Patents by Inventor Andrea Agatha Potma

Andrea Agatha Potma 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 cleaning a waste water stream or the like
    Patent number: 5830357
    Abstract: The invention relates to a process for cleaning a waste water stream or the like, comprising:a desulphurization step, in the form of addition of a desulphurizing agent, and addition of a buffer; followed bya biodenitrification step carried out by micro-organisms which feed on the buffer remaining in the waste-water stream of the desulphurization step;wherein sulphur contamination and the like is removed in the desulphurization step and wherein nitrate contamination and the like as well an the buffer, are removed in the bio-denitrification step.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: November 3, 1998
    Assignee: N.V. Kema
    Inventors: Leonardus Hendrikus Joseph Vredenbregt, Andrea Agatha Potma, Gerrit Derk Enoch