Patents by Inventor Cathy Feray

Cathy Feray 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 regulating the residual free chlorine in water
    Patent number: 5011613
    Abstract: A method for regulating the residual free chlorine in drinking water, characterized in that the regulation is carried out by introduction of a quantity of chlorine determined as a function of the chlorine demand at "the head" of the line, that is upstream of the water treatment or storage line, while obtaining in the distribution network, water having an acceptable residual free chlorine content. The chlorine demand of the water at the inlet of the treatment, or storage line is rapidly determined by accelerating, the reactions tied to disinfection by heating so as to obtain over a short period (from 5 to 10 minutes) water having a residual free chlorine content corresponding to the required value.
    Type: Grant
    Filed: January 18, 1990
    Date of Patent: April 30, 1991
    Assignee: Lyonnaise des Eaux
    Inventors: Cathy Feray, Conrad Hubele