Patents by Inventor Siegfried Gross

Siegfried Gross 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).

  • Optical time domain reflectometer and current voltage converter for use therein
    Patent number: 5123732
    Abstract: The invention provides a current-voltage converter comprising: an input port, amplifying means comprising an inverting amplifier (U1) having an inverting input terminal and an output terminal, the output terminal being coupled to the input port of the current-voltage converter via a resistor (RF). The invention is characterized in that a voltage clipping means is connected between the input port of the current-voltage converter and a fixed potential, that the inverting amplifier (U1) has a gain such that the maximum of the output voltage (U0) of a specific polarity of the inverting amplifier (U1) is the product of the gain of the current-voltage converter and the corresponding maximum voltage across the clipping means. Thus, saturation of the inverting amplifier can be avoided.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: June 23, 1992
    Assignee: Hewlett-Packard Company
    Inventors: Siegfried Gross, Michael Fleischer-Reumann
  • Guiding a mandrel or punch for piercing or cold-extrusion
    Patent number: 4416139
    Abstract: A piercing mandrel or punch, particularly for backward extrusion, is guided by a member which centers the mandrel or punch in the upper die cavity and is coupled thereto until abutting a centering shoulder in the die cavity; the guiding and centering function continues as the mandrel or punch begins and progresses in the cold flow-working process.
    Type: Grant
    Filed: June 1, 1981
    Date of Patent: November 22, 1983
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Heinrich Hesse, Anton Merkler, Siegfried Gross, Gerhard Radtke