Patents by Inventor David Walters

David Walters 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).

  • Maize inbred PH41BB
    Patent number: 10159209
    Abstract: A novel maize variety designated PH41BB and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH41BB with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH41BB through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby are provided. Hybrid maize seed, plants or plant parts are produced by crossing the variety PH41BB or a locus conversion of PH41BB with another maize variety.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: December 25, 2018
    Assignee: PIONEER HI-BRED INTERNATIONAL, INC.
    Inventor: David Walter Whitaker
  • TIRE AND WHEEL ASSEMBLY LIFTING DEVICE
    Publication number: 20180345725
    Abstract: The present disclosure relates generally to devices and methods which use the mechanical advantage of a lever and fulcrum along with the use of force from a user's body, foot, and leg muscles, to more ergonomically and safely install wheel assemblies on vehicles while keeping the user's back at a more ergonomic angle and allowing for both of the installer's hands to remain free for stabilizing the wheel assembly during installation. The lifting device provides a foot pedal, a lifting pad and a pivot point to position a wheel assembly on a hub and/or wheel studs.
    Type: Application
    Filed: June 5, 2017
    Publication date: December 6, 2018
    Applicant: Tealcraft, LLC
    Inventor: David Walter Teal
  • NON-CONTACT LEVEL SENSING FOR LOW DIELECTRIC CONSTANT INKS
    Publication number: 20180326661
    Abstract: A three dimensional (3D) printing system includes an ink cartridge providing ink to a printhead and a controller. The ink cartridge also includes a flag material and a sensor component. The ink has a low dielectric constant and defines an upper surface having a vertical position defining an ink level. The flag material has a high dielectric constant and is disposed upon the upper surface of the ink. The sensor component includes a vertical arrangement of electrodes proximate to the ink. The controller is coupled to the sensor electrodes and is configured to: (1) scan sensor electrodes to determine a capacitance between adjacent pairs of electrodes, (2) identify at least one pair of electrodes having a peak capacitance value relative to capacitance values of remaining pairs of electrodes, and (3) estimate the ink level based upon the identification.
    Type: Application
    Filed: April 20, 2018
    Publication date: November 15, 2018
    Inventor: David Walter Johnson
  • Chemical injection to increase production from gas wells
    Patent number: 10094201
    Abstract: There is described a chemical injection system for a natural gas well. An instrument monitors the production of gas from the well and the flow of chemicals injected into the well. The instrument controls the on and off time of a chemical injection pump that is attached to a chemical injection tank. The control is based for certain chemicals such as a surfactant on the gas flow rate in the production piping. The user of the system inserts in the instrument the setpoints associated with the well's flow rate. These setpoints determine for a given flow rate the on time for the chemical injection pump. Other chemicals can also be injected into the well using the system and the injection for those chemicals may be based on other criteria such as temperature, water rate, oil rate or pipeline flow rate.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: October 9, 2018
    Assignee: ABB Schweiz AG
    Inventor: David Walter Barry
  • Vehicle grill with reciprocal moveable louvers
    Patent number: 10093171
    Abstract: A grill assembly for attachment to a vehicle front end including a base grill portion, having a front surface, a back surface, a perimeter portion, and cross-rail portions. The cross-rail portions define a plurality of grill openings therebetween. A plurality of louvers are configured to communicate with the plurality of grill openings. The assembly is in communication with a controller to effectuate generally linearly reciprocal movement of at least one of the base grill portion or the plurality of louvers in a direction generally defined by a direction of travel of the vehicle to vary an amount of air flow through the plurality of grill openings.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: October 9, 2018
    Assignee: Lacks Enterprises, Inc.
    Inventor: David Walters
  • ONBOARD CONTROLLER FOR MULTISTATE WINDOWS
    Publication number: 20180267380
    Abstract: Onboard EC window controllers are described. The controllers are configured in close proximity to the EC window, for example, within the IGU. The controller may be part of a window assembly, which includes an IGU having one or more EC panes, and thus does not have to be matched with the EC window, and installed, in the field. The window controllers described herein have a number of advantages because they are matched to the IGU containing one or more EC devices and their proximity to the EC panes of the window overcomes a number of problems associated with conventional controller configurations.
    Type: Application
    Filed: May 11, 2018
    Publication date: September 20, 2018
    Inventors: Dhairya Shrivastava, Anshu A. Pradhan, Stephen C. Brown, David Walter Groechel, Robert T. Rozbicki
  • Apparatus and method for powering and networking a rail of a firearm
    Patent number: 10060705
    Abstract: A method, apparatus and system for networking accessories to a firearm or weapon wherein the accessories are powered from the rail and data is transferred between the accessories and the rail. In one embodiment, a weapon is provided, the weapon having: an upper receiver; a lower receiver; a powered accessory mounted to a rail of the upper receiver; and an apparatus for networking a microcontroller of the powered accessory to a microcontroller of the upper receiver and a microcontroller of the lower receiver, wherein the data is exclusively provided to the powered accessory from one of a plurality of coils located within the rail; and wherein the powered accessory further comprises a plurality of coils and the powered accessory is configured to determine when one of the plurality of coils of the powered accessory is adjacent to the one of the plurality of coils of the rail.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: August 28, 2018
    Assignee: COLT CANADA IP HOLDING PARTNERSHIP
    Inventors: David Walter Compton, Gary Edward Crocker
  • Storage Bitcell
    Publication number: 20180233194
    Abstract: A storage bitcell comprising a first inverter cross-coupled with a second inverter, both the first and second inverter being in a path between a first potential and a second potential; wherein a first isolator is connected in the path between the first inverter and the first potential. The storage bitcell has particular application as Static Random-Access Memory (SRAM) circuitry.
