Patents by Inventor Donovan L. Erickson

Donovan L. Erickson 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).

  • Corrosion inhibiting compositions
    Patent number: 9657398
    Abstract: Compositions for inhibiting the corrosion of metals in contact with an aqueous system are provided. The corrosion inhibiting compositions may be used to maintain effective amounts of (1) an amino acid-based polymer, such as a polyaspartic acid compound, and (2) a dispersible and/or soluble tin compound in the aqueous system. The corrosion inhibiting compositions include the amino acid-based polymer and a dispersible and/or soluble tin compound and may optionally include a polycarboxylic acid chelating agent and/or a carboxylate/sulfonate functional copolymer.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: May 23, 2017
    Assignee: U.S. Water Services Inc.
    Inventors: Donovan L. Erickson, Roy A. Johnson, Matthew Ryan LaBrosse, Paul R. Young
  • Corrosion inhibiting methods
    Patent number: 9290850
    Abstract: Methods for inhibiting the corrosion of metals in contact with an aqueous system are provided. The method of inhibiting corrosion includes maintaining effective amounts of (1) an amino acid-based polymer, such as a polyaspartic acid compound, and (2) a dispersible and/or soluble tin compound in the aqueous system. The corrosion inhibiting components of the treatment may be added simultaneously or separately into the water of the aqueous system, i.e., provided either in a single treatment product or as separate products. Such a corrosion inhibiting method may optionally also include adding a polycarboxylic acid chelating agent and/or a carboxylate/sulfonate functional copolymer to the aqueous system.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: March 22, 2016
    Assignee: U.S. Water Services Inc.
    Inventors: Donovan L. Erickson, Roy A. Johnson, Matthew Ryan LaBrosse, Paul R. Young
  • CORROSION INHIBITING COMPOSITIONS
    Publication number: 20150284859
    Abstract: Compositions for inhibiting the corrosion of metals in contact with an aqueous system are provided. The corrosion inhibiting compositions may be used to maintain effective amounts of (1) an amino acid-based polymer, such as a polyaspartic acid compound, and (2) a dispersible and/or soluble tin compound in the aqueous system. The corrosion inhibiting compositions include the amino acid-based polymer and a dispersible and/or soluble tin compound and may optionally include a polycarboxylic acid chelating agent and/or a carboxylate/sulfonate functional copolymer.
    Type: Application
    Filed: June 23, 2015
    Publication date: October 8, 2015
    Applicant: U.S. WATER SERVICES INC.
    Inventors: Donovan L. Erickson, Roy A. Johnson, Matthew Ryan LaBrosse, Paul R. Young
  • CORROSION INHIBITING COMPOSITIONS AND METHODS
    Publication number: 20150118103
    Abstract: Compositions and methods for inhibiting the corrosion of metals in contact with an aqueous system are provided. The method of inhibiting corrosion includes maintaining effective amounts of (1) an amino acid-based polymer, such as a polyaspartic acid compound, and (2) a dispersible and/or soluble tin compound in the aqueous system. The corrosion inhibiting components of the treatment may be added simultaneously or separately into the water of the aqueous system, i.e., provided either in a single treatment product or as separate products. The single treatment single treatment product may include the amino acid-based polymer and a dispersible and/or soluble tin compound. Such a corrosion inhibiting composition may optionally also include a polycarboxylic acid chelating agent and/or a carboxylate/sulfonate functional copolymer.
    Type: Application
    Filed: October 31, 2013
    Publication date: April 30, 2015
    Inventors: Donovan L. Erickson, Roy A. Johnson, Matthew Ryan LaBrosse, Paul R. Young