Patents by Inventor Jan Sikkenga

Jan Sikkenga 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).

  • Superconducting rectifier for the conversion of a relatively low alternating current into a relatively high direct current
    Patent number: 4709314
    Abstract: Superconducting rectifier for the conversion of a relatively low current from an alternating current supply source into a relatively high direct current, essentially consisting of a transformer, at least the secondary coil of which is constructed in semiconducting form, and superconducting switches for the passing of the alternating current induced in the secondary transformer coil through a load, in which the superconducting switches means consist of a commutating part and a blocking part which function independently of each other and are connected in series, and in which the increase in resistance (R) which the commutating part produces upon opening the switching means fulfils the condition ##EQU1## being appreciably lower than the increase in resistance which the blocking part produces upon opening the switches means.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: November 24, 1987
    Assignee: Holec Systemen En Componenten B.V.
    Inventors: Louis J. M. van de Klundert, Herman H. J. ten Kate, Jan Sikkenga, Maarten Groenenboom, Jacques Lisser