Patents by Inventor David Stevenson

David Stevenson 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: 20240100734
    Abstract: An improved blending apparatus for manufactured wood products with a rotating blending drum or cylinder with a pattern of alternating flights of different configurations extending from the interior of the drum. The flights lift the strands as the drum rotates to different heights before the strands free-fall back to the bottom of the drum. One flight is shorter, and may be trapezoidal in cross-section. The second flight is taller, and may have a “bull-nose” configuration with substantially vertical sides. During operation, the design of the bull-nose flight tends to hold more strands and to carry them closer to the top of the drum before the strands drop and fall. In contrast, the shorter height and angled sides of the trapezoidal flight tends to hold fewer strands and to not carry them as high along the side before strands drop and fall.
    Type: Application
    Filed: December 5, 2023
    Publication date: March 28, 2024
    Inventors: DAVID EDWALL, SHANE CHUCKA, GRANT STEVENSON, MATHEW FISH, WAYNE TEMPLE
  • Publication number: 20240105441
    Abstract: Improved ultraviolet field-emission lamps can be safely deployed close to people because they eliminate the use of toxic materials, mitigate heating issues, and emit light in a wavelength range that is safe for human exposure.
    Type: Application
    Filed: September 29, 2023
    Publication date: March 28, 2024
    Inventors: Seth COE-SULLIVAN, Matthew STEVENSON, David Arto LALEYAN
  • Patent number: 11571013
    Abstract: Disclosed herein is one or more food compositions comprising at least one edible ingredient and a texturizing agent comprising an inhibited starch and a non-granular, enzymatically-debranched waxy potato starch. Also disclosed herein is a process for making said food compositions, the method comprising adding a texturizing agent comprising an inhibited starch and a non-granular, enzymatically-debranched waxy potato starch to the composition, wherein an effective amount of the texturizing agent is added to thicken the food composition. The texturizing agent can be used to replace protein and/or fat in said one or more food compositions.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: February 7, 2023
    Assignee: Corn Products Development, Inc.
    Inventors: Brandon Roa, Erhan Yildiz, David Stevenson, William Anthony
  • Publication number: 20220347135
    Abstract: Spontaneous preterm birth (sPTB) is premature delivery prior to 37 weeks of pregnancy and is a leading cause of infant mortality worldwide. sPTB is associated with a unique gene expression profile. Identified herein are numerous safe and proven therapeutic compositions used for unrelated indications that have the biological effect of reversing, in part, the gene expression profile of sPTB and which can be used in preventative or interventional treatments to prevent, delay, or ameliorate sPTB. The repurposed drugs include several Class A and Class B therapeutics that are regarded as safe or low risk in pregnant subjects.
    Type: Application
    Filed: March 20, 2020
    Publication date: November 3, 2022
    Applicants: The Regents of the University of California, The Leland Stanford Junior University
    Inventors: Marina Sirota, Brian Le, Ronald Wong, David Stevenson
  • Patent number: 11382334
    Abstract: Disclosed herein is at least one low protein yogurt composition comprising at least one dairy ingredient, dairy alternative ingredient, or mixture thereof, and a texturizing agent comprising an inhibited starch and a non-granular, enzymatically-debranched waxy starch selected from waxy maize, waxy tapioca, and combinations thereof, wherein said low protein yogurt comprises less than 2.9% dairy protein content, and at least one method for making these low protein yogurt compositions. Also disclosed herein is a texturizing agent comprising an inhibited starch and a non-granular, enzymatically-debranched waxy starch selected from waxy maize, waxy tapioca, and combinations thereof.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: July 12, 2022
    Assignee: Corn Products Development, Inc.
    Inventors: Brandon Roa, Erhan Yildiz, David Stevenson, William Anthony
  • Patent number: 11350643
    Abstract: Disclosed herein is at least one low protein yogurt composition comprising at least one dairy ingredient, dairy alternative ingredient, or mixture thereof, and a texturizing agent comprising an inhibited starch and a non-granular, enzymatically-debranched waxy potato starch, wherein said low protein yogurt comprises less than 2.9% dairy protein content, and at least one method for making these low protein yogurt compositions. Also disclosed herein is a texturizing agent comprising an inhibited starch and a non-granular, enzymatically-debranched waxy potato starch.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: June 7, 2022
    Assignee: Corn Products Development, Inc.
