Patents by Inventor Hanspeter Roth

Hanspeter Roth 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 installation for the treatment of waste water to form useful water
    Patent number: 3939070
    Abstract: A method for the treatment of waste water to form useful water, comprising the steps of subjecting the waste water to a chemical flocculation treatment, floating the formed turbid portion of the waste water, and subjecting the clarified water to reverse osmosis filtration.The waste water treatment plant or installation for the performance of the aforesaid method comprises, in combination, apparatus for carrying out the chemical flocculation treatment, an electro flotation installation, and a reverse osmosis installation.
    Type: Grant
    Filed: July 10, 1974
    Date of Patent: February 17, 1976
    Assignee: "Swissair" Schweizerische Luftverkehr-AG
    Inventor: Hanspeter Roth