Patents by Inventor Horst Rettig

Horst Rettig 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 of processing waste water, in particular from malt factories and breweries
    Patent number: 6328893
    Abstract: There is described a method of processing waste water, in particular from malt factories and breweries, which in the operational use is contaminated with microorganisms, salts and organic compounds. To enable a reuse, it is proposed to subject the waste water to a reverse osmosis after a treatment with activated sludge, before it is recirculated to the operational use.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: December 11, 2001
    Assignees: Frings Recycling-AnLagen GmbH & Co. KG, Schwander GmbH
    Inventors: Karl Manderscheid, Johannes Lindemann, Horst Rettig