Patents by Inventor Luis Barragan Perez

Luis Barragan Perez 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).

  • Method for operating a frequency converter circuit
    Publication number: 20070135037
    Abstract: A frequency converter circuit has at least two outputs that are respectively connected to a load, in particular an induction coil. A first output is operated at a first switching frequency and a second output is simultaneously operated at a second switching frequency that is different from the first, in such a way that noise having a frequency generated by the superposition of the first switching frequency and the second switching frequency is produced. The frequency converter circuit is operated in such a way that the frequency of the noise is lower than a first cutoff frequency and/or is higher than a second cutoff frequency.
    Type: Application
    Filed: November 2, 2004
    Publication date: June 14, 2007
    Inventors: Luis Barragan Perez, Jose Pinilla, Pablo Blasco, Sergio Gil, Alfonso Perez, Fernando Aznar
  • Method for operating a frequency converter circuit
    Patent number: RE43263
    Abstract: A frequency converter circuit has at least two outputs that are respectively connected to a load, in particular an induction coil. A first output is operated at a first switching frequency and a second output is simultaneously operated at a second switching frequency that is different from the first, in such a way that noise having a frequency generated by the superposition of the first switching frequency and the second switching frequency is produced. The frequency converter circuit is operated in such a way that the frequency of the noise is lower than a first cutoff frequency and/or is higher than a second cutoff frequency. An induction cooking device includes first and second induction heating elements, and a frequency converter circuit including first and second power outputs electrically coupled to the first and second induction heating elements, respectively.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: March 27, 2012
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Luis A. Barragan Perez, Jose M. Burdio Pinilla, Pablo J. Hernandez Blasco, Sergio L. Gil, Alfonso L. Perez, Fernando M. Aznar