Patents by Inventor Nicholas R. Blandford

Nicholas R. Blandford 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).

  • Desalination scale inhibitors
    Patent number: 7862727
    Abstract: A method and composition for processing natural water such as seawater, brackish, and estuarine water wherein the water is concentrated with or without heating comprising adding to the water (I) a water-soluble polymeric phosphonate and (II) a water-soluble polycarboxylate to control scale formation and deposition. Optionally a water -soluble poly[isopropenylphosphonic acid] can also be utilized as component (I) without the addition of component (II).
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: January 4, 2011
    Assignee: General Electric Company
    Inventors: Nicholas R. Blandford, Libardo A. Perez, William S. Carey
  • Polymeric chelant and coagulant to treat metal-containing wastewater
    Patent number: 7722841
    Abstract: The present invention is directed to the use of a combination of a polymeric chelant and coagulant to treat metal containing wastewater. More particularly, the invention is directed at removing copper from CMP wastewater. The composition includes a combination of (a) a polymeric chelant derived from a polyamine selected from the group consisting of diethylenetriamine (DETA), triethylenetetraamine (TETA), tertraethylenepentaamine (TEPA), poly[vinylamine], and branched or linear poly[ethylenimine] (PEI); and (b) a water soluble or dispersible copolymer of a tannin and a cationic monomer selected from the group consisting of methyl chloride or dimethyl sulfate quaternary salt of dimethyl aminoethyl acrylate, diethylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, dimethylaminopropyl methacrylamide, dimethylaminopropyl acrylamide, and diallyl dimethyl ammonium chloride.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: May 25, 2010
    Assignee: General Electric Company
    Inventors: Baraka Kawawa, Stephen R. Vasconcellos, William Sean Carey, Nicholas R. Blandford
  • Desalination Scale Inhibitors
    Publication number: 20080223790
    Abstract: A method and composition for processing natural water such as seawater, brackish, and estuarine water wherein the water is concentrated with or without heating comprising adding to the water (I) a water-soluble polymeric phosphonate and (II) a water-soluble polycarboxylate to control scale formation and deposition. Optionally a water-soluble poly[isopropenylphosphonic acid] can also be utilized as component (I) without the addition of component (II).
    Type: Application
    Filed: September 24, 2004
    Publication date: September 18, 2008
    Inventors: Nicholas R. Blandford, Libardo A. Perez, William S. Carey
  • Methods for removing metals from plating operation
    Patent number: 7291273
    Abstract: The present invention relates to compounds and methods for removing metals, e.g., ionic cobalt from an electroless plating operation, preferably to levels less than 5 ppm. The metals can then be either landfilled or regenerated for electrowinning and reuse. The invention utilizes an ion exchange media comprised of a silica backbone and functionalized with phosphonate groups.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: November 6, 2007
    Assignee: General Electric Company
    Inventors: Stephen R. Vasconcellos, Nicholas R. Blandford