Patents by Inventor Roberto Mona

Roberto Mona 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 for the preservation of an activated sludge
    Patent number: 4231862
    Abstract: A method for the preservation of activated sludge of a waste water purification stage, wherein preservation of such activated sludge is accomplished by flushing with a gas mixture containing at least carbon dioxide and a low oxygen content.
    Type: Grant
    Filed: March 22, 1979
    Date of Patent: November 4, 1980
    Assignee: Sulzer Brothers Limited
    Inventors: Roberto Mona, Jurgen Gnieser