Patents by Inventor Donald A. Walker

Donald 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: 20240078251
    Abstract: The systems and methods described here can reduce the storage space required (memory and/or disk) to store certain types of data, provide efficient (fast) creation, modification and retrieval of such data, and support such data within the framework of a multi-version database. In some embodiments, the systems and methods can store each field of a set of records as a vector of values, e.g., a data vector. A set of records can be represented using a vector id vector, or “vid” vector, wherein each element of the vid vector contains a reference to the memory location of a data vector. A header table can store associations between labels and “vid” vectors that pertain to those labels. Identical data vectors can be re-used between different record sets or vid vectors needing that vector, thus saving space.
    Type: Application
    Filed: November 13, 2023
    Publication date: March 7, 2024
    Inventors: Robert N. WALKER, James R. CROZMAN, Jansen Donald KRAY, Mosa To Fung YEUNG, James Gordon DAGG
  • Publication number: 20210090446
    Abstract: A method in a trail aircraft for monitoring the separation distance between the trail aircraft and a lead aircraft during a flight deck interval management paired approach (FIM-PA) procedure is provided. The method includes: receiving an assigned spacing goal (ASG); receiving traffic information regarding the lead aircraft that indicates the position, heading and ground velocity of the lead aircraft; retrieving a predetermined tolerance limit and traffic information regarding the trail aircraft that indicates the position, heading and ground velocity of the trail aircraft; setting a range limit that is at least as great as the absolute limit indicated by the ASG plus the tolerance limit; monitoring the range and ground speed differential between the lead aircraft and the trail aircraft; and generating a caution alert indicator when a monitored condition detected from monitoring the range and ground speed differential indicates a potential problem.
    Type: Application
    Filed: September 23, 2019
    Publication date: March 25, 2021
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Abdur Rab, Donald Walker, Anupam Mazumdar, Prashanth Thirumalaivenjamur, Arivazhagan V
  • Patent number: 10508797
    Abstract: A luminaire has a light emitting portion extending between first second end caps to define a length between the first end cap and the second end cap. The first end cap comprises a receptacle and the second end cap comprises a post both of which extend in an insertion direction. The receptacles are configured to closely receive the posts and the insertion direction is disposed transversely to the length. A method of assembling a luminaire assembly includes positioning a first end cap of a first luminaire over a second end cap of a second luminaire; moving the first end cap relative to the second end cap in the insertion direction; and inserting the post into the receptacle. An electrical connector on the first end cap may connect with a mating electrical connector on the second end cap to complete an electrical connection between the first luminaire and the second luminaire.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: December 17, 2019
    Assignee: IDEAL Industries Lighting LLC
    Inventors: Donald Walker, Qingcong Hu, Boris Karpichev, Andrew Bendtsen, Kurt Wilcox
  • Patent number: 10421716
    Abstract: The invention relates to a novel process for preparing ?-carboxamide pyrrolidine derivatives, in particular (2S, 5R)-5-(4-((2-fluorobenzyl)oxy)phenyl)pyrrolidine-2-carboxamide, and to novel intermediates for use in said process along with processes for preparing said intermediates.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: September 24, 2019
    Assignee: Convergence Pharmaceuticals Limited
    Inventors: David MacPherson, David Witty, Gerard Giblin, Michael Williams, Donald Walker, William Kiesman, Tamera Mack
  • Patent number: 10264657
    Abstract: A lighting fixture includes an LED light source that outputs light for general illumination in response to a drive signal, and a driver module configured to provide the drive signal in response to an intelligent lighting module (ILM) instruction. An ILM that is separate from the driver module is provided and has a first plurality of sensors, a first communication interface, a second communication interface, and first control circuitry. The control circuitry of the ILM is configured to communicate with at least one remote entity via the first communication interface as well as generate the ILM instruction for the driver module based on sensor data gathered from the first plurality of sensors, remote entities, or a combination thereof. The ILM instruction is provided to the driver module via the second communication interface and used by the driver module to control the drive signal for the LED array.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: April 16, 2019
    Assignee: Cree, Inc.
    Inventors: Kory Liszt, Donald Walker
  • Patent number: 10247372
    Abstract: A light fixture includes a LED assembly and a housing. A lens assembly comprises a lens and a first end cap and a second end cap. The end caps are releasably connected to the housing such that the lens and the end caps are releasably mounted to the housing as a unit. The end caps may be releasably mounted to the housing by a deformable, resilient first engagement member that releasably engages a second engagement when the lens assembly is moved relative to the housing in a first direction. A force is created between the first engagement member and the second engagement member sufficient to hold the lens assembly in the housing and low enough that the lens assembly is removable from the housing by pulling the lens assembly in a second direction opposite to the first direction.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: April 2, 2019
    Assignee: Cree, Inc.
