Patents by Inventor Henry Derewonko

Henry Derewonko 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).

  • Encapsulating box for a power semiconductor with improved input-output insulator
    Patent number: 4698661
    Abstract: The invention relates to an encapsulating box for a semiconductor operating in the range 2 to 20 GHz.At these frequencies, existing boxes have a metal base, an insulating frame and a cover. Two input - output connections pass through the frame. A leak line forms between the input and output by stray capacitive coupling of the connections with the welding metal bands of the cover. The invention opposes this input - output coupling by metallization of the box, with reserves for resists around the connection passages. The metal film joining the welding metal films to the electrical earth of the base reflects the power taken by capacitive coupling on the connections.Insulation obtained: -30 db at 15 GHz. Application to ultra-high frequency components.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: October 6, 1987
    Assignee: Thomson-CSF
    Inventors: Guy Bessonneau, Bernard Carnez, Henry Derewonko, Joel Lepage