Patents by Inventor Hartmut S. Schweda

Hartmut S. Schweda 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).

  • Atomic frequency standard
    Patent number: 5387881
    Abstract: The atomic frequency standard has a heating element (58) surrounding an enclosure (43) which defines a microwave resonance cavity (42). The heating element supplies heat to an absorption cell (41) located in the cavity. The absorption cell (41) is surrounded by electrodes (45a-45d) which act to enhance and orient the oscillating magnetic field in the region of the absorption cell. Thermally conductive members (47a-47d) connect the electrodes (45a-45d) to the enclosure (43) to better control the temperature of the cell while retaining the advantages due to the presence of the electrodes (45a-45d).
    Type: Grant
    Filed: March 9, 1993
    Date of Patent: February 7, 1995
    Assignee: Observatoire Cantonal de Neuchatel
    Inventors: Hartmut S. Schweda, Giovanni Busca, Pascal Rochat