Patents by Inventor Stephen A Walker

Stephen A Walker 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: 20240133276
    Abstract: A side pocket mandrel for use in a gas lift system is configured to improve the recovery of petroleum fluids from a well. The side pocket mandrel includes an upper assembly joint, a lower assembly joint, and a central portion that has a total length (LT). The side pocket mandrel further comprises a central bore extending through the side pocket mandrel along a central longitudinal axis that extends through the upper and lower assembly joints. The side pocket mandrel further includes a tool channel offset from the central bore and a side pocket tube linearly aligned with the tool channel and configured to receive a gas lift valve. The side pocket mandrel further includes a pair of primary flow blocks that each have a length (LFa) that is at least 35% of the total length (LT) of the central portion of the side pocket mandrel.
    Type: Application
    Filed: October 20, 2022
    Publication date: April 25, 2024
    Applicant: Baker Hughes Oilfield Operations LLC
    Inventors: Donavan Brown, Ronnie Russell, Griffin Koehler, Laura Walker, Stephen Satterlee
  • Publication number: 20240132467
    Abstract: Compounds of general formula (I): (I) wherein R1, R2, R3, R4, R5, Y and Z are as defined herein are useful for treating respiratory disease and other diseases and conditions modulated by TMEM16A.
    Type: Application
    Filed: June 9, 2023
    Publication date: April 25, 2024
    Applicant: TMEM16A Limited
    Inventors: Stephen COLLINGWOOD, Jonathan David Hargrave, Duncan Alexander Hay, Clive McCarthy, Thomas Beauregard Schofield, Edward Walker, Naomi Went
  • Patent number: 11958237
    Abstract: A three-dimensional (3D) printing system for preparing an object made at least partially of an expanded polymer including: a printing device for transporting and depositing a strand of expanded polymer including a blowing agent onto a surface and a 3D movement device for adjusting the position of the printing device in a predefined matrix allowing deposit of the strand of expanded polymer at a predetermined time and precise position within the matrix, the printing device includes: a feed section, a transporting section, a surface melting section, and a terminal printing head section for depositing the expanded polymer strand onto the surface, and all of sections have the same inner diameter, and the surface melting section including a solid-state welding element, a laser beam, a generator of hot gas or liquid and/or a generator of heat.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: April 16, 2024
    Assignee: SULZER MANAGEMENT AG
    Inventors: Stephen Shields, Daniele Tammaro, Ulla Trommsdorff, Claudio Walker
  • Publication number: 20240065318
    Abstract: The present disclosure relates to aerosol delivery devices and related methods of delivering aerosol to a user. The aerosol delivery devices may include a housing providing multiple aerosol pathways having a mouth-end opening through which aerosol can be inhaled by a user, the housing defining a first aerosol delivery pathway in fluid communication with the mouth-end opening and a second aerosol delivery pathway separate from the first aerosol delivery pathway and in fluid communication with the mouth-end opening. An atomizer including a heating element or piezoelectric element and a liquid transport element in fluid communication with an aerosol precursor composition is provided in fluid communication with the first aerosol delivery pathway. A flavorant-infused material is positioned within the second aerosol delivery pathway and adapted to produce a second aerosol upon contact between the flavorant-infused material and flowing air.
    Type: Application
    Filed: October 18, 2023
    Publication date: February 29, 2024
    Inventors: Sawyer Hubbard, Eric Taylor Hunt, Karen V. Taluskie, Stephen Benson Sears, Donna Walker Duggins, Michael F. Davis
  • Publication number: 20240017214
    Abstract: A portable filtration system is described. The system may comprise: a mixing portion, comprising: a pump adaptor and a contaminant regulator. The pump adaptor may comprise: an upper plate, a lower plate, and a screen. The screen may axially extend between the upper and lower plates, wherein the upper plate, the lower plate, and the screen define a channel of a mixing chamber. The contaminant regulator may comprise a through-passage coupled to the upper plate, wherein the through-passage is in fluid communication with the mixing chamber.
    Type: Application
    Filed: September 29, 2023
    Publication date: January 18, 2024
    Applicant: Government of the United States, as represented by the Secretary of the Army
    Inventors: Michael Jeffrey Anderson, Jeremy Stephen Walker, James Saye Dusenbury, IV
  • Patent number: 11861481
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for searching an autonomous vehicle sensor data repository. One of the methods includes maintaining a collection of sensor samples and, for each sensor sample, an embedding of the sensor sample; receiving a request specifying a query sensor sample, wherein the query sensor sample characterizes a query environment region; and identifying, from the collection of sensor samples, a plurality of relevant sensor samples that characterize similar environment regions to the query environment region, comprising: processing the query sensor sample through the embedding neural network to generate a query embedding; and identifying, from sensor samples in a subset of the sensor samples in the collection, a plurality of sensor samples that have embeddings that are closest to the query embedding.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: January 2, 2024
    Assignee: Waymo LLC
    Inventors: Zijian Guo, Nichola Abdo, Junhua Mao, Congcong Li, Edward Stephen Walker, Jr.