    Inventors: Kurt Wilcox, Donald Walker, Curt Progl, Randall Levy Bernard
  • Publication number: 20180355028
    Abstract: The application identifies novel fragments of alpha-synuclein in patients with Lewy Body Disease (LBD) and transgenic animal models thereof. These diseases are characterized by aggregations of alpha-synuclein. The fragments have a truncated C-terminus relative to full-length alpha-synuclein. Some fragments are characterized by a molecular weight of about 12 kDa as determined by SDS gel electrophoresis in tricine buffer and a truncation of at least ten contiguous amino acids from the C-terminus of natural alpha-synuclein. The site of cleavage preferably occurs after residue 117 and before residue 126 of natural alpha-synuclein. The identification of these novel fragments of alpha-synuclein has a number of application in for example, drug discovery, diagnostics, therapeutics, and transgenic animals.
    Type: Application
    Filed: May 16, 2018
    Publication date: December 13, 2018
    Inventors: Tamie J. Chilcote, Jason Goldstein, John P. Anderson, Donald Walker
  • Publication number: 20180359838
    Abstract: A lighting fixture includes an LED light source that outputs light for general illumination in response to a drive signal, and a driver module configured to provide the drive signal in response to an intelligent lighting module (ILM) instruction. An ILM that is separate from the driver module is provided and has a first plurality of sensors, a first communication interface, a second communication interface, and first control circuitry. The control circuitry of the ILM is configured to communicate with at least one remote entity via the first communication interface as well as generate the ILM instruction for the driver module based on sensor data gathered from the first plurality of sensors, remote entities, or a combination thereof. The ILM instruction is provided to the driver module via the second communication interface and used by the driver module to control the drive signal for the LED array.
    Type: Application
    Filed: December 21, 2017
    Publication date: December 13, 2018
    Inventors: Kory Liszt, Donald Walker
  • Patent number: 10094971
    Abstract: In one aspect, optic assemblies and waveguide fixtures comprising the same are described herein. In an exemplary embodiment, an optic assembly includes an optic housing, an optical insert positioned in the optic housing, and a waveguide optic positioned in the optical insert. The waveguide optic includes a light extraction face and at least two sets of light extraction elements provided on the light extraction face. The at least two sets of light extraction elements are disposed on opposing sides of an axis of symmetry for extracting a symmetric lighting distribution.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: October 9, 2018
    Assignee: Cree, Inc.
    Inventors: Jin Hong Lim, Kurt Wilcox, Boris Karpichev, Donald Walker
  • Publication number: 20180224075
    Abstract: A light fixture includes a LED assembly and a housing. A lens assembly comprises a lens and a first end cap and a second end cap. The end caps are releasably connected to the housing such that the lens and the end caps are releasably mounted to the housing as a unit. The end caps may be releasably mounted to the housing by a deformable, resilient first engagement member that releasably engages a second engagement when the lens assembly is moved relative to the housing in a first direction. A force is created between the first engagement member and the second engagement member sufficient to hold the lens assembly in the housing and low enough that the lens assembly is removable from the housing by pulling the lens assembly in a second direction opposite to the first direction.
    Type: Application
    Filed: February 6, 2017
    Publication date: August 9, 2018
    Inventors: Kurt Wilcox, Donald Walker, Curt Progl, Randall Levy Bernard
  • Publication number: 20180172246
    Abstract: A luminaire has a light emitting portion extending between first second end caps to define a length between the first end cap and the second end cap. The first end cap comprises a receptacle and the second end cap comprises a post both of which extend in an insertion direction. The receptacles are configured to closely receive the posts and the insertion direction is disposed transversely to the length. A method of assembling a luminaire assembly includes positioning a first end cap of a first luminaire over a second end cap of a second luminaire; moving the first end cap relative to the second end cap in the insertion direction; and inserting the post into the receptacle. An electrical connector on the first end cap may connect with a mating electrical connector on the second end cap to complete an electrical connection between the first luminaire and the second luminaire.
    Type: Application
    Filed: December 21, 2016
    Publication date: June 21, 2018
    Inventors: Donald Walker, Qingcong Hu, Boris Karpichev, Andrew Bendtsen, Kurt Wilcox
  • Publication number: 20180128961
    Abstract: In one aspect, optic assemblies and waveguide fixtures comprising the same are described herein. In an exemplary embodiment, an optic assembly includes an optic housing, an optical insert positioned in the optic housing, and a waveguide optic positioned in the optical insert. The waveguide optic includes a light extraction face and at least two sets of light extraction elements provided on the light extraction face. The at least two sets of light extraction elements are disposed on opposing sides of an axis of symmetry for extracting a symmetric lighting distribution.
