Patents by Inventor Hein Barend VAN HEERDEN

Hein Barend VAN HEERDEN 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).

  • WAKE-UP CIRCUIT
    Publication number: 20230389829
    Abstract: A wake-up circuit which includes a battery, a switch, an additional circuit and a detector which, responsive to incident light above a threshold level, closes the switch thereby to connect the battery to the additional circuit.
    Type: Application
    Filed: June 2, 2023
    Publication date: December 7, 2023
    Inventors: Frederick Johannes BRUWER, Hein Barend VAN HEERDEN, Douw Gerbrandt VAN DER MERWE, Jacobus Daniel VAN WYK