Patents by Inventor David Glenn

David Glenn 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: 20250189603
    Abstract: A solid-state spin sensor system for precisely measuring magnetic fields with a compliantly coupled sensor head exhibiting translational and rotational compliance is disclosed. The sensor includes a color center ensemble in a solid-state substrate for detecting magnetic fields with high spatial resolution. An optical microscope, in conjunction with an optical driving system, facilitates viewing and spin polarization of the color center ensemble. A magnetic field generator ensures biasing of the ensemble for better sensitivity, and a microwave driving system induces spin transitions within the ensemble. Actuation is controlled by a system responsive to force data or image data for precise positioning of the color center ensemble focally and in contact with a sample. The system generates a spatially resolved map of a magnetic field through analysis of fluorescence data.
    Type: Application
    Filed: February 17, 2024
    Publication date: June 12, 2025
    Inventors: David Glenn, Cole Meisenhelder, Stephen DeVience, Connor Hart, Aakash Ravi
  • Patent number: 12276624
    Abstract: Systems and methods of quantum sensing include depositing a sample volume onto an ensemble of quantum defects, hyperpolarizing spins in the sample volume, performing a sensing sequence, and reading out information regarding electronic spin states of the quantum defects in the ensemble of quantum defects, which sense the hyperpolarized spins in the sample volume.
    Type: Grant
    Filed: June 1, 2022
    Date of Patent: April 15, 2025
    Assignees: University of Maryland, College Park, The President and Fellows of Harvard College, North Carolina State University
    Inventors: Ronald Walsworth, Nithya Arunkumar, Dominik Bucher, Matthew Turner, David Glenn, Matthew S. Rosen, Thomas Theis
  • Publication number: 20250060431
    Abstract: A solid-state spin sensor system for battery inspection is disclosed for detecting magnetic fields generated by currents within a battery. The system comprises a solid-state substrate, typically diamond, embedded with an ensemble of color centers such as a nitrogen-vacancy centers. It includes a magnetic field generator to provide a bias magnetic field, an optical driving system to optically excite the defect, and an optical sensor to measure the fluorescence intensity. The control system controls the current flowing between the battery terminals and generates a spatially resolved map of the magnetic field produced by this current, allowing for the identification of defects.
    Type: Application
    Filed: August 19, 2024
    Publication date: February 20, 2025
    Inventors: David Glenn, Cole Meisenhelder
  • Patent number: 11940399
    Abstract: Systems and methods of quantum sensing include obtaining information regarding a target signal in electronic spin states of quantum defects in an ensemble of quantum defects, mapping the information regarding the target signal from the electronic spin states of the quantum defects to corresponding nuclear spin states associated with the quantum defects, applying a light pulse to the ensemble of quantum defects to reset the electronic spin states of the quantum defects, and repeating a readout stage a plurality of times within a readout duration. The readout stage includes mapping the information regarding the target signal back from the nuclear spin states to the corresponding electronic spin states and applying a data acquisition readout pulse to optically measure the electronic spin states of the quantum defects.
    Type: Grant
    Filed: June 1, 2022
    Date of Patent: March 26, 2024
    Assignees: University of Maryland, College Park, The President and Fellows of Harvard College
    Inventors: Ronald Walsworth, Nithya Arunkumar, Connor Hart, Dominik Bucher, David Glenn
  • Publication number: 20230084726
    Abstract: Systems and methods of quantum sensing include obtaining information regarding a target signal in electronic spin states of quantum defects in an ensemble of quantum defects, mapping the information regarding the target signal from the electronic spin states of the quantum defects to corresponding nuclear spin states associated with the quantum defects, applying a light pulse to the ensemble of quantum defects to reset the electronic spin states of the quantum defects, and repeating a readout stage a plurality of times within a readout duration. The readout stage includes mapping the information regarding the target signal back from the nuclear spin states to the corresponding electronic spin states and applying a data acquisition readout pulse to optically measure the electronic spin states of the quantum defects.
    Type: Application
    Filed: June 1, 2022
    Publication date: March 16, 2023
    Inventors: Ronald Walsworth, Nithya Arunkumar, Connor Hart, Dominik Bucher, David Glenn
  • Publication number: 20230081886
    Abstract: Systems and methods of quantum sensing include depositing a sample volume onto an ensemble of quantum defects, hyperpolarizing spins in the sample volume, performing a sensing sequence, and reading out information regarding electronic spin states of the quantum defects in the ensemble of quantum defects, which sense the hyperpolarized spins in the sample volume.
    Type: Application
    Filed: June 1, 2022
    Publication date: March 16, 2023
    Inventors: Ronald Walsworth, Nithya Arunkumar, Dominik Bucher, Matthew Turner, David Glenn, Matthew S. Rosen, Thomas Theis
  • Patent number: 10901062
    Abstract: A synchronized readout (SR) technique for spectrally selective detection of oscillating magnetic fields with sub-millihertz resolution, using coherent manipulation of solid state spins.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: January 26, 2021
    Assignee: President and Fellows of Harvard College
    Inventors: Ronald L. Walsworth, David Glenn, Dominik Bucher
  • Publication number: 20200278414
    Abstract: A synchronized readout (SR) technique for spectrally selective detection of oscillating magnetic fields with sub-millihertz resolution, using coherent manipulation of solid state spins.
