Patents by Inventor Guillaume Cogat

Guillaume Cogat 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).

  • Process for controlling at least one IGBT type transistor enabling its operation under irradiation
    Patent number: 5969569
    Abstract: This invention relates to a process for controlling at least one IGBT type transistor enabling its operation under irradiation, in which the value of the threshold value Vge.sub.s of the gate-emitter voltage of a first IGBT transistor (30) under irradiation is measured, and the voltage applied between the gate and the emitter of at least one second IGBT transistor under irradiation is varied during operation, so as to slave the threshold voltage Vge.sub.s of this (these) IGBT transistor(s) to a set value despite the drift caused by irradiation.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: October 19, 1999
    Assignees: Commissariat a l'Energie Atomique, Compagnie Generale Des Matieres Nucleaires
    Inventors: Michel Marceau, Guillaume Cogat