undergoes change between crystal and amorphous forms) overlaid on a photonic membrane that includes the photon sources. The laser causes a localized change in form in the film, resulting in a change in emission frequency of a photon source.
    Type: Application
    Filed: May 24, 2019
    Publication date: December 5, 2019
    Inventors: Joel Q. Grim, Allan S. Bracker, Samuel Carter, Daniel Gammon
  • Publication number: 20190079245
    Abstract: Emission frequency of quantum dots in a photonic crystal membrane can be tuned by laser light treatment. For example, a focused laser can heat InAs quantum dots embedded within a <200 nm photonic crystal GaAs membrane. At temperatures above about 600° C., indium atoms from the quantum dots and gallium atoms from the membrane interdiffuse, alloying the quantum dots with the surrounding membrane. This causes the quantum dots to become more gallium rich, which shifts the emission to higher frequencies.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 14, 2019
    Inventors: Joel Q. Grim, Samuel Carter, Allan S. Bracker, Daniel Gammon
  • Patent number: 9671672
    Abstract: A solid-state device for generating a single photon for quantum information processing, the device including: a quantum dot molecule including: a first singly-charged quantum dot; and a second singly-charged quantum dot; wherein the first singly-charged quantum dot is adjacent to the second singly-charged quantum dot; and a tunnel barrier that separates the first singly-charged quantum dot from the second singly-charged quantum dot.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: June 6, 2017
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Daniel Gammon, Samuel Carter, Allan S. Bracker, Patrick Vora
  • Patent number: 9619754
    Abstract: A solid-state device for generating a single photon for quantum information processing, the device including: a quantum dot molecule including: a first singly-charged quantum dot; and a second singly-charged quantum dot; wherein the first singly-charged quantum dot is adjacent to the second singly-charged quantum dot; and a tunnel barrier that separates the first singly-charged quantum dot from the second singly-charged quantum dot.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: April 11, 2017
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Daniel Gammon, Samuel Carter, Allan S. Bracker, Patrick Vora
  • Publication number: 20160048769
    Abstract: A solid-state device for generating a single photon for quantum information processing, the device including: a quantum dot molecule including: a first singly-charged quantum dot; and a second singly-charged quantum dot; wherein the first singly-charged quantum dot is adjacent to the second singly-charged quantum dot; and a tunnel barrier that separates the first singly-charged quantum dot from the second singly-charged quantum dot.
    Type: Application
    Filed: August 10, 2015
    Publication date: February 18, 2016
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Daniel Gammon, Samuel Carter, Allan S. Bracker, Patrick Vora
  • Patent number: 7380789
    Abstract: The application is directed to methods for moving a media sheet through the media path of an image forming device. In one embodiment, the media sheet may be moved by a pick mechanism having a pick roll from an input tray. The pick roll in the input tray may maintain contact with the media sheet and drive the sheet at a first elevated speed as it moves towards the nip. The pick roll may then slow as it brings the leading edge into contact with the nip. This slower speed may reduce the amount of nip shock or compression that may cause reengagement of the pick mechanism and an unintentional double sheet feed. Moving the media sheet at the fast speed a majority of the distance along the media path between the input tray and nip may increase media throughput.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: June 3, 2008
    Assignee: Lexmark International, Inc.
    Inventors: Niko Jay Murrell, Samuel Carter Sipper, William Paul Cook, Thomas George Fleming
  • Patent number: 7050734
    Abstract: A method of determining a relative speed between two separately driven members in an image forming apparatus, includes the steps of: transporting a print medium using a print media transport assembly including an exit nip, the print media transport assembly operable at a first transport speed; driving a rotatable member associated with an entrance nip using an electric motor at a second transport speed which is independent from the first transport speed; transferring the print medium from the exit nip to the entrance nip; detecting an electrical characteristic of the motor when the print medium is present in each of the exit nip and the entrance nip; and determining a relative speed between the first transport speed and the second transport speed.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: May 23, 2006
    Assignee: Lexmark International, Inc.
    Inventors: John William Kietzman, Calvin Dale Murphy, Gregory Lawrence Ream, Brian Anthony Reichert, Samuel Carter Sipper