Patents by Inventor Manfred Kickartz

Manfred Kickartz 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).

  • Ultrasonic measuring device, especially suited to non-destructive testing of materials
    Patent number: 5373741
    Abstract: An ultrasonic measuring device that is especially suited to nondestructive testing of materials is fitted with an ultrasound test head 72, a transmitter (74) and a receiver (76) that is characterized by a broadband logarithmic amplifier (78). This amplifier consists of several amplifier stages that are identical in construction and connected in series. Each amplification stage is characterized by the fact that it contains two transistorized individual amplifiers, namely a first and a second differential amplifier that are connected to one another and whose transistors (20, 22; 24, 26) are each interconnected at their base and at their collector. Each of these transmitters is connected at the emitters via inverse feedback resistors (34, 36; 40, 42) to a constant-current source (46, 50).
    Type: Grant
    Filed: June 24, 1993
    Date of Patent: December 20, 1994
    Assignee: Krautkramer GmbH & Co.
    Inventors: Klaus Volkmann, Horst Pollok, Manfred Kickartz