Patents by Inventor Fernand Buisson

Fernand Buisson 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).

  • Demagnetizable electropermanent magnetic holder
    Patent number: 5995358
    Abstract: A holder having at least one magnetizable body surrounded by a coil is demagnetized by passing through the coil a succession of groups of pulses. The pulses of each group are of the same polarity and the polarity of each group of pulses is opposite that of the preceding group while the current of the pulses of each group is less than that of the pulses of the preceding group. Each group has 2 to 8 identical pulses and the pulses are formed by clipping an incoming alternating-current line voltage.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: November 30, 1999
    Assignee: Parc D'Activites De La Grande Ile
    Inventors: Fernand Buisson, Pierre Doyelle, Delphin Sibue