Patents by Inventor David Stewart

David Stewart 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: 11406929
    Abstract: To provide a new compound with pores finely tunable in size so as to take up a specific element and release the specific element taken up in the pores as necessary, a synthesis method of the new compound, and a separation and recovery agent. The new compound represented by the following molecular formula: (NH4)[Ln(C2O4)2(H2O)] wherein Ln represents a lanthanide selected from Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb, and Lu.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: August 9, 2022
    Assignee: Japan Atomic Energy Agency
    Inventors: Takuya Nankawa, Matthew Rosseinsky, David Stewart, Alexandros Katsoulidis
  • Publication number: 20220231718
    Abstract: A portable worksite monitoring and communication device, including a weatherproof sealed container, further comprising, a container portion having an internal cavity, a removable cover arranged to lockably seal the internal cavity, and a heat sink opening, a heat sink apparatus sealably secured within the heat sink opening, a plurality of electronic connectors, a computing device in communication with a cellular modem, the cellular modem in communication with a cloud network, the computing device in communication with the plurality of electronic connectors, a display in communication with the computing device, and, a plurality of communication configurations in communication with the computing device, wherein the heat sink apparatus is arranged to programmably activate or automatically activate.
    Type: Application
    Filed: January 21, 2022
    Publication date: July 21, 2022
    Inventors: David Stewart, Joseph Thomas Jones Stewart, II
  • Publication number: 20220220820
    Abstract: A downhole actuator (16) includes a piston (15) within a chamber (17) on which fluid can act on either side to hydraulically activate the actuator. A hydrostatic equilibrium device (18) and a valve (14) are mounted around the hydraulic actuator. With a radial port (28) of the hydrostatic equilibrium device closed and the valve closed to seal the string, pumping fluid through the string operates the actuator. Pressure overbalance prevents movement of the piston (15). The radial port (28) is opened to drain fluid from the string until equilibrium is reached with the annular volume and the piston (15) can be moved.
    Type: Application
    Filed: May 23, 2020
    Publication date: July 14, 2022
    Inventors: David Stewart, James Linklater, George Telfer
  • Publication number: 20220174901
    Abstract: A method of altering or transferring the cytotype of a plant line. In particular, transferring the cytotype of a transformation-recalcitrant plant line, e.g., a transformation-recalcitrant maize line, from a transformation-recalcitrant cytotype to a transformable cytotype so that the line becomes transformable while preserving its nuclear genome. The newly-transformable line may be produced using methods including backcrossing and/or haploid induction.
    Type: Application
    Filed: March 24, 2020
    Publication date: June 9, 2022
    Applicant: Syngenta Crop Protection AG
    Inventors: David Stewart SKIBBE, Sivamani ELUMALAI
  • Publication number: 20220115166
    Abstract: A signal cable for an AC-coupled link, may include: a signal conductor; a dielectric surrounding the signal conductor; and a ground sheath having a conductive layer disposed at least partially around the conductor such that the dielectric is positioned between the ground sheath and the signal conductor, wherein the conductive layer comprises a first portion extending in a first direction along the cable and a second portion extending in a second direction, opposite the first direction, along the cable and further wherein the first and second portions of the conductive layer are separated from each other by a gap, the gap being dimensioned to provide a determined amount of capacitance in series in the ground sheath. The gap may form a complete separation between the first and second portions of the conductive layer.
    Type: Application
    Filed: October 12, 2020
    Publication date: April 14, 2022
    Inventors: KARL J. BOIS, JAMES DAVID STEWART, DAVID P. KOPP, ELENE CHOBANYAN
  • Patent number: 11300769
    Abstract: This disclosure is directed to system for transferring a substrate, such as a microscope slide, and holding the substrate within at least one device. The system includes a holder for holding the substrate and a gripper for transferring the substrate, such as between a cassette or stack and the holder. A method is also discussed herein.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: April 12, 2022
    Assignee: RareCyte, Inc.
    Inventors: Steve Quarre, Edward Shafer, David Stewart, Joel Smith
  • Patent number: 11237377
    Abstract: This disclosure is directed to an apparatus for securely holding a substrate, such as a microscope slide. A holder includes a frame including at least three walls, such as a base, a first arm, and a second arm. Each wall includes a platform or a portion of a platform to support the substrate. The first arm includes at least one securing block and a second arm opposite the first arm includes a secure bar with a securing block. The securing blocks include a ramp to guide the substrate off of the platforms and a stopper to set a maximum lift distance and to constrain the substrate.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: February 1, 2022
    Assignee: RareCyte, Inc.
