Patents by Inventor Dawn N. Lock

Dawn N. Lock 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).

  • Composition and method for the treatment of sunscreen stains in textiles
    Patent number: 9670438
    Abstract: A composition having a pH of less than 7 and including one or more surfactants, one or more chelating agents, and one or more acid in an aqueous solvents is used to treat stains on a textile caused by sunscreen lotion. Sunscreen stains in textiles can be reduced to a ?b* of 5 or less as compared to the textile before staining. The method includes preparing a use solution having a pH of less than 7 by applying to the wash solution a solid composition comprising about 15 to about 60 wt-% of surfactants; about 4 to about 18 wt-% chelating agents; and about 10 to about 40 wt-% of an acid or a salt thereof, and washing the textile in the wash solution, where the method is capable or reducing the stain in the textile to a ?b* of 7 or less as compared to the textile before staining.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: June 6, 2017
    Assignee: Ecolab USA Inc.
    Inventors: Stephen B. Christensen, Jessica R. Bull, Kirsten M. Weeks, Dawn N. Lock, Joanna Ai Pham
  • COMPOSITION AND METHOD FOR TREATMENT OF STAINS IN TEXTILES
    Publication number: 20160222329
    Abstract: A composition having a pH of less than 7 and including one or more surfactants, one or more chelating agents, and one or more acid in an aqueous solvents is used to treat stains on a textile caused by sunscreen lotion. Sunscreen stains in textiles can be reduced to a ?b* of 5 or less as compared to the textile before staining. The method includes preparing a use solution having a pH of less than 7 by applying to the wash solution a solid composition comprising about 15 to about 60 wt-% of surfactants; about 4 to about 18 wt-% chelating agents; and about 10 to about 40 wt-% of an acid or a salt thereof, and washing the textile in the wash solution, where the method is capable or reducing the stain in the textile to a ?b* of 7 or less as compared to the textile before staining.
    Type: Application
    Filed: January 12, 2016
    Publication date: August 4, 2016
    Inventors: Stephen B. Christensen, Jessica R. Bull, Kirsten M. Weeks, Dawn N. Lock, Joanna Ai Pham
  • Cleaning composition and method for removal of sunscreen stains
    Patent number: 9222058
    Abstract: The invention is directed to a cleaning composition and method for reducing yellow stains caused by sunscreen components such as avobenzone, oxybenzone, homosalate, octinoxate, octisalate, octocrylene or combinations thereof. The cleaning composition employs a synergistic combination of an amine oxide/solvent and a souring agent.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: December 29, 2015
    Assignee: ECOLAB USA INC.
    Inventors: Dawn N. Lock, Stephan M. Hubig, Kim R. Smith, Joshua A. Ackerman
  • CLEANING COMPOSITION AND METHOD FOR REMOVAL OF SUNSCREEN STAINS
    Publication number: 20140259440
    Abstract: The invention is directed to a cleaning composition and method for reducing yellow stains caused by sunscreen components such as avobenzone, oxybenzone, homosalate, octinoxate, octisalate, octocrylene or combinations thereof. The cleaning composition employs a synergistic combination of an amine oxide/solvent and a souring agent.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: ECOLAB USA INC.
    Inventors: Dawn N. Lock, Stephan M. Hubig, Kim R. Smith, Joshua A. Ackerman