Patents by Inventor Charles D. Beristain

Charles D. Beristain 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).

  • Patent number: 4530029
    Abstract: A plurality of two-plate capacitive pressure sensors with low parasitic capacitance and easily accessible plates are made with microcircuit and thin film technology by depositing a thin layer of glass over a plurality of thin, rigid plates and thin, narrow electrodes previously deposited on a thick glass dielectric substrate, by etching cavities in the thin layer of glass over the plates, and by anodically bonding, in vacuum, thin, doped silicon diaphragms to the thin layer of glass to form variable capacitors each of whose capacitance varies with the pressure outside the sensor.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: July 16, 1985
    Assignee: United Technologies Corporation
    Inventor: Charles D. Beristain