Patents by Inventor David Lee Alexander

David Lee Alexander 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).

  • Magnetic mixers
    Patent number: 11969701
    Abstract: The system and method of the invention pertains to an axial flux stator is implemented to replace the drive-end magnets and the drive motor. The axial flux stator comprises a control circuit to control the voltage and current provided to the stator, to measure the torque and speed of rotation, and to measure the magnetic flux and magnetic flux density produced by the axial flux stator and impeller magnets, individually or in combination. The axial flux stator comprises a plurality of current carrying elements to produce magnetic flux in an axial direction and drive the impeller.
    Type: Grant
    Filed: November 28, 2020
    Date of Patent: April 30, 2024
    Assignee: Global Life Sciences Solutions USA LLC
    Inventors: James Pellegrino Alexander, Klaus Gebauer, David Allan Torrey, Ashraf Said Atalla, Sima Didari, Richard Lee Damren
  • Portable dip-coating system for applying liquid coating materials, and related methods
    Publication number: 20100215859
    Abstract: A dip-coating system incorporates familiar materials into a totally unique configuration that provides users with a unique portable, environmentally friendly, cost effective and high quality coating application system for many liquid coating materials like stains and paints. Advantages of the dip-coating system vs.
    Type: Application
    Filed: February 20, 2010
    Publication date: August 26, 2010
    Inventor: David Lee Alexander