Patents by Inventor Alexander Bartels

Alexander Bartels 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).

  • HALLOYSITE NANOTUBES FOR SLOW RELEASE ASPHALTENE CONTROL CHEMICAL SQUEEZE TREATMENTS
    Publication number: 20240101889
    Abstract: The present disclosure provides methods and compositions for controlling asphaltenes in a subterranean formation. The compositions may include a halloysite nanotube. The nanotube has a lumen and a polymer, along with a charged surfactant, may be disposed in the lumen. A wax may be disposed on the nanotube. The wax may be disposed at either or both ends of the nanotube, thereby temporarily preventing the polymer and charged surfactant from leaving the lumen.
    Type: Application
    Filed: December 21, 2021
    Publication date: March 28, 2024
    Applicant: ChampionX USA Inc.
    Inventors: Jeremy Wayne BARTELS, Christopher Alexander RUSSELL, Duy T. NGUYEN, Rebecca Michele LUCENTE-SCHULTZ
  • Method and steering control apparatus for determining a correcting variable for adjusting servo steering torque in a vehicle steering system
    Patent number: 11565742
    Abstract: The invention relates to a method for adjusting a servo steering torque in a vehicle steering system, wherein the servo steering torque can be generated by an actuator of the vehicle steering system. The method comprises: receiving a driver's steering request, receiving a steering request from at least one driver assistance system, receiving at least one driving dynamics variable, determining a static state in which a change of the driver's steering request and the driving dynamics variable each is below a predetermined threshold, and if the static state has been determined, adjusting the servo steering torque by regulating, wherein a control variable for the regulation is determined based on a driver's steering request and the steering request by the driver assistance system.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: January 31, 2023
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Lars Stoltze, Alexander Bartels, Martin Sachwitz, Hendrik Fricke
  • Method And Steering Control Apparatus For Determining A Correcting Variable For Adjusting Servo Steering Torque In A Vehicle Steering System
    Publication number: 20200361526
    Abstract: The invention relates to a method for adjusting a servo steering torque in a vehicle steering system, wherein the servo steering torque can be generated by an actuator of the vehicle steering system. The method comprises: receiving a driver's steering request, receiving a steering request from at least one driver assistance system, receiving at least one driving dynamics variable, determining a static state in which a change of the driver's steering request and the driving dynamics variable each is below a predetermined threshold, and if the static state has been determined, adjusting the servo steering torque by regulating, wherein a control variable for the regulation is determined based on a driver's steering request and the steering request by the driver assistance system.
    Type: Application
    Filed: May 12, 2020
    Publication date: November 19, 2020
    Applicant: Volkswagen Aktiengesellschaft
    Inventors: Lars Stoltze, Alexander Bartels, Martin Sachwitz, Hendrik Fricke