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).
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Publication number: 20250189603Abstract: 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: ApplicationFiled: February 17, 2024Publication date: June 12, 2025Inventors: David Glenn, Cole Meisenhelder, Stephen DeVience, Connor Hart, Aakash Ravi
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Patent number: 12276624Abstract: 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: GrantFiled: June 1, 2022Date of Patent: April 15, 2025Assignees: University of Maryland, College Park, The President and Fellows of Harvard College, North Carolina State UniversityInventors: Ronald Walsworth, Nithya Arunkumar, Dominik Bucher, Matthew Turner, David Glenn, Matthew S. Rosen, Thomas Theis
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Publication number: 20250060431Abstract: 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: ApplicationFiled: August 19, 2024Publication date: February 20, 2025Inventors: David Glenn, Cole Meisenhelder
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Patent number: 11940399Abstract: 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: GrantFiled: June 1, 2022Date of Patent: March 26, 2024Assignees: University of Maryland, College Park, The President and Fellows of Harvard CollegeInventors: Ronald Walsworth, Nithya Arunkumar, Connor Hart, Dominik Bucher, David Glenn
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Publication number: 20230084726Abstract: 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: ApplicationFiled: June 1, 2022Publication date: March 16, 2023Inventors: Ronald Walsworth, Nithya Arunkumar, Connor Hart, Dominik Bucher, David Glenn
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Publication number: 20230081886Abstract: 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: ApplicationFiled: June 1, 2022Publication date: March 16, 2023Inventors: Ronald Walsworth, Nithya Arunkumar, Dominik Bucher, Matthew Turner, David Glenn, Matthew S. Rosen, Thomas Theis
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Patent number: 10901062Abstract: 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: GrantFiled: May 24, 2017Date of Patent: January 26, 2021Assignee: President and Fellows of Harvard CollegeInventors: Ronald L. Walsworth, David Glenn, Dominik Bucher
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Publication number: 20200278414Abstract: 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: ApplicationFiled: May 24, 2017Publication date: September 3, 2020Applicants: President and Fellows of Harvard College, President and Fellows of Harvard CollegeInventors: Ronald L. WALSWORTH, David GLENN, Dominik BUCHER
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Patent number: 9541512Abstract: 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: GrantFiled: June 13, 2012Date of Patent: January 10, 2017Assignee: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Ronald Walsworth, Jeff Lichtman, Narayanan Kasthuri, David Glenn, Huiliang Zhang, Richard Schalek
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Publication number: 20140194314Abstract: 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: ApplicationFiled: June 13, 2012Publication date: July 10, 2014Applicant: President And Fellows of Harvard CollegeInventors: Ronald Walsworth, Jeff Lichtman, Narayanan Kasthuri, David Glenn, Huiliang Zhang, Richard Schalek
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Publication number: 20070037712Abstract: 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: ApplicationFiled: August 11, 2006Publication date: February 15, 2007Applicant: BASF Catalysts LLCInventors: John Mosko, Richard Pluta, David Glenn, Gary Puterka
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Publication number: 20070037711Abstract: 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: ApplicationFiled: August 10, 2006Publication date: February 15, 2007Applicant: Engelhard CorporationInventors: Richard Pluta, David Glenn, Gary Puterka, John Mosko
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Publication number: 20060181262Abstract: 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: ApplicationFiled: December 16, 2004Publication date: August 17, 2006Inventors: David Glenn, Gretchen Matthern, W Propp, Anne Glenn, Peter Shaw
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Publication number: 20050016895Abstract: 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: ApplicationFiled: July 24, 2003Publication date: January 27, 2005Inventor: David Glenn
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Patent number: PP21401Abstract: 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: GrantFiled: July 22, 2009Date of Patent: October 19, 2010Inventor: David Glenn
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Patent number: PP28734Abstract: 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: GrantFiled: August 1, 2016Date of Patent: December 5, 2017Inventor: David Glenn