Patents by Inventor Bertram Koelbli

Bertram Koelbli 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).

  • Voltage supply circuit
    Patent number: 5132893
    Abstract: In order to provide a voltage supply circuit with high efficiency, high control quality and with optimum utilization of the present energy the circuit comprises in combination a switching controller and a longitudinal voltage controller and a static starter circuit is provided, which supplies via a transistor the electronic components of the circuit with energy until a predetermined voltage is attained.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: July 21, 1992
    Assignee: Honeywell Inc.
    Inventors: Johannes-Artur Klein, Bertram Koelbli