Patents by Inventor Jacques Journeau

Jacques Journeau 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).

  • DC voltage converter with improved efficiency
    Patent number: 6031742
    Abstract: A DC voltage converter is intended to multiply an input voltage and includes N elementary cells (ECi) in a cascade arrangement, each cell being intended to store the value of the input voltage in two capacitors (Ci1, Ci2). The charging and discharging of the capacitors (Ci1, Ci2) is controlled by transistors (Ni1, Ni2) whose conduction is controlled by the same control signal.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: February 29, 2000
    Assignee: U.S. Philips Corporation
    Inventor: Jacques Journeau
  • Integrated device combining a bipolar transistor and a field effect transistor
    Patent number: 5488241
    Abstract: An integrated device combines a bipolar transistor (10) and a junction field effect transistor (12) so as to produce an output voltage (Vd) which is higher than the breakdown voltage (BV.sub.CEO) of the bipolar transistor (10). A lateral extension (30) of the base zone (28), which forms a gate, is provided with an opening (38) in which a drain region (40) of the field effect transistor is situated. A heavily doped peripheral region (36) of the same type as the drain region (40) surrounds the lateral extension (30) on three sides, while a heavily doped buried layer region (34), which forms a conductive part of the collector of the bipolar transistor (10), extends to below the peripheral region (36) and forms with the latter the source of the field effect transistor (12). The resulting device has substantially improved breakdown voltage characteristics.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: January 30, 1996
    Assignee: U.S. Philips Corporation
    Inventor: Jacques Journeau