Patents by Inventor Ralf M. Saal

Ralf M. Saal 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 and apparatus for cleaning textiles
    Patent number: 5423921
    Abstract: The invention relates to an apparatus for cleaning textiles by means of FCHC-free solvents on a benzine basis, comprising a cleaning machine, distillation section, recovery section and drier, and is characterized by a means for injecting protective gas into the drier.
    Type: Grant
    Filed: July 7, 1993
    Date of Patent: June 13, 1995
    Inventors: Hans-Udo Saal, Ralf M. Saal