Patents by Inventor David O'Brien

David O'Brien 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: 11056621
    Abstract: An optoelectronic device is disclosed. In an embodiment an optoelectronic device includes a primary radiation source configured to emit an electromagnetic primary radiation during operation of the device and a conversion element arranged in a beam path of the electromagnetic primary radiation, wherein the conversion element includes quantum dots configured to at least partially convert the electromagnetic primary radiation into an electromagnetic secondary radiation during operation of the device, and wherein the quantum dots have a diameter of 50 nm inclusive to 500 nm inclusive.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: July 6, 2021
    Assignee: OSRAM OLED GMBH
    Inventors: Tansen Varghese, David O'Brien, Georg Roßbach
  • Publication number: 20210196160
    Abstract: Embodiments of a compact portable nuclear magnetic resonance (NMR) device are described which generally include a housing that provides a magnetic shield; an axisymmetric permanent magnet assembly in the housing and having a bore, a plurality of magnetic elements that together provide a well confined axisymmetric magnetization for generating a near-homogenous magnetic dipole field B0 directed along a longitudinal axis and providing a sample cavity for receiving a sample, and high magnetic permeability soft steel poles to improve field uniformity: a shimming assembly with coils disposed at the longitudinal axis for spatially correcting the near homogenous magnetic field B0; and a spectrometer having a control unit for measuring a metabolite in the sample by applying magnetic stimulus pulses to the sample, measuring free induction delay signals generated by an ensemble of hydrogen protons within the sample; and suppressing a water signal by using a dephasing gradient with frequency selective suppression.
    Type: Application
    Filed: March 13, 2021
    Publication date: July 1, 2021
    Inventor: David O'Brien
  • Publication number: 20210199736
    Abstract: Embodiments of a compact portable nuclear magnetic resonance (NMR) device are described which generally include a housing that provides a magnetic shield; an axisymmetric permanent magnet assembly in the housing and having a bore, a plurality of magnetic elements that together provide a well confined axisymmetric magnetization for generating a near-homogenous magnetic dipole field Bo directed along a longitudinal axis and providing a sample cavity for receiving a sample, and high magnetic permeability soft steel poles to improve field uniformity: a shimming assembly with coils disposed at the longitudinal axis for spatially correcting the near homogenous magnetic field Bo; and a spectrometer having a control unit for measuring a metabolite in the sample by applying magnetic stimulus pulses to the sample, measuring free induction delay signals generated by an ensemble of hydrogen protons within the sample; and suppressing a water signal by using a dephasing gradient with frequency selective suppression.
    Type: Application
    Filed: March 13, 2021
    Publication date: July 1, 2021
    Inventor: David O'Brien
  • Publication number: 20210196143
    Abstract: Embodiments of a compact portable nuclear magnetic resonance (NMR) device are described which generally include a housing that provides a magnetic shield; an axisymmetric permanent magnet assembly in the housing and having a bore, a plurality of magnetic elements that together provide a well confined axisymmetric magnetization for generating a near-homogenous magnetic dipole field B0 directed along a longitudinal axis and providing a sample cavity for receiving a sample, and high magnetic permeability soft steel poles to improve field uniformity: a shimming assembly with coils disposed at the longitudinal axis for spatially correcting the near homogenous magnetic field B0; and a spectrometer having a control unit for measuring a metabolite in the sample by applying magnetic stimulus pulses to the sample, measuring free induction delay signals generated by an ensemble of hydrogen protons within the sample; and suppressing a water signal by using a dephasing gradient with frequency selective suppression.
    Type: Application
    Filed: March 13, 2021
    Publication date: July 1, 2021
    Inventor: David O'Brien
  • Publication number: 20210177277
    Abstract: An implantable wireless sensor is provided that comprises a plurality of substrates joined together to form a body with a hermetically sealed cavity therein. A capacitor (C) is provided within the cavity. A first capacitor plate is formed on an internal surface of the first substrate. An inductor (L) is provided within the cavity and coupled to form an LC resonant circuit. At least a portion of the first substrate comprises a deflectable region mechanically coupled to the first capacitor plate. The deflectable region is configured to deflect in response to changes in pressure in the artery altering a spacing between the capacitor plates and altering a resonant frequency of the LC resonant circuit. First and second anchoring elements are coupled to the body and include flexible wire loops configured to extend outward from the body to lodge within a lumen of the artery.
    Type: Application
    Filed: February 25, 2021
    Publication date: June 17, 2021
    Inventors: Florent Cros, David O'Brien, Michael Fonseca, Matthew Abercrombie, Jin Woo Park, Angad Singh
  • Publication number: 20210177279
    Abstract: A system and method are provided to deploy an implant assembly in a vessel. The implant assembly comprises a pressure sensor having a body, and first and second anchoring members coupled to the body of the pressure sensor. A delivery apparatus comprises a shaft having proximal and distal ends, the shaft including a main lumen and a secondary lumen, the main lumen extending along at least a portion of the shaft. The secondary lumen extends along at least a portion of the length of the shaft, the secondary lumen joined with first and second ports provided in a sidewall of the shaft. A tether wire is configured to be slidably positioned within the secondary lumen, the tether wire having a distal portion configured to secure the implant assembly against the sidewall.
