Patents by Inventor Benno Dreier

Benno Dreier 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).

  • Protective circuit for a subscriber line circuit and a subscriber line circuit having such a protective circuit
    Patent number: 5537287
    Abstract: Protective circuit with a threshold circuit for discharging overvoltage surges to ground and with a low-value resistor positioned in a line wire at the subscriber's end meets a higher level of lightning protection by connecting a voltage-limiting component (V1, V2) in parallel with the low-value resistor (R1, R2). Such may a varistor connected in parallel with each of the series low-value feed or sensing resistors. The invention meets symmetry requirements, places low voltage requirements on low-value resistors and preceding parallel components, makes use of inexpensive voltage-limiting components and thereby results in cost saving.
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: July 16, 1996
    Assignee: Alcatel N. V.
    Inventor: Benno Dreier
  • Complex capacitive impedance with a voltage follower circuit
    Patent number: 4607243
    Abstract: A complex capacitive impedance (Z) whose capacitance value is considerably larger than the total capacitance of the components used in it is implemented by connecting a capacitive impedance (Z3) in series with a first resistor (R1) to form a voltage divider, and bypassing the first resistor (R1) with a voltage follower circuit (SFS).
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: August 19, 1986
    Assignee: International Standard Electric Corporation
    Inventor: Benno Dreier