    Inventors: Brandon Roa, Erhan Yildiz, David Stevenson, William Anthony, Jelle Brinksma
  • Publication number: 20200383346
    Abstract: Disclosed herein is at least one low protein yogurt composition comprising at least one dairy ingredient, dairy alternative ingredient, or mixture thereof, and a texturizing agent comprising an inhibited starch and a non-granular, enzymatically-debranched waxy starch selected from waxy maize, waxy tapioca, and combinations thereof, wherein said low protein yogurt comprises less than 2.9% dairy protein content, and at least one method for making these low protein yogurt compositions. Also disclosed herein is a texturizing agent comprising an inhibited starch and a non-granular, enzymatically-debranched waxy starch selected from waxy maize, waxy tapioca, and combinations thereof.
    Type: Application
    Filed: November 21, 2017
    Publication date: December 10, 2020
    Inventors: Brandon Roa, Erhan Yildiz, David Stevenson, William Anthony
  • Publication number: 20200288760
    Abstract: Disclosed herein is one or more food compositions comprising at least one edible ingredient and a texturizing agent comprising an inhibited starch and a non-granular, enzymatically-debranched waxy potato starch. Also disclosed herein is a process for making said food compositions, the method comprising adding a texturizing agent comprising an inhibited starch and a non-granular, enzymatically-debranched waxy potato starch to the composition, wherein an effective amount of the texturizing agent is added to thicken the food composition. The texturizing agent can be used to replace protein and/or fat in said one or more food compositions.
    Type: Application
    Filed: November 21, 2017
    Publication date: September 17, 2020
    Inventors: Brandon Roa, Erhan Yildiz, David Stevenson, William Anthony
  • Publication number: 20200025955
    Abstract: The present specification discloses methods for inspecting an object. The method includes scanning an object in a two-step process. In the primary scan, a truck or cargo container (container) is completely scanned with a fan beam radiation, the transmitted radiation is measured with an array of detectors, and the transmission information and optionally the fission signatures are analyzed to determine the presence of high-density, high-Z and fissionable materials. If the container alarms in one or more areas, the areas are subjected to a secondary scan. This is done by precisely repositioning the container to the location of the suspect areas, adjusting the scanning system to focus on the suspect areas, performing a stationary irradiation of the areas, and analyzing the measured feature signatures to clear or confirm the presence of SNM.
    Type: Application
    Filed: December 14, 2018
    Publication date: January 23, 2020
    Inventors: Tsahi Gozani, Joseph Bendahan, Michael Joseph King, Timothy John Shaw, John David Stevenson
  • Publication number: 20190281850
    Abstract: Disclosed herein is one or more food compositions comprising at least one edible ingredient and a texturizing agent comprising an inhibited starch and a non-granular, enzymatically-debranched waxy starch selected from waxy maize, waxy tapioca and combinations thereof. Also disclosed herein is a process for making said food compositions, the method comprising adding a texturizing agent comprising an inhibited starch and a non-granular, enzymatically-debranched waxy starch selected from waxy maize, waxy tapioca and combinations thereof to the composition, wherein an effective amount of the texturizing agent is added to thicken the food composition. The texturizing agent can be used to replace protein and/or fat in said one or more food composition.
    Type: Application
    Filed: November 21, 2017
    Publication date: September 19, 2019
    Inventors: Brandon Roa, Erhan Yildiz, David Stevenson, William Anthony
  • Publication number: 20190281849
    Abstract: Disclosed herein is at least one low protein yogurt composition comprising at least one dairy ingredient, dairy alternative ingredient, or mixture thereof, and a texturizing agent comprising an inhibited starch and a non-granular, enzymatically-debranched waxy potato starch, wherein said low protein yogurt comprises less than 2.9% dairy protein content, and at least one method for making these low protein yogurt compositions. Also disclosed herein is a texturizing agent comprising an inhibited starch and a non-granular, enzymatically-debranched waxy potato starch.
