Patents by Inventor Stephen Walker

Stephen 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: 20250101517
    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 ilcocolitis.
    Type: Application
    Filed: May 3, 2024
    Publication date: March 27, 2025
    Inventors: Arthur KRIGSMAN, Stephen WALKER
  • Patent number: 12251663
    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: September 29, 2023
    Date of Patent: March 18, 2025
    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
  • 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
  • Patent number: 11199161
    Abstract: In accordance with the present invention, there are provided simplified systems and methods for catalytically deactivating, removing, or reducing the levels of reactive component(s) from the vapor phase of fuel storage tanks. The simple apparatus described herein can be utilized to replace complex OBIGGS systems on the market. Simply stated, in one embodiment of the invention, the vapor phase from the fuel tank is passed over a catalytic bed operated at appropriate temperatures to allow the reaction between free oxygen and the fuel vapor by oxidation of the fuel vapor, thus deactivating reactive component(s) in the gas phase.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: December 14, 2021
    Assignee: Phyre Technologies, Inc.
    Inventors: Stephen Walker, Santosh Limaye, Wesley Jung, Stuart Robertson
  • Patent number: 11111647
    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 4, 2019
    Date of Patent: September 7, 2021
    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