Patents by Inventor Charleen L. Kalina

Charleen L. Kalina 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).

  • Roadway warning system
    Patent number: 6262673
    Abstract: A roadway warning system includes a visual traffic directing device that is at a first status for a first status time period and that is at a second status for a second status time period. A transmitter transmits a signal for a first signal time period, and a receiver mounted on the vehicle receives the signal. An indicator connected to the receiver indicates that the visual traffic directing device is either at the first status or is about to change to the first status so that a driver of the vehicle is warned of the present or future status of the visual traffic directing device.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: July 17, 2001
    Inventor: Charleen L. Kalina