Patents by Inventor Jean F. Dulck

Jean F. Dulck 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).

  • Satellite and method to place this satellite in orbit by gravitational assistance
    Patent number: 5507454
    Abstract: Satellite and method for placing said satellite in orbit by lunar gravitational assistance.After placing the satellite into standard orbit (01) within a quasi-equatorial plane, the satellite is transferred onto a circumlunar orbit (02) so that the satellite traverses the sphere of influence S1 of the moon. On leaving this sphere, the orbit (03) is inside a plane inclined with respect to the equatorial plane. The orbit is then connected to the definitive orbit (04).
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: April 16, 1996
    Assignee: Centre National d'Etudes Spatiales
    Inventor: Jean F. Dulck