    Type: Application
    Filed: February 25, 2021
    Publication date: June 17, 2021
    Inventors: Florent Cros, David O'Brien, Michael Fonseca, Matthew Abercrombie, Jin Woo Park, Angad Singh
  • Publication number: 20210177278
    Abstract: A method and system are provided for determining a pressure associated with a lumen of a patient. A wireless sensor is positioned in the lumen of the patient. The sensor has a body with a pressure sensitive surface, including a sealed cavity that holds an inductive-capacitive (LC) resonant circuit. A capacitance of the LC resonant circuit is configured to vary in response to changes in pressure in the lumen. The LC resonant circuit has a charge time related to a quality factor (Q) of the LC resonant circuit. The LC resonant circuit is energized with an energizing signal during a measurement cycle. The energizing signal has a duty cycle with an on-time that is set, in part, based on the charge time. A ring down response is received from the wireless sensor. The ring down response is utilized to calculate the pressure associated with the lumen of the patient.
    Type: Application
    Filed: February 25, 2021
    Publication date: June 17, 2021
    Inventors: Florent Cros, David O'Brien, Michael Fonseca, Matthew Abercrombie, Jin Woo Park, Angad Singh
  • Patent number: 11033192
    Abstract: A pressure sensor is provided that comprises an upper wafer formed from a dielectric material, the upper wafer having channels. The upper wafer includes a first capacitor plate and a second capacitor plate formed on a lower surface of the upper wafer. An inductor is contained within the channels in the upper wafer in fixed relation to the first and second capacitor plates. A lower wafer is formed from the dielectric material. A third capacitor plate is formed on an inner surface of the lower wafer. The upper and lower wafers are fused together to form a monolithic housing such that the first and second capacitor plates are arranged in parallel, spaced-apart relation from the third capacitor plate. The lower wafer comprising a pressure sensitive deflective region underlying the third capacitor plate. The deflective region deflects in response to changes in ambient pressure in the medium.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: June 15, 2021
    Assignee: ST. JUDE MEDICAL LUXEMBOURG HOLDINGS II S.A.R.L. (“SJM LUX 11”)
    Inventors: Florent Cros, David O'Brien, Michael Fonseca, Matthew Abercrombie, Jin Woo Park, Angad Singh
  • Publication number: 20210151632
    Abstract: An optoelectronic device including a passivation layer and a method for manufacturing an optoelectronic device are disclosed. In an embodiment an optoelectronic device includes an optoelectronic semiconductor chip comprising optoelectronic semiconductor layers configured to generate electromagnetic radiation, the optoelectronic semiconductor layers having a first semiconductor layer from which the generated electromagnetic radiation is configured to be coupled out and a passivation layer in direct contact with a first main surface of the first semiconductor layer, wherein the passivation layer includes quantum dot particles configured to convert a wavelength of the electromagnetic radiation, wherein the passivation layer has a refractive index larger than 1.6, and wherein a surface of the passivation layer remote from the first semiconductor layer forms a first main surface of the optoelectronic device.
    Type: Application
    Filed: April 10, 2019
    Publication date: May 20, 2021
    Inventors: David O'BRIEN, Ivar TANGRING, Vesna MUELLER
  • Patent number: 11011683
    Abstract: An optoelectronic component and a method for producing an optoelectronic component are disclosed.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: May 18, 2021
    Assignee: OSRAM OLED GMBH
    Inventors: David O'Brien, Norwin von Malm, Jörg Frischeisen, Angela Eberhardt, Florian Peskoller
  • Publication number: 20210066522
    Abstract: A quantum dot structure, a radiation conversion element and a light emitting device are disclosed. In an embodiment a quantum dot structure includes an active region configured to emit radiation, a barrier region surrounding the active region and a trap region spaced apart from the active region, wherein a band edge of the trap region forms a trap configuration with respect to the barrier region for at least one type of charge carrier.
    Type: Application
    Filed: August 26, 2019
    Publication date: March 4, 2021
    Inventors: David O'Brien, Joseph Treadway
  • Publication number: 20210013381
    Abstract: A light emitting device is disclosed. In an embodiment a light-emitting device includes a pixel comprising at least three sub-pixels, wherein a first sub-pixel includes a first conversion element having a green phosphor, wherein a second sub-pixel includes a second conversion element having a red phosphor and wherein a third sub-pixel is free of a conversion element, the third sub-pixel configured to emit blue primary radiation, wherein each sub-pixel has an edge length of at most 100 ?m, and wherein the light-emitting device is configured to enhance a gamut coverage of an emitted radiation.
