Patents by Inventor Miguel Jose Prieto

Miguel Jose Prieto 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).

  • Switched power converter utilizing a piezoelectric transformer
    Patent number: 6504734
    Abstract: The switched power converter comprises a first rectifier module (11-1) connected to a first capacitor (11-2) that, in turn, is connected to an excitation module (11-3) that applies a voltage to some input terminals (PT-1, PT-2) of a piezoelectric transformer (PT). A controller device (11-3-3) governs the excitation module (11-3) in order that the piezoelectric transformer (PT) works at constant frequency and regulates the power delivered to the output of the converter by enabling/disabling the voltage applied to the terminals (PT-1, PT-2). When the piezoelectric transformer (PT) is not transferring energy between its input terminals (PT-1, PT-2) and its output terminals (PT-3, PT-4), the converter output voltage is supplied by a second capacitor included in a second filter (11-6).
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: January 7, 2003
    Assignee: Alcatel
    Inventors: Jose Andres Navas Sabater, Mercedes Rivas Saiz, Juan Diez Gonzalez, Juan Martin Ramos, Fernando Nu{overscore (n)}o Garcia, Miguel Jose Prieto
  • Switched power converter
    Publication number: 20020085395
    Abstract: The switched power converter comprises a first rectifier module (11-1) connected to a first capacitor (11-2) that, in turn, is connected to an excitation module (11-3) that applies a voltage to some input terminals (PT-1, PT-2) of a piezoelectric transformer (PT).
    Type: Application
    Filed: December 20, 2001
    Publication date: July 4, 2002
    Applicant: ALCATEL
    Inventors: Jose Andres Navas Sabater, Mercedes Rivas Saiz, Juan Diaz Gonzalez, Juan Martin Ramos, Fernando Nuno Garcia, Miguel Jose Prieto