Patents by Inventor Robert R. Gallagher

Robert R. Gallagher 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).

  • Identification system with a passive activator
    Patent number: 5523746
    Abstract: An identification system that employs a passive activator 320 to transmit an identification code. From a low frequency electromagnetic field, the passive activator derives AC voltage and converts it to DC pulses. The DC pulses energizes the activator in order to transmit the identification code within one of the DC pulses. A controller 100, upon receiving an authorized code, generates an output for activating a device.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: June 4, 1996
    Inventor: Robert R. Gallagher