Patents by Inventor Wilhelmus Pulles

Wilhelmus Pulles 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).

  • Treatment of water
    Patent number: 7306732
    Abstract: A process (10) for treating sulphate-containing water (28) includes feeding the water into a biological sulphate reduction stage (12) containing a complex carbon source (18). The water is subjected to biological sulphate reduction in the presence of an electron donor source, thereby to reduce sulphates in the water to sulphides and to produce alkalinity. The complex carbon source is contacted with water containing higher sulphide and alkalinity concentrations or levels than the sulphate-containing feed water, thereby converting complex carbon molecules to electron donors. The, or another, electron donor source is regularly added to the biological sulphate reduction stage (12).
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: December 11, 2007
    Assignee: Pulles Howard & De Lange, Inc.
    Inventors: Wilhelmus Pulles, Peter Dale Rose
  • Treament of water
    Publication number: 20040168975
    Abstract: A process (10) for treating sulphate-containing water (28) includes feeding the water into a biological sulphate reduction stage (12) containing a complex carbon source (18). The water is subjected to biological sulphate reduction in the presence of an electron donor source, thereby to reduce sulphates in the water to sulphides and to produce alkalinity. The complex carbon source is contacted with water containing higher sulphide and alkalinity concentrations or levels than the sulphate-containing feed water, thereby converting complex carbon molecules to electron donors. The, or another, electron donor source is regularly added to the biological sulphate reduction stage (12).
    Type: Application
    Filed: March 8, 2004
    Publication date: September 2, 2004
    Inventors: Wilhelmus Pulles, Peter Dale Rose