Patents by Inventor Reijo Hamalainen

Reijo Hamalainen 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).

  • High frequency transmitter
    Patent number: 4228539
    Abstract: The components of a transistor oscillator are mounted on an end cap rotatably mounted on the outer tube of a cavity resonator which stabilizes the oscillator. The intensity with which a high frequency is applied to the cavity resonator is adjustable by rotation of the end cap.
    Type: Grant
    Filed: December 28, 1978
    Date of Patent: October 14, 1980
    Assignee: Valsala Oy
    Inventor: Reijo Hamalainen