    Type: Application
    Filed: November 21, 2017
    Publication date: September 19, 2019
    Inventors: Brandon Roa, Erhan Yildiz, David Stevenson, William Anthony, Jelle Brinksma
  • Patent number: 10393915
    Abstract: The present specification discloses methods for inspecting an object. The method includes scanning an object in a two-step process. In the primary scan, a truck or cargo container (container) is completely scanned with a fan beam radiation, the transmitted radiation is measured with an array of detectors, and the transmission information and optionally the fission signatures are analyzed to determine the presence of high-density, high-Z and fissionable materials. If the container alarms in one or more areas, the areas are subjected to a secondary scan. This is done by precisely repositioning the container to the location of the suspect areas, adjusting the scanning system to focus on the suspect areas, performing a stationary irradiation of the areas, and analyzing the measured feature signatures to clear or confirm the presence of SNM.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: August 27, 2019
    Assignee: Rapiscan Systems, Inc.
    Inventors: Tsahi Gozani, Joseph Bendahan, Michael Joseph King, Timothy John Shaw, John David Stevenson
  • Patent number: 9844019
    Abstract: A technique for estimating the location of a wireless terminal at an unknown location in a geographic region is disclosed. The technique is based on the recognition that there are location-dependent traits of electromagnetic signals. In environments where multiple antennas are radiating the same signal, as in the case of distributed antennas or host-repeater configurations, one or more possible locations of the wireless terminal can be designated as improbable based on i) a measure of the propagation delay of a signal traveling between a) a base station and b) the wireless terminal or an infrastructure antenna, or ii) the maximum distance at which a signal is detectable by the wireless terminal. Additionally, the applicable set of values for the location-dependent traits is selected based on similar criteria.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: December 12, 2017
    Assignee: Polaris Wireless, Inc.
    Inventors: Tarun Kumar Bhattacharya, David Stevenson Spain, Jr., Hassan Mohamed El-Sallabi, Robert Lewis Martin
  • Patent number: 9745735
    Abstract: An intake nozzle fits onto the suction hose of a vacuum pumper truck. The nozzle comprises a tubular housing and the rotor within the housing near the intake end. The rotor includes a hollow cylindrical canister and spiral vanes on its exterior. Ambient air enters an air tube, penetrates the side of the housing and supplies ambient air to the interior of the canister. The air exits through outlet ports into the liquid waste as it moves past under vacuum. The injected air reduces the density of the liquid waste, speeding up the pumping process and reducing the incidence of blockages.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: August 29, 2017
    Inventors: David Stevenson, Christopher Stevenson
  • Patent number: 9479902
    Abstract: A method and system that account for one or more propagation-time components in a transmission path between a base station and a wireless terminal in a coverage area being served by the system. One such component is in the base station equipment between the radio that serves a wireless terminal and the antenna element that radiates and/or receives electromagnetic signals that involve the terminal. Another component of the transmission path is the one or more paths over which a radiated signal travels between the base station antenna element and the wireless terminal. By accounting for these propagation components through the use of measurement data provided by possibly a large number of wireless terminals, a disclosed location engine is able to derive adjusted measurements that are more representative of the propagation-time characteristic being measured by the individual terminals. These adjusted measurements can then be used to estimate the location of a wireless terminal more accurately.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: October 25, 2016
    Assignee: Polaris Wireless, Inc.
    Inventors: Robert Lewis Martin, David Stevenson Spain, Jr.
