Patents by Inventor Robert Harnden

Robert Harnden 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).

  • METHODS FOR CONTROLLING PH IN WATER SANITIZED BY CHEMICAL OR ELECTROLYTIC CHLORINATION
    Publication number: 20090294381
    Abstract: The invention relates to the control of pH in water where hydroxyl ions are being produced by adding to the water an amount of transition metal salt sufficient to bind with hydroxyl into a slightly soluble or insoluble reaction product, thereby removing sufficient hydroxyl ion from the water to lower the pH thereof. This technique is particularly suitable for pH control in pool or spa water that is sanitized using chemical or electrolytic chlorination, where the sanitation process causes the pH in the water to rise. The invention also relates to apparatus for dispensing water treatment materials to water, and to methods for controlling phosphate levels and algae in water.
    Type: Application
    Filed: June 5, 2009
    Publication date: December 3, 2009
    Applicant: ZODIAC POOL CARE, INC.
    Inventors: Richard T. COFFEY, Robert HARNDEN
  • METHODS AND APPARATUSES FOR CONTROLLING CONDITIONS IN WATER
    Publication number: 20090223903
    Abstract: The invention relates to the control of pH in water, preferably pool/spa water along with the control and/or removal of algal populations, by adding to the water a desired synergistic amount of a lanthanide-containing compound, a transition metal salt ions sufficient to bind with hydroxyl into a slightly soluble or insoluble reaction product, thereby removing sufficient hydroxyl ion from the water to lower the pH thereof, and copper and/or silver to act as an algicide and potential pH affecting compound.
    Type: Application
    Filed: September 25, 2008
    Publication date: September 10, 2009
    Inventors: Richard T. Coffey, Kenneth Jenke, Robert Harnden, Matthew R. Hodges, Luis Fernando DelCorral
  • Fragrant monopersulfate compositions for water treatment and articles containing them
    Publication number: 20070032397
    Abstract: The invention relates to fragrant compositions for oxidizing organic compounds in pool or spa water, having an alkali metal monopersulfate, a fragrance, and an optional carrier, which do not have a multilayer tablet structure and which do not generate gas, fumes or significant heat on addition to water.
    Type: Application
    Filed: August 3, 2005
    Publication date: February 8, 2007
    Inventors: Richard Coffey, Robert Harnden, Heather Poetz
  • Methods for controlling pH in water sanitized by chemical or electrolytic chlorination
    Publication number: 20070012631
    Abstract: The invention relates to the control of pH in water where hydroxyl ions are being produced by adding to the water an amount of transition metal salt sufficient to bind with hydroxyl into a slightly soluble or insoluble reaction product, thereby removing sufficient hydroxyl ion from the water to lower the pH thereof. This technique is particularly suitable for pH control in pool or spa water that is sanitized using chemical or electrolytic chlorination, where the sanitation process causes the pH in the water to rise.
    Type: Application
    Filed: July 15, 2005
    Publication date: January 18, 2007
    Inventors: Richard Coffey, Micheal Haven, Robert Harnden