Patents by Inventor Ramiro Ramirez Ramirez

Ramiro Ramirez Ramirez 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).

  • Fixed cellular technical with a distinctive dial tone to indicate an emergency call is being placed
    Patent number: 5680439
    Abstract: Of special application in cellular mobile networks that communicate this terminal, via radio, with a base station to provide services of voice and/or data communications to a number of subscribers and which, in addition to the basic communications service, also support an emergency call service performed through the terminal in question by dialling a certain number. This terminal comprises means (41) for generating user signalling tones and which also generate an emergency call dial tone, different from the other tones already present, when a call process is initiated by the subscriber (5) in the case where the fixed cellular terminal is only capable of making emergency calls.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: October 21, 1997
    Assignee: Alcatel N.V.
    Inventors: Jose Maria Garcia Aguilera, Francisco Javier Leon Rubio, Ramiro Ramirez Ramirez