    Inventors: Steve Quarre, David Stewart
  • Patent number: 11230899
    Abstract: A downhole casing cutting and removal assembly (10) and method of use thereof, the assembly comprising a work string (23) with a cutting mechanism (18) and plurality of resettable anchor mechanisms (20B-20D). The arrangement allows a test pull to be made following the cut by an anchor mechanism closer to the upper end of the cut casing section than an anchor mechanism (20B-20D) located close to the cutting mechanism. Time is thus saved by not having to raise and lower a single anchor mechanism (20B-20D) between the cutting position and the upper end of the cut casing section to undertake a test pull.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: January 25, 2022
    Assignee: ARDYNE HOLDINGS LIMITED
    Inventors: David Stewart, Lukas David, James Linklater
  • Publication number: 20220008862
    Abstract: To provide a new compound with pores finely tunable in size so as to take up a specific element and release the specific element taken up in the pores as necessary, a synthesis method of the new compound, and a separation and recovery agent. The new compound represented by the following molecular formula: (NH4)[Ln(C2O4)2(H2O)] wherein Ln represents a lanthanide selected from Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb, and Lu.
    Type: Application
    Filed: September 23, 2021
    Publication date: January 13, 2022
    Inventors: Takuya NANKAWA, Matthew ROSSEINSKY, David STEWART, Alexandros KATSOULIDIS
  • Patent number: 11194744
    Abstract: In-line memory module (IMM) computing nodes with an embedded processor(s) to support local processing of memory-based operations for lower latency and reduced power consumption, and related methods are disclosed. The IMM computing node that includes one or more memory chips mounted on a circuit board. The IMM computing node also includes one or more embedded processor(s) on the circuit board that are each interfaced to at least one memory chip among the one or more memory chips. The processor(s) can be configured to access its interfaced memory chip(s) through an internal memory bus on the circuit board to perform processing onboard the IMM computing node in an offload computing access mode. The embedded processors(s) can also be configured to forward memory access requests received from an external processor to the memory chip(s) for data storage and retrieval in a transparent access mode without further local processing of the memory access requests.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: December 7, 2021
    Assignee: Qualcomm Intelligent Solutions, Inc
    Inventors: David Stewart Dunning, Shekhar Yeshwant Borkar, Nitin Yeshwant Borkar, Matthew Scott Radecic
  • Publication number: 20210311302
    Abstract: This disclosure relates generally to optical trains for imaging systems. More particularly, this disclosure relates to imaging systems configured to limit optical aberrations. Furthermore, this disclosure relates to methods of limiting optical aberrations in imaging systems configured for imaging a sample, though more specifically, for detecting individual detection moieties within a plurality of detection moieties.
    Type: Application
    Filed: December 23, 2020
    Publication date: October 7, 2021
    Inventors: Jeremy Ryan COOPER, David STEWART
  • Publication number: 20210311754
    Abstract: Emulating scratchpad functionality using caches in processor-based devices is disclosed. In one aspect, each cache line within a cache of a processor-based device is associated with a corresponding scratchpad indicator indicating whether the corresponding cache line is exempt from the replacement policy used to select a cache line for eviction. Upon receiving data that corresponds to a memory access operation indicated as requiring scratchpad functionality, the cache controller stores the data in a cache line of the cache, and then sets the corresponding scratchpad indicator for the cache line. Subsequently, the cache controller emulates scratchpad functionality by allowing conventional memory read and write operations to be performed on the cache line, but does not apply its replacement policy to that cache line when selecting a cache line as a candidate for eviction. In this manner, the cache line may remain in the cache for use as scratchpad memory by software.
    Type: Application
    Filed: April 6, 2020
    Publication date: October 7, 2021
    Inventors: Shekhar Yeshwant Borkar, David Stewart Dunning, Nitin Yeshwant Borkar, Rishi Khan, Matthew Scott Radecic
  • Publication number: 20210286740
    Abstract: In-line memory module (IMM) computing nodes with an embedded processor(s) to support local processing of memory-based operations for lower latency and reduced power consumption, and related methods are disclosed. The IMM computing node that includes one or more memory chips mounted on a circuit board. The IMM computing node also includes one or more embedded processor(s) on the circuit board that are each interfaced to at least one memory chip among the one or more memory chips. The processor(s) can be configured to access its interfaced memory chip(s) through an internal memory bus on the circuit board to perform processing onboard the IMM computing node in an offload computing access mode. The embedded processors(s) can also be configured to forward memory access requests received from an external processor to the memory chip(s) for data storage and retrieval in a transparent access mode without further local processing of the memory access requests.
