Patents by Inventor Rolf Olof Nilsson

Rolf Olof Nilsson 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).

  • Process for the preparation of a coagulating chemical comprising dissolving a solid zeolite in a solution of trivalent metal salt
    Patent number: 5662826
    Abstract: The present invention relates to a process for the preparation of a coagulant for water purification, in particular purification of sewage water, for pulp and paper manufacture, for dewatering organic matter, for concentrating minerals, and containing a metal salt and silicate, whereby a solid zeolite is dissolved in a solution of trivalent metal salt in a molar ratio Me.sup.3+ :Si of >2:1, preferably 2-500:1, as well as a coagulant.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: September 2, 1997
    Assignee: Kemira Kemi Aktiebolag
    Inventors: Rolf Olof Nilsson, Kjell-Erik Stendahl