Patents Assigned to EMPA Testmaterialien AG
  • Standardized testing of the quality of washing, cleaning and drying processes in aggregates
    Patent number: 7219542
    Abstract: A test medium and the use of a corresponding test material are provided for detecting the mechanical load in different assemblies, such as, for example, washing, cleaning and drying machines. A substrate is used, which under mechanical stress loses part of its volume, its weight, or its area, the loss then related to the treatment or processing in the assemblies. The test medium is preferably formed by a fabric composite.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: May 22, 2007
    Assignee: EMPA Testmaterialien AG
    Inventors: Daniel Fäh, Felix Frey