  • Patent number: 11806667
    Abstract: A portable filtration system is described. The system may comprise: a mixing portion, comprising: a pump adaptor and a contaminant regulator. The pump adaptor may comprise: an upper plate, a lower plate, and a screen. The screen may axially extend between the upper and lower plates, wherein the upper plate, the lower plate, and the screen define a channel of a mixing chamber. The contaminant regulator may comprise a through-passage coupled to the upper plate, wherein the through-passage is in fluid communication with the mixing chamber.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: November 7, 2023
    Assignee: GOVERNMENT OF THE UNITED STATES, AS REPRESENTED BY THE SECRETARY OF THE ARMY
    Inventors: Michael Jeffrey Anderson, Jeremy Stephen Walker, James Saye Dusenbury, IV
  • Patent number: 11732437
    Abstract: This description provides an autonomous or semi-autonomous excavation vehicle that is capable of navigating through a dig site and carrying out an excavation routine using a system of sensors physically mounted to the excavation vehicle. The sensors collects any one or more of spatial, imaging, measurement, and location data representing the status of the excavation vehicle and its surrounding environment. Based on the collected data, the excavation vehicle executes instructions to carry out an excavation routine. The excavation vehicle is also able to carry out numerous other tasks, such as checking the volume of excavated earth in an excavation tool, and helping prepare a digital terrain model of the site as part of a process for creating the excavation routine.
    Type: Grant
    Filed: July 27, 2022
    Date of Patent: August 22, 2023
    Assignee: BUILT ROBOTICS INC.
    Inventors: Noah Austen Ready-Campbell, Andrew Xiao Liang, Linus Page Chou, Edward Stephen Walker, Christian John Wawrzonek, Cyrus McMann Ready-Campbell
  • Patent number: 11668070
    Abstract: This description provides an autonomous or semi-autonomous excavation vehicle that is capable of navigating through a dig site and carrying out an excavation routine using a system of sensors physically mounted to the excavation vehicle. The sensors collect any one or more of spatial, imaging, measurement, and location data representing the status of the excavation vehicle and its surrounding environment. Based on the collected data, the excavation vehicle executes instructions to carry out an excavation routine. The excavation vehicle is also able to carry out numerous other tasks, such as checking the volume of excavated earth in an excavation tool and helping prepare a digital terrain model of the site as part of a process for creating the excavation routine.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: June 6, 2023
    Assignee: BUILT ROBOTICS INC.
    Inventors: Noah Austen Ready-Campbell, Andrew Xiao Liang, Linus Page Chou, Edward Stephen Walker, Jr., Christian John Wawrzonek, Cyrus McMann Ready-Campbell
  • Patent number: 11634883
    Abstract: This description provides an autonomous or semi-autonomous excavation vehicle that is capable of navigating through a dig site and carrying out an excavation routine using a system of sensors physically mounted to the excavation vehicle. The sensors collects any one or more of spatial, imaging, measurement, and location data representing the status of the excavation vehicle and its surrounding environment. Based on the collected data, the excavation vehicle executes instructions to carry out an excavation routine. The excavation vehicle is also able to carry out numerous other tasks, such as checking the volume of excavated earth in an excavation tool, and helping prepare a digital terrain model of the site as part of a process for creating the excavation routine.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: April 25, 2023
    Assignee: BUILT ROBOTICS INC.
    Inventors: Noah Austen Ready-Campbell, Andrew Xiao Liang, Linus Page Chou, Edward Stephen Walker, Christian John Wawrzonek, Cyrus McMann Ready-Campbell
  • Publication number: 20230099920
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for training a classifier to detect open vehicle doors. One of the methods includes obtaining a plurality of initial training examples, each initial training example comprising (i) a sensor sample from a collection of sensor samples and (ii) data classifying the sensor sample as characterizing a vehicle that has an open door; generating a plurality of additional training examples, comprising, for each initial training example: identifying, from the collection of sensor samples, one or more additional sensor samples that were captured less than a threshold amount of time before the sensor sample in the initial training example was captured; and training the machine learning classifier on first training data that includes the initial training examples and the additional training examples to generate updated weights for the machine learning classifier.
    Type: Application
    Filed: November 28, 2022
    Publication date: March 30, 2023
    Inventors: Junhua Mao, Lo Po Tsui, Congcong Li, Edward Stephen Walker, JR.
  • Publication number: 20230072020
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for open vehicle doors prediction using a neural network model. One of the methods includes: obtaining sensor data (i) that includes a portion of a point cloud generated by a laser sensor of an autonomous vehicle and (ii) that characterizes a vehicle that is in a vicinity of the autonomous vehicle in an environment; and processing the sensor data using an open door prediction neural network to generate an open door prediction that predicts a likelihood score that the vehicle has an open door.