  • Patent number: 9473896
    Abstract: A technique for providing a location estimate of a mobile station, with increased accuracy. An unenhanced estimate of the location of a target mobile station is first obtained. A portable transmitter is then situated in an initial geographic area of interest defined by the unenhanced estimate. The portable transmitter is then tuned to transmit on a particular neighbor base station frequency being reported by the mobile station. When the portable transmitter is moved close enough to the target mobile station, the mobile station stops reporting the neighbor to the mobile's wireless telecommunications network, on account of the interference introduced by the portable transmitter being on that frequency. The estimated distance from the portable transmitter to the target mobile station depends on the transmit signal strength used by the portable transmitter. By considering these details, an enhanced estimate of the location of the mobile station can then be deduced.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: October 18, 2016
    Assignee: Polaris Wireless, Inc.
    Inventor: David Stevenson Spain, Jr.
  • Patent number: 9414350
    Abstract: A method and system that account for one or more propagation-time components in a transmission path between a base station and a wireless terminal in a coverage area being served by the system. One such component is in the base station equipment between the radio that serves a wireless terminal and the antenna element that radiates and/or receives electromagnetic signals that involve the terminal. Another component of the transmission path is the one or more paths over which a radiated signal travels between the base station antenna element and the wireless terminal. By accounting for these propagation components through the use of measurement data provided by possibly a large number of wireless terminals, a disclosed location engine is able to derive adjusted measurements that are more representative of the propagation-time characteristic being measured by the individual terminals. These adjusted measurements can then be used to estimate the location of a wireless terminal more accurately.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: August 9, 2016
    Assignee: Polaris Wireless, Inc.
    Inventors: Robert Lewis Martin, David Stevenson Spain, Jr.
  • Patent number: 9408030
    Abstract: A technique for providing a location estimate of a mobile station, with increased accuracy. An unenhanced estimate of the location of a target mobile station is first obtained. A portable transmitter is then situated in an initial geographic area of interest defined by the unenhanced estimate. The portable transmitter is then tuned to transmit on a particular neighbor base station frequency being reported by the mobile station. When the portable transmitter is moved close enough to the target mobile station, the mobile station stops reporting the neighbor to the mobile's wireless telecommunications network, on account of the interference introduced by the portable transmitter being on that frequency. The estimated distance from the portable transmitter to the target mobile station depends on the transmit signal strength used by the portable transmitter. By considering these details, an enhanced estimate of the location of the mobile station can then be deduced.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: August 2, 2016
    Assignee: Polaris Wireless, Inc.
    Inventor: David Stevenson Spain, Jr.
  • Patent number: 9408173
    Abstract: A technique for deriving timing information across wireless base stations is disclosed. After initializing values for base station time-offset parameters, a server acquires reference coordinates of a wireless terminal, which are provided from an independent source, and also acquires values for one or more time-of-occurrences of events associated with signals that travel between the wireless terminal and the base stations. The server generates predicted coordinates of the wireless terminal, based in part on the current time-offset values, by using trilateration. The server then generates updated time-offset values, based on a method of least squares, in which each residual is a difference between the reference and predicted coordinates of each wireless terminal location, for one or more wireless terminals. The server modifies the time-offset values so as to minimize the least-squares function.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: August 2, 2016
    Assignee: Polaris Wireless, Inc.
    Inventors: David Stevenson Spain, Jr., Scot Douglas Gordon
  • Patent number: 9402157
    Abstract: A technique for providing a location estimate of a mobile station, with increased accuracy. An unenhanced estimate of the location of a target mobile station is first obtained. A portable transmitter is then situated in an initial geographic area defined by the unenhanced estimate. The transmitter is then tuned to transmit a particular identifier on a particular frequency. When the transmitter is moved close enough to the mobile, the mobile starts reporting the identifier to the mobile's wireless network. Because the identifier and frequency are carefully selected so as not into interfere with ongoing operations of the wireless network, the wireless network itself merely regards the reported data to be invalid for handoff purposes. The estimated distance from the transmitter to the mobile depends on the transmit signal strength used by the transmitter. By considering these details, an enhanced estimate of the location of the mobile can then be deduced.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: July 26, 2016
    Assignee: Polaris Wireless, Inc.
    Inventors: Jerome Arthur Blaha, Jr., Robert Lewis Martin, David Stevenson Spain, Jr.