Patents by Inventor Ioan Alexandru Ivan

Ioan Alexandru Ivan 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).

  • Micropositioning device with multidegrees of freedom for piezoelectric actuators and associated method
    Patent number: 9791491
    Abstract: A micropositioning device for a piezoelectric actuator includes a means for controlling an electric field applied to the piezoelectric actuator so as to deform the piezoelectric material, and means for simultaneous measurement of a variation of electric charge accumulated on the piezoelectric actuator resulting from the deformation; and means for acquiring measurements of the variation of electric charge, for processing these acquisitions and for estimating a displacement (x, y, z) of the piezoelectric actuator and/or an applied force.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: October 17, 2017
    Assignees: UNIVERSITE DE FRANCHE COMTE, ECOLE NATIONAL SUPERIEURE DE MECANIQUE ET DES MICROTECHNIQUES
    Inventors: Ioan Alexandru Ivan, Joël Agnus, Manitrarivo Rakotondrabe
  • Micropositioning Device With Multidegrees Of Freedom For Piezoelectric Actuators And Associated Method
    Publication number: 20150054520
    Abstract: A micropositioning device for a piezoelectric actuator includes a means for controlling an electric field applied to the piezoelectric actuator so as to deform the piezoelectric material, and means for simultaneous measurement of a variation of electric charge accumulated on the piezoelectric actuator resulting from the deformation; and means for acquiring measurements of the variation of electric charge, for processing these acquisitions and for estimating a displacement (x, y, z) of the piezoelectric actuator and/or an applied force.
    Type: Application
    Filed: March 22, 2013
    Publication date: February 26, 2015
    Applicants: Universite De Franche Comte, Ecole Nationale Superieure De Mecanique Et Des Microtechniques
    Inventors: Ioan Alexandru Ivan, Joël Agnus, Manitrarivo Rakotondrabe