Patents by Inventor Friedemann Löffler

Friedemann Löffler 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).

  • Patent number: 10176660
    Abstract: The invention relates to the fitness check of value documents. For at least two fitness criteria there is respectively determined with the aid of an unfit function an unfit degree of the particular value document. The unfit function clearly assigns an unfit degree to the fitness measurement values and has two threshold values, beyond which the unfit degree with respect to the relevant fitness criterion is 0 or 1. Between the threshold values there is an uncertainty range in which the unfit degree is, with respect to the relevant fitness criterion, between 0 and 1 and the unfit function behaves monotonously dropping or monotonously rising. Subsequently, the unfit degrees of different fitness criteria are combined into an unfit probability of the particular value document and on the basis of the unfit probability a fitness classification of the particular value document is carried out.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: January 8, 2019
    Assignee: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
    Inventors: Alfred Schmidt, Marcus Schmeisser, Dieter Stein, Friedemann Löffler, Sergii Kruglyk
  • Publication number: 20170161981
    Abstract: The invention relates to the fitness check of value documents. For at least two fitness criteria there is respectively determined with the aid of an unfit function an unfit degree of the particular value document. The unfit function clearly assigns an unfit degree to the fitness measurement values and has two threshold values, beyond which the unfit degree with respect to the relevant fitness criterion is 0 or 1. Between the threshold values there is an uncertainty range in which the unfit degree is, with respect to the relevant fitness criterion, between 0 and 1 and the unfit function behaves monotonously dropping or monotonously rising. Subsequently, the unfit degrees of different fitness criteria are combined into an unfit probability of the particular value document and on the basis of the unfit probability a fitness classification of the particular value document is carried out.
    Type: Application
    Filed: July 14, 2015
    Publication date: June 8, 2017
    Inventors: Alfred SCHMIDT, Marcus SCHMEISSER, Dieter STEIN, Friedemann LÖFFLER, Sergii KRUGLYK
  • Patent number: 6840365
    Abstract: The invention relates to an apparatus and corresponding method for examining objects, in particular documents of value, identification or security documents, having at least one detector device (1, 10-15) for detecting at least one property of an object to be examined (5) and for generating at least one detector signal (S) corresponding to the detected property, the detector device (1, 10-15) and the object (5) being movable relative to each other in a transport direction (T) and the detector device (1, 10-15) extending over at least a partial area of the object (5). For reliable examination of objects, in particular reliable determination of the position and/or nature of features on objects, at the same time as simple structure and simple evaluation, it is provided that the detector device (1, 10-15) has at least two extensions (A, B) of different magnitude in the transport direction (T).
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: January 11, 2005
    Assignee: Giesecke & Devrient GmbH
    Inventor: Friedemann Löffler