Patents by Inventor Alexander Herb

Alexander Herb 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).

  • Method for examining a solidified and/or hardening material using ultrasound, receptacle and ultrasound sensor for carrying out the method
    Patent number: 6655213
    Abstract: A method is described for examining a solidifying and/or hardening material such as cement, concrete or the like, using ultrasound waves emitted by an ultrasound transmitter, which penetrate the solidifying and/or hardening material, are continuously measured and analyzed. During solidification and/or hardening of the material, the signal shapes of the ultrasound waves penetrating the material, are recorded. The change with time of the compression wave velocity and/or the relative energy of the ultrasound waves and/or the frequency spectra of the ultrasound waves is extracted from the ultrasound wave shapes during the entire course of solidification and/or hardening of the material. This change with time of the compression wave velocity and/or the relative energy of the ultrasound waves and/or the frequency spectra of the ultrasound waves is approximated through a compensating function, preferably the Boltzmann function.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: December 2, 2003
    Assignee: Universitat Stuttgart
    Inventors: H. W. Reinhardt, Christian W. Grosse, Alexander Herb, Bernd Weiler, Günther Schmidt