    Type: Application
    Filed: April 9, 2018
    Publication date: August 16, 2018
    Inventors: Parameshwarappa Anand Kumar Savanth, James Edward Myers, Pranay Prabhat, David Walter Flynn, Shidhartha Das, David Michael Bull
  • NO-OPERATION POWER STATE COMMAND
    Publication number: 20180217648
    Abstract: A system comprises a first domain 4 and second domain 6 which communicate via an interface 8. The first domain 4 transmits power state commands to the second domain 6 for controlling transitions of power states at the second domain 6. The power state commands include at least a power up command 50 for triggering a transition to a power up state and a power no-operation command 52 in response to which the second domain remains in the current one of the power states. The no-operation command 52 enables the second domain 6 to be left in either the power up state or a different power state even if the first domain 4 is powered down.
    Type: Application
    Filed: January 30, 2017
    Publication date: August 2, 2018
    Inventors: David Walter FLYNN, Vasan VENKATARAMAN
  • Power signal interface
    Patent number: 10007314
    Abstract: Mechanisms are provided for energy management signalling with an apparatus for processing data, such as a system-on-chip integrated circuit (2). Processing circuitry (6, 8, 10) is coupled to consumer energy interface circuitry (14, 16, 18) which communicates with energy management circuitry (4). The energy management signals which are communicated include a static power consumption signal indicative of a level of power consumption which is independent of processing operations being performed and a dynamic power consumption signal indicative of a level of dynamic power consumption which is dependent upon the processing operations being performed.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: June 26, 2018
    Assignee: ARM Limited
    Inventors: David Walter Flynn, James Edward Myers
  • Instrument and cartridge for performing assays in a closed sample preparation and reaction system employing electrowetting fluid manipulation
    Patent number: 10005080
    Abstract: In one embodiment, a multiplex fluid processing cartridge includes a sample well, a deformable fluid chamber, a mixing well with a mixer disposed therein, a lysis chamber including a lysis mixer, an electrowetting grid for microdroplet manipulation, and electrosensor arrays configured to detect analytes of interest. An instrument for processing the cartridge is configured to receive the cartridge and to selectively apply thermal energy, magnetic force, and electrical connections to one or more discrete locations on the cartridge and is further configured to compress the deformable chamber(s) in a specified sequence.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: June 26, 2018
    Assignees: GENMARK DIAGNOSTICS, INC., ADVANCED LIQUID LOGIC, INC.
    Inventors: Jon Faiz Kayyem, Sean Ford, Vamsee K. Pamula, Vijay Srinivasan, Scott Corey, Brian Murphy, David Walter Wright, Dominic Aiello
  • Onboard controller for multistate windows
    Patent number: 10001691
    Abstract: Onboard EC window controllers are described. The controllers are configured in close proximity to the EC window, for example, within the IGU. The controller may be part of a window assembly, which includes an IGU having one or more EC panes, and thus does not have to be matched with the EC window, and installed, in the field. The window controllers described herein have a number of advantages because they are matched to the IGU containing one or more EC devices and their proximity to the EC panes of the window overcomes a number of problems associated with conventional controller configurations.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: June 19, 2018
    Assignee: View, Inc.
    Inventors: Dhairya Shrivastava, Anshu A. Pradhan, Stephen C. Brown, David Walter Groechel, Robert T. Rozbicki
  • INSTRUMENT AND CARTRIDGE FOR PERFORMING ASSAYS IN A CLOSED SAMPLE PREPARATION AND REACTION SYSTEM EMPLOYING ELECTROWETTING FLUID MANIPULATION
    Publication number: 20180161769
    Abstract: In one embodiment, a multiplex fluid processing cartridge includes a sample well, a deformable fluid chamber, a mixing well with a mixer disposed therein, a lysis chamber including a lysis mixer, an electrowetting grid for microdroplet manipulation, and electrosensor arrays configured to detect analytes of interest. An instrument for processing the cartridge is configured to receive the cartridge and to selectively apply thermal energy, magnetic force, and electrical connections to one or more discrete locations on the cartridge and is further configured to compress the deformable chamber(s) in a specified sequence.
    Type: Application
    Filed: January 24, 2018
    Publication date: June 14, 2018
    Applicant: GENMARK DIAGNOSTICS, INC.