    Type: Application
    Filed: July 8, 2019
    Publication date: January 14, 2021
    Inventors: Benjamin Daniel Mangum, David O'Brien, Britta Göötz
  • Publication number: 20200403027
    Abstract: A component may include a semiconductor body and a converter layer. The converter layer may have phosphor particles and an electrically conductive matrix material where the phosphor particles are embedded in the matrix material. The converter layer may be arranged on the semiconductor body and may have a plurality of sublayers that are spatially set apart from one another and can be electrically contacted individually. The semiconductor body may have an active zone for producing electromagnetic radiation where the sublayers of the converter layer are designed for local electrical contacting of the active zone.
    Type: Application
    Filed: February 26, 2019
    Publication date: December 24, 2020
    Inventors: Vesna MUELLER, David O'BRIEN
  • Patent number: 10840416
    Abstract: The invention relates to an optoelectronic component (100) comprising a semiconductor chip (1) configured for emitting radiation, a conversion element (2) comprising quantum dots (5) and configured for wavelength conversion of radiation, wherein the conversion element (2) comprises a layer structure (7) having a plurality of inorganic barrier layers (31, 32, 33, 34), wherein the inorganic barrier layers (31, 32, 33, 34) are spatially separated from one another at least regionally by a hybrid polymer (4), wherein the hybrid polymer (4) comprises organic and inorganic regions that are covalently bonded to one another, wherein the quantum dots (5) are embedded in the hybrid polymer (4) and/or at least in one of the barrier layers (31, 32, 33, 34).
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: November 17, 2020
    Assignee: OSRAM OLED GmbH
    Inventors: David O'Brien, Georg Dirscherl
  • Publication number: 20200354919
    Abstract: A coupler for a work machine that has a first coupler hook pin defined along a hook pin axis, a first coupler engaging pin defined along a first axis, a second coupler engaging pin defined along a second axis, the second axis being different from the first axis. Wherein, the first coupler engaging pin is coupleable to a first device and the second coupler engaging pin is coupleable to a second device.
    Type: Application
    Filed: July 30, 2020
    Publication date: November 12, 2020
    Inventors: David O'Brien, Arun Narayanan, Jason Simmons
  • Patent number: 10815634
    Abstract: A coupler for a work machine that has a first coupler hook pin defined along a hook pin axis, a first coupler engaging pin defined along a first axis, a second coupler engaging pin defined along a second axis, the second axis being different from the first axis. Wherein, the first coupler engaging pin is coupleable to a first device and the second coupler engaging pin is coupleable to a second device.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: October 27, 2020
    Assignee: DEERE & COMPANY
    Inventors: David O'Brien, Arun Narayanan, Jason Simmons
  • Publication number: 20200287102
    Abstract: An optoelectronic component may include a radiation-emitting semiconductor chip configured to emit electromagnetic radiation and a phosphor mixture. The excitation spectrum may have a peak wavelength ranging from 435 nm to 460 nm. The phosphor mixture may have three phosphors configured to emit electromagnetic radiation in different spectral ranges.
    Type: Application
    Filed: September 25, 2018
    Publication date: September 10, 2020
    Inventors: Ralph Peter Bertram, David O'Brien, Rainer Butendeich
  • Publication number: 20200287097
    Abstract: An optoelectronic component is disclosed. In an embodiment an optoelectronic component includes a semiconductor chip configured to emit radiation and a conversion element including quantum dots, the conversion element configured to convert a wavelength of the radiation, wherein each quantum dot includes a wavelength-converting core and an inorganic encapsulation, wherein inorganic encapsulations form a matrix material of at least adjacent quantum dots, and wherein the adjacent quantum dots have a distance of at least 10 nm.
    Type: Application
    Filed: September 6, 2018
    Publication date: September 10, 2020
    Inventor: David O'Brien
  • Publication number: 20200270839
    Abstract: A coupler for a work machine that has a first coupler hook pin defined along a hook pin axis, a first coupler engaging pin defined along a first axis, a second coupler engaging pin defined along a second axis, the second axis being different from the first axis. Wherein, the first coupler engaging pin is coupleable to a first device and the second coupler engaging pin is coupleable to a second device.
    Type: Application
    Filed: February 26, 2019
    Publication date: August 27, 2020
    Inventors: David O'Brien, Arun Narayanan, Jason Simmons
  • Publication number: 20200243728
    Abstract: An optoelectronic semiconductor chip may include an active region configured to emit electromagnetic radiation during operation of said optoelectronic semiconductor chip. The optoelectronic semiconductor chip comprises conversion elements arranged to convert the wavelength of the electromagnetic radiation emitted by the active region during operation, and at least one barrier at least partially impermeable to the electromagnetic radiation emitted by the active region. The barrier is disposed in a lateral direction between the conversion elements, the lateral direction being parallel to the main extension plane of the semiconductor body, and the barrier extending transversely to the lateral direction. The active region has at least two emission regions which can be driven separately from each other, and each of the conversion elements is disposed in a radiation direction of the electromagnetic radiation emitted from one of the emission regions.
    Type: Application
    Filed: October 16, 2018
    Publication date: July 30, 2020
    Inventors: David O'Brien, Desiree Queren, David Racz, Britta Goeoetz, Michael Schumann