Patents by Inventor Daniel Ray Schroeder

Daniel Ray Schroeder 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).

  • Transceiver squelch circuit
    Patent number: 4041390
    Abstract: A radio transceiver includes means to switch from the transmit to the receive mode. The disclosed squelch circuit operates in the receive mode to mute and unmute the receiver at different received signal levels to prevent undesirable muting during signal fading conditions. The squelch also provides a means to mute the receiver for a sufficient period allowing switching transients to die out after the transceiver has been switched from the transmit to the receive mode.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: August 9, 1977
    Assignee: Motorola, Inc.
    Inventor: Daniel Ray Schroeder