Patents by Inventor Mauri Alila

Mauri Alila 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).

  • Electrically regulated filter having a selectable stop band
    Patent number: 6037848
    Abstract: A band-rejection filter (1) comprising transmission line resonators (2, 3) further comprises switching means (7, 8) to provide an electrical connection between each transmission line resonator and a certain fixed potential in response to a certain control signal. The fixed potential is advantageously the ground potential, whereby the control signal causes the resonators to be shunted and the frequency response of the filter to be changed into a low-pass-type frequency response.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: March 14, 2000
    Assignee: LK-Products OY
    Inventors: Mauri Alila, Tapio Rattila