    Type: Application
    Filed: March 16, 2020
    Publication date: September 16, 2021
    Inventors: David Stewart Dunning, Shekhar Yeshwant Borkar, Nitin Yeshwant Borkar, Matthew Scott Radecic
  • Patent number: 11099091
    Abstract: A tire pressure monitoring system comprising a tire pressure monitoring device for mounting on an internal surface of a tire and including a pressure sensor for monitoring the fluid pressure in the tire. The system has an RFID tag located on the tire separately from the tire pressure monitoring device. In response to detecting a tire pressure event from monitoring the fluid pressure of said fluid, the tire pressure monitoring device causes the RFID to transmit data, which is received by the tire pressure monitoring device.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: August 24, 2021
    Assignee: Schrader Electronics Limited
    Inventors: William David Stewart, Christopher Arnold, Stephen Robb, Ian Elliott
  • Patent number: 11093416
    Abstract: A memory system supporting programmable selective access to subsets of parallel-arranged memory chips for efficient memory accesses is disclosed. A memory controller is programmable to selectively control a number of parallel-arranged memory chips in the memory system activated in a grouping for a memory access based on a memory access policy. The memory access policy is based on the number of memory chips to be activated to achieve the desired data line size for a given memory access. This programmability of the memory controller is made possible by separate dedicated chip select lines being coupled to each memory chip. Being able to only activate a subset of the memory chips for a memory access allows conservation of data bus bandwidth and power that would otherwise by consumed by asserting unused data on the data buses.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: August 17, 2021
    Assignee: Qualcomm Intelligent Solutions, Inc
    Inventors: David Stewart Dunning, Shekhar Yeshwant Borkar, Nitin Yeshwant Borkar, Matthew Scott Radecic
  • Patent number: 11084336
    Abstract: A method of determining an orientation of a tire mounted device with respect to a wheel rim using an acceleration sensor. With the wheel in a designated orientation and not rotating, a polarity of acceleration along a vertical axis is determined. Then it is determined which of a first absolute orientation or a second absolute orientation the tire mounted device is in depending on the determined polarity. The determined absolute orientation is correlated with the designated orientation to determine which of a first or second orientation with respect to the wheel rim the tire mounted device is in.
    Type: Grant
    Filed: January 1, 2019
    Date of Patent: August 10, 2021
    Assignee: SENSATA TECHNOLOGIES, INC.
    Inventors: William David Stewart, Stephen Robb
  • Patent number: 11034196
    Abstract: A method of locating a wheel-mounted electronic device, such as a tire pressure monitoring device. A wireless signal is transmitted from an interrogation device from each of a plurality of interrogation locations. The signals are received by the wheel-mounted device and received signal strength is measured for each interrogation location. The wheel-mounted device then transmits, in respect of each interrogation location, a wireless signal indicating the measured signal strength. These signals are received by the interrogation device which determines from them a location of the wheel-mounted device with respect to a wheel.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: June 15, 2021
    Assignee: SCHRADER ELECTRONICS LIMITED
    Inventors: William David Stewart, Alan Murphy, Stephen Robb
  • Publication number: 20210153501
    Abstract: The present disclosure includes compositions and methods for controlling a pest population, such as insects, arachnids, and other arthropods. The compositions herein may include mineral particles and at least one organic pesticide associated with the mineral particles, e.g., adsorbed and/or incorporated into portions of the mineral particles. For example, the composition may be applied to a substrate and/or an area having pests, such that the composition attaches to a pest proximate the substrate or in the area to deliver the organic pesticide(s) to the pest.
    Type: Application
    Filed: July 11, 2018
    Publication date: May 27, 2021
    Inventors: David GITTINS, David STEWART
  • Patent number: 11019158
    Abstract: A data distribution system in comprises software application nodes that utilize a publish-subscribe communication mechanism for distribution of data in real-time or near real-time within a personal area network (PAN), local area network (LAN), or wide-area network (WAN) configuration. The distributed system communication software application nodes reside in medical devices, such as monitoring devices and cardiac defibrillators, and associated patient information delivery systems and patient data management systems comprising medical software installed on servers and end-user computing devices, including mobile devices.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: May 25, 2021
    Assignee: Physio-Control, Inc.
    Inventors: Cheryl Protas, James Wootten, Seshadri Kumar Padmanabha, Ken Peterson, Randy Merry, David Stewart
  • Patent number: 11007571
    Abstract: A method of manufacturing an austenitic iron alloy comprising placing austenitic iron alloy powder in a can, evacuating air and other gases from the can, supplying nitrogen gas into the can, sealing the can and then hot isostatically pressing the austenitic iron alloy powder in the can to diffuse the nitrogen into the austenitic iron alloy powder and to produce a nitrogen enriched austenitic iron alloy bar and removing the can from the nitrogen enriched austenitic iron alloy bar.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: May 18, 2021
    Assignee: ROLLS-ROYCE PLC
    Inventor: David A. Stewart