    Inventors: Jon Faiz KAYYEM, SEAN FORD, VAMSEE K. PAMULA, VIJAY SRINIVASAN, SCOTT COREY, BRIAN MURPHY, DAVID WALTER WRIGHT, DOMINIC AIELLO
  • Monitoring Circuit and Method
    Publication number: 20180150120
    Abstract: Broadly speaking, embodiments of the present techniques provide a voltage monitoring circuit for low power minimum-energy sensor nodes. The circuit comprises sensing circuitry to sense a monitored signal having a plurality of operating signal states; a first comparator having a first input for receiving an upper threshold signal; and a second comparator having a first input for receiving a lower threshold signal, the upper and lower threshold signals defining a range which includes at least one signal state of the plurality of operating states of the monitored signal, wherein the first and second comparators have a bias input for receiving a bias configuration setting, the bias configuration setting being selectable according to an operating signal state of the monitored signal.
    Type: Application
    Filed: November 26, 2016
    Publication date: May 31, 2018
    Inventors: Parameshwarappa Anand Kumar Savanth, Bal S. Sandhu, James Edward Myers, Alexander Stewart Weddell, David Walter Flynn
  • Maize hybrid X13K464
    Patent number: 9955660
    Abstract: A novel maize variety designated X13K464 and seed, plants and plant parts thereof are produced by crossing inbred maize varieties. Methods for producing a maize plant by crossing hybrid maize variety X13K464 with another maize plant are disclosed. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into X13K464 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. This invention relates to the maize variety X13K464, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of maize variety X13K464. This invention further relates to methods for producing maize varieties derived from maize variety X13K464.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: May 1, 2018
    Assignee: PIONEER HI-BRED INTERNATIONAL, INC.
    Inventors: Mark David Hoffbeck, Michael Phillip Jines, Jennifer Ann Steinke, Leah Viesselmann Stirling, Brandon Michael Wardyn, David Walter Whitaker
  • MODULE WITH COLLAPSIBLE FLUID CHAMBER AND ONBOARD FLUID CHAMBER COMPRESSION ELEMENT
    Publication number: 20180111119
    Abstract: A module for processing fluids includes one or more collapsible fluid chambers supported on a substrate, a compression element supported on the substrate and configured to be movable with respect to the one or more chambers, and an actuating element coupled to the compression element and configured to effect movement of the compression element relative to the one or more fluid chambers to collapse each fluid chamber by compressing the fluid chamber between the compression element and the substrate as the compression element moves over the fluid chamber.
    Type: Application
    Filed: December 20, 2017
    Publication date: April 26, 2018
    Applicant: GENMARK DIAGNOSTICS, INC.
    Inventor: DAVID WALTER WRIGHT
  • Onboard controller for multistate windows
    Patent number: 9946138
    Abstract: Onboard EC window controllers are described. The controllers are configured in close proximity to the EC window, for example, within the IGU. The controller may be part of a window assembly, which includes an IGU having one or more EC panes, and thus does not have to be matched with the EC window, and installed, in the field. The window controllers described herein have a number of advantages because they are matched to the IGU containing one or more EC devices and their proximity to the EC panes of the window overcomes a number of problems associated with conventional controller configurations.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: April 17, 2018
    Assignee: View, Inc.
    Inventors: Dhairya Shrivastava, Anshu A. Pradhan, Stephen C. Brown, David Walter Groechel, Robert T. Rozbicki
  • Storage bitcell with isolation
    Patent number: 9940993
    Abstract: A storage bitcell comprising a first inverter cross-coupled with a second inverter, both the first and second inverter being in a path between a first potential and a second potential; wherein a first isolator is connected in the path between the first inverter and the first potential. The storage bitcell has particular application as Static Random-Access Memory (SRAM) circuitry.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: April 10, 2018
    Assignee: ARM Limited
    Inventors: Parameshwarappa Anand Kumar Savanth, James Edward Myers, Pranay Prabhat, David Walter Flynn, Shidhartha Das, David Michael Bull
  • Communication between voltage domains
    Patent number: 9935634
    Abstract: An integrated circuit including a first voltage domain incorporates real time clock circuitry that communicates via communication circuitry with processing circuitry contained within a second voltage domain. The communication circuitry includes first parallel-to-serial conversion circuitry located within the first voltage domain, level shifting circuitry for passing serial signals between the voltage domains and second parallel-to-serial circuitry located in the second voltage domain.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: April 3, 2018
    Assignee: ARM Limited
    Inventors: David Walter Flynn, James Edward Myers
  • Apparatus and method for powering and networking a rail of a firearm
    Patent number: 9921028
    Abstract: A method, apparatus and system for networking accessories to a firearm or weapon wherein the accessories are conductively powered from the rail and data is transferred between the accessories and the rail via conductive coupling. In one embodiment, a weapon is provided, the weapon having: an upper receiver; a lower receiver; a powered accessory mounted to a rail of the upper receiver; and an apparatus for conductively networking a microcontroller of the powered accessory to a microcontroller of the upper receiver and a microcontroller of the lower receiver, wherein the data is exclusively provided to the powered accessory from the rail.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: March 20, 2018
    Assignee: COLT CANADA IP HOLDING PARTNERSHIP
    Inventors: David Walter Compton, Brenton Stewart Teed