Patents by Inventor Jerzy Jacek Kropielnicki

Jerzy Jacek Kropielnicki 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).

  • Coil construction
    Patent number: 5835066
    Abstract: A bifilar coil construction is used for isolating radio signals picked up by a motor vehicle window heating element from the power supply circuit for the heating element. The coil construction has two separate windings (9,10) which are arranged bodily alongside each other. In one embodiment there is an inner cylindrical winding (9) within and in contact with an outer cylindrical winding (10), and a two part pot core (15,16) is clamped within and around the windings (9,10).
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: November 10, 1998
    Assignee: Glass Antennas Technology Limited
    Inventors: Jerzy Jacek Kropielnicki, Keith Jeremy Twort, Brian Easter
  • Electrical signal separating device for combined windshield antenna and heater grid
    Patent number: 4086594
    Abstract: A device which can be interposed between a radio and an electrically heated window so as to enable the to a d.c. power source to effect heating of same. The device comprises a blocking circuit having mutually coupled coils interposed between the d.c. power source and the terminals of the heating element of the window.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: April 25, 1978
    Assignee: B.S.H. Electronics (Manchester) Limited
    Inventors: Barbara Ewa Kropielnicki, Jerzy Jacek Kropielnicki
  • Coil construction
    Patent number: RE37835
    Abstract: A bifilar coil construction is used for isolating radio signals picked up by a motor vehicle window heating element from the power supply circuit for the heating element. The coil construction has two separate windings (9,10) which are arranged bodily alongside each other. In one embodiment there is an inner cylindrical winding (9) within and in contact with an outer cylindrical winding (10), and a two part pot core (15,16) is clamped within and around the windings (9,10).
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: September 10, 2002
    Assignee: Glass Antennas Technology Limited
    Inventors: Jerzy Jacek Kropielnicki, Keith Jeremy Twort, Brian Easter