Patents by Inventor Nicolo De Stena

Nicolo De Stena 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).

  • Comb-line band-pass filters in the microwave field
    Patent number: 5012210
    Abstract: A comb-line band-pass filter with circular cross section is made up of internal rods constituting the resonators of the filter and brought to resonance by the use of tuning screws and alternating with coupling screws. In the filter the rods are inserted in such a manner that each one is rotated in relation to the preceding one by an angle of 0.degree.<.alpha.<90.degree. while the coupling screws are placed at an intermediate angle. For equal electrical characteristics the length of the filter is also a function of the rotation angle of the rods.
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: April 30, 1991
    Assignee: Siemens Telecomunicazioni S.p.A.
    Inventors: Franco Marconi, Nicolo De Stena