Patents by Inventor Francisco Javier Diaz-Romo

Francisco Javier Diaz-Romo 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).

  • Photocontrol for electric lamps
    Patent number: 4008415
    Abstract: An improved photocontrol system for electrical lamps comprising the combination of photoelectric means responsive to the intensity of the ambient light for controlling the turning the lamps on and off, and an electronic timer for turning off the lamps at a preset time interval, after they have been turned on.
    Type: Grant
    Filed: December 11, 1974
    Date of Patent: February 15, 1977
    Assignee: Electrotec de Occidente, S.A.
    Inventors: Antonio De Avila-Serafin, Francisco Javier Diaz-Romo