    Type: Application
    Filed: September 8, 2022
    Publication date: March 9, 2023
    Inventors: Andre Liang Cornman, David Lee, Yang Song, Zijian Guo, Edward Stephen Walker, Jr., Yuanfang Wang, Zhengli Zhao, Hsu-kuang Chiu
  • Publication number: 20230058214
    Abstract: The invention provides compositions and methods for identifying autism and autism spectrum disorders in humans. The invention also includes compositions and methods for identifying unique blood-based gene expression profiles in children with regressive autism spectrum disorder (ASD) and ileocolitis.
    Type: Application
    Filed: December 22, 2021
    Publication date: February 23, 2023
    Inventors: Arthur Krigsman, Stephen WALKER
  • Patent number: 11514310
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for training a classifier to detect open vehicle doors. One of the methods includes obtaining a plurality of initial training examples, each initial training example comprising (i) a sensor sample from a collection of sensor samples and (ii) data classifying the sensor sample as characterizing a vehicle that has an open door; generating a plurality of additional training examples, comprising, for each initial training example: identifying, from the collection of sensor samples, one or more additional sensor samples that were captured less than a threshold amount of time before the sensor sample in the initial training example was captured; and training the machine learning classifier on first training data that includes the initial training examples and the additional training examples to generate updated weights for the machine learning classifier.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: November 29, 2022
    Assignee: Waymo LLC
    Inventors: Junhua Mao, Lo Po Tsui, Congcong Li, Edward Stephen Walker, Jr.
  • Publication number: 20220366263
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for training a student machine learning model using a teacher machine learning model that has a pre-trained feature extractor.
    Type: Application
    Filed: May 6, 2021
    Publication date: November 17, 2022
    Inventors: Ming Ji, Edward Stephen Walker, JR., Yang Song, Zijian Guo, Congcong Li
  • Publication number: 20220364321
    Abstract: This description provides an autonomous or semi-autonomous excavation vehicle that is capable of navigating through a dig site and carrying out an excavation routine using a system of sensors physically mounted to the excavation vehicle. The sensors collects any one or more of spatial, imaging, measurement, and location data representing the status of the excavation vehicle and its surrounding environment. Based on the collected data, the excavation vehicle executes instructions to carry out an excavation routine. The excavation vehicle is also able to carry out numerous other tasks, such as checking the volume of excavated earth in an excavation tool, and helping prepare a digital terrain model of the site as part of a process for creating the excavation routine.
    Type: Application
    Filed: July 27, 2022
    Publication date: November 17, 2022
    Inventors: Noah Austen Ready-Campbell, Andrew Xiao Liang, Linus Page Chou, Edward Stephen Walker, Christian John Wawrzonek, Cyrus McMann Ready-Campbell
  • Publication number: 20220314168
    Abstract: A portable filtration system is described. The system may comprise: a mixing portion, comprising: a pump adaptor and a contaminant regulator. The pump adaptor may comprise: an upper plate, a lower plate, and a screen. The screen may axially extend between the upper and lower plates, wherein the upper plate, the lower plate, and the screen define a channel of a mixing chamber. The contaminant regulator may comprise a through-passage coupled to the upper plate, wherein the through-passage is in fluid communication with the mixing chamber.
    Type: Application
    Filed: April 5, 2021
    Publication date: October 6, 2022
    Applicant: Government of the United States, as represented by the Secretary of the Army
    Inventors: James Saye Dusenbury, Jeremy Stephen Walker, Michael Jeffrey Anderson
  • Patent number: 11441186
    Abstract: The invention provides compositions and methods for identifying autism and autism spectrum disorders in humans. The invention also includes compositions and methods for identifying unique gene expression profiles in children with regressive autism spectrum disorder (ASD) and ileocolitis.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: September 13, 2022
    Assignee: Wake Forest University Health Sciences
    Inventors: Stephen Walker, Arthur Krigsman
  • Patent number: 11441291
    Abstract: This description provides an autonomous or semi-autonomous excavation vehicle that is capable of navigating through a dig site and carrying out an excavation routine using a system of sensors physically mounted to the excavation vehicle. The sensors collects any one or more of spatial, imaging, measurement, and location data representing the status of the excavation vehicle and its surrounding environment. Based on the collected data, the excavation vehicle executes instructions to carry out an excavation routine. The excavation vehicle is also able to carry out numerous other tasks, such as checking the volume of excavated earth in an excavation tool, and helping prepare a digital terrain model of the site as part of a process for creating the excavation routine.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: September 13, 2022
    Assignee: BUILT ROBOTICS INC.
    Inventors: Noah Austen Ready-Campbell, Andrew Xiao Liang, Linus Page Chou, Edward Stephen Walker, Jr., Christian John Wawrzonek, Cyrus McMann Ready-Campbell
  • Patent number: 11248268
    Abstract: The invention provides compositions and methods for identifying autism and autism spectrum disorders in humans. The invention also includes compositions and methods for identifying unique blood-based gene expression profiles in children with regressive autism spectrum disorder (ASD) and ileocolitis.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: February 15, 2022
    Assignees: Wake Forest University Health Sciences
    Inventors: Arthur Krigsman, Stephen Walker