Patents by Inventor Jean-Pierre Desne

Jean-Pierre Desne 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).

  • Filter arrangement for suppressing an AC voltage superposed on a DC voltage present across poles of a DC voltage source
    Patent number: 5598123
    Abstract: A filter arrangement an AC voltage superposed on a DC voltage present across first (KO) and second (HO) poles of a DC voltage source. The arrangement includes between these first (KO) and second (HO) poles, a series coupling of a capacitance (C1) and an impedance (R5), and an amplifier arrangement (N1,C2,R2,C3,R3, C4,R4,D1,D2) that has an inverting input terminal which is coupled to the first pole (KO) and an output terminal which is coupled a the junction node of the capacitance (C1) and the impedance (R5).
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: January 28, 1997
    Assignee: Alcatel N.V.
    Inventor: Jean-Pierre Desne