    Type: Application
    Filed: June 16, 2017
    Publication date: May 10, 2018
    Inventors: Jin Hong LIM, Kurt WILCOX, Boris KARPICHEV, Donald WALKER
  • Patent number: 9894740
    Abstract: A lighting fixture includes an LED light source that outputs light for general illumination in response to a drive signal, and a driver module configured to provide the drive signal in response to an intelligent lighting module (ILM) instruction. An ILM that is separate from the driver module is provided and has a first plurality of sensors, a first communication interface, a second communication interface, and first control circuitry. The control circuitry of the ILM is configured to communicate with at least one remote entity via the first communication interface as well as generate the ILM instruction for the driver module based on sensor data gathered from the first plurality of sensors, remote entities, or a combination thereof. The ILM instruction is provided to the driver module via the second communication interface and used by the driver module to control the drive signal for the LED array.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: February 13, 2018
    Assignee: Cree, Inc.
    Inventors: Kory Liszt, Donald Walker
  • Patent number: 9879071
    Abstract: The application identifies novel fragments of alpha-synuclein in patients with Lewy Body Disease (LBD) and transgenic animal models thereof. These diseases are characterized by aggregations of alpha-synuclein. The fragments have a truncated C-terminus relative to full-length alpha-synuclein. Some fragments are characterized by a molecular weight of about 12 kDa as determined by SDS gel electrophoresis in tricine buffer and a truncation of at least ten contiguous amino acids from the C-terminus of natural alpha-synuclein. The site of cleavage preferably occurs after residue 117 and before residue 126 of natural alpha-synuclein. The identification of these novel fragments of alpha-synuclein has a number of application in for example, drug discovery, diagnostics, therapeutics, and transgenic animals.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: January 30, 2018
    Assignee: Prothena Biosciences Limited
    Inventors: Tamie J. Chilcote, Jason Goldstein, John P. Anderson, Donald Walker
  • Publication number: 20170369437
    Abstract: The invention relates to a novel process for preparing ?-carboxamide pyrrolidine derivatives, in particular (2S, 5R)-5-(4-((2-fluorobenzyl)oxy)phenyl)pyrrolidine-2-carboxamide, and to novel intermediates for use in said process along with processes for preparing said intermediates.
    Type: Application
    Filed: December 23, 2015
    Publication date: December 28, 2017
    Inventors: David MacPherson, David WITTY, Gerard GIBLIN, Michael WILLIAMS, Donald WALKER, William KIESMAN, Tamera MACK
  • Publication number: 20170204173
    Abstract: The application identifies novel fragments of alpha-synuclein in patients with Lewy Body Disease (LBD) and transgenic animal models thereof. These diseases are characterized by aggregations of alpha-synuclein. The fragments have a truncated C-terminus relative to full-length alpha-synuclein. Some fragments are characterized by a molecular weight of about 12 kDa as determined by SDS gel electrophoresis in tricine buffer and a truncation of at least ten contiguous amino acids from the C-terminus of natural alpha-synuclein. The site of cleavage preferably occurs after residue 117 and before residue 126 of natural alpha-synuclein. The identification of these novel fragments of alpha-synuclein has a number of application in for example, drug discovery, diagnostics, therapeutics, and transgenic animals.
    Type: Application
    Filed: March 22, 2017
    Publication date: July 20, 2017
    Inventors: Tamie J. Chilcote, Jason Goldstein, John P. Anderson, Donald Walker
  • Patent number: 9552143
    Abstract: Exemplary systems and methods for interaction with water usage information are provided. In various embodiments, a method comprises receiving water usage data from a meter device, receiving an identifier from a user associated with the meter device, providing an interactive interface to the user, the interactive interface conveying at least some water usage information based on the water usage data, receiving a first characterization of a first water activity from the user, generating a visualization based on the water usage information and the first characterization of the first water activity, and displaying the visualization.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: January 24, 2017
    Assignee: Badger Meter, Inc.
    Inventors: Shahram Javey, Patrick Rodriguez, Donald Walker
  • Patent number: 9547133
    Abstract: An optical device comprising a sealed waterproof housing comprising at least one LED disposed within the housing; a transparent window to allow light from the LED to be emitted from the housing; a non-imaging light element for coupling light from the LED into a plurality of side emitting optical fibers connected to the housing; and a fixing portion for securing the plurality of side-emitting optical fibers into a coupling position adjacent to the window to allow light to pass between the housing and the plurality of optical fibers, via the transparent window. The fixing portion is adapted to allow connection and/or disconnection of the plurality of optical fibers without opening or breaking a seal of the sealed waterproof housing.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: January 17, 2017
    Assignee: UNIVERSITY COURT OF THE UNIVERSITY OF ST ANDREWS
    Inventors: Malcolm Harry Dunn, Graham M. Miller, Donald Walker
  • Patent number: D927027
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: August 3, 2021
    Assignee: IDEAL Industries Lighting LLC
    Inventors: Kurt Wilcox, Donald Walker, Curt Progl, Randall Levy Bernard
  • Patent number: D1013243
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: January 30, 2024
    Assignee: IDEAL Industries Lighting LLC
    Inventors: Kurt Wilcox, Donald Walker, Curt Progl, Randall Levy Bernard