    Type: Application
    Filed: May 24, 2017
    Publication date: September 3, 2020
    Applicants: President and Fellows of Harvard College, President and Fellows of Harvard College
    Inventors: Ronald L. WALSWORTH, David GLENN, Dominik BUCHER
  • Patent number: 9541512
    Abstract: Multi-color CL images of nanoparticle samples may be generated, by irradiating with a scanning electron beam a nanoparticle sample that containing a plurality of spectrally distinct optical emitters configured to generate CL light at respective different color channels, then detecting the CL light from the nanoparticles to generate multi-color NP-CL images of the nanoparticle sample. In some embodiments, SE (secondary electron) images of the sample may be acquire, substantially simultaneously with the acquisition of the CL images, so as to generate correlative NP-CL and SE images of the nanoparticle sample. In some embodiments, the nanoparticles may be surface-functionalized so that the nanoparticles selectively bind only to particular structures of interest.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: January 10, 2017
    Assignee: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Ronald Walsworth, Jeff Lichtman, Narayanan Kasthuri, David Glenn, Huiliang Zhang, Richard Schalek
  • Publication number: 20140194314
    Abstract: Multi-color CL images of nanoparticle samples may be generated, by irradiating with a scanning electron beam a nanoparticle sample that containing a plurality of spectrally distinct optical emitters configured to generate CL light at respective different color channels, then detecting the CL light from the nanoparticles to generate multi-color NP-CL images of the nanoparticle sample. In some embodiments, SE (secondary electron) images of the sample may be acquire, substantially simultaneously with the acquisition of the CL images, so as to generate correlative NP-CL and SE images of the nanoparticle sample. In some embodiments, the nanoparticles may be surface-functionalized so that the nanoparticles selectively bind only to particular structures of interest.
    Type: Application
    Filed: June 13, 2012
    Publication date: July 10, 2014
    Applicant: President And Fellows of Harvard College
    Inventors: Ronald Walsworth, Jeff Lichtman, Narayanan Kasthuri, David Glenn, Huiliang Zhang, Richard Schalek
  • Publication number: 20070037712
    Abstract: The present composition is capable of forming a particle film and comprises: (a) less than 99.65% by weight of at least one particle; (b) at least one volumizing agent selected from the group consisting of: (i) cellulose selected from the group consisting of ethyl hydroxy ethyl cellulose, hydroxy ethyl cellulose, hydroxy propyl cellulose, hydroxy ethyl methyl cellulose, hydroxy propyl methyl cellulose, methyl cellulose, ethyl cellulose, and ethyl methyl cellulose and present in an amount greater than 0.35% by weight; and (ii) non-cellulosic component or cellulose other than said cellulose (i) present in an amount of at least 0.05% by weight; and optionally (c) at least one spreader. The composition may be used to form agricultural films.
    Type: Application
    Filed: August 11, 2006
    Publication date: February 15, 2007
    Applicant: BASF Catalysts LLC
    Inventors: John Mosko, Richard Pluta, David Glenn, Gary Puterka
  • Publication number: 20070037711
    Abstract: The present composition comprises: (a) 99.80% by weight or less of at least one particle; (b) film forming spreading agent present in an amount of: (i) equal to or greater than 0.20% by weight if a spreader inhibitor is not present or (ii) equal to or greater than about 0.35% by weight if a spreader inhibitor is present; and optionally (c) at least one volumization agent. The present composition may be used in agricultural compositions and in non-agricultural uses.
    Type: Application
    Filed: August 10, 2006
    Publication date: February 15, 2007
    Applicant: Engelhard Corporation
    Inventors: Richard Pluta, David Glenn, Gary Puterka, John Mosko
  • Publication number: 20060181262
    Abstract: A method and apparatus for determining spatial locations of defects in a material are described. The method includes providing a plurality of electrodes in contact with a material, applying a sinusoidal voltage to a select number of the electrodes at a predetermined frequency, determining gain and phase angle measurements at other of the electrodes in response to applying the sinusoidal voltage to the select number of electrodes, determining impedance values from the gain and phase angle measurements, computing an impedance spectrum for an area of the material from the determined impedance values, and comparing the computed impedance spectrum with a known impedance spectrum to identify spatial locations of defects in the material.
    Type: Application
    Filed: December 16, 2004
    Publication date: August 17, 2006
    Inventors: David Glenn, Gretchen Matthern, W Propp, Anne Glenn, Peter Shaw
  • Publication number: 20050016895
    Abstract: A travel case for transporting insulin is provided with an outer bottle with an outer bottle cap, an inner bottle with an inner bottle cap, fins, and a means to thermally insulate the outer bottle. The inner bottle is located within the outer bottle. The fins are attached to and protrude radially from the inner bottle, thus acting to keep the inner bottle centrally located within and relative to the outer bottle, as well as to keep the inner bottle in a substantially upright position within the outer bottle. The inner bottle is adapted to receive one or more bottles of insulin. In use, ice is added to the outer bottle between the fins, the ice acting as a heat sink to keep the insulin bottles cold within the inner bottle.
    Type: Application
    Filed: July 24, 2003
    Publication date: January 27, 2005
    Inventor: David Glenn
  • Patent number: PP21401
    Abstract: A new cultivar of Euphorbia plant named ‘ASCOT RAINBOW’ that is distinguishable by compact slightly spreading habit, red stems, and variegated cream-yellow and gray-green foliage that turns red-pink with the onset of winter. In combination these traits set ‘ASCOT RAINBOW’ apart from all other existing varieties of Euphorbia known to the inventor.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: October 19, 2010
    Inventor: David Glenn
  • Patent number: PP28734
    Abstract: A new and distinct Euphorbia characias cultivar named ‘LAMB01’ is disclosed, characterized by variegated foliage and a free flowering habit. Plants are uniquely bushy in habit. The new variety is a Euphorbia hybrid, typically used for ornamental horticulture purposes.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: December 5, 2017
    Inventor: David Glenn