Patents by Inventor Laine STEWART

Laine STEWART 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 and compositions for cleaning aluminum cans
    Patent number: 11535818
    Abstract: A composition, kit and method useful in a multi-stage washing method for cleaning an aluminum or aluminum alloy containers while reducing hazardous exposure of workers to toxic levels of hydrogen fluoride or ammonium bifluoride employs a stable, neutralized ammonium bifluoride-containing accelerator solution for addition to an acidic wash solution.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: December 27, 2022
    Assignee: HOUGHTON TECHNICAL CORP.
    Inventors: Laine Stewart, Michael E. Smith, Kimberly A. Kontra, Richard Hills
  • METHOD AND COMPOSITIONS FOR CLEANING ALUMINUM CANS
    Publication number: 20220112448
    Abstract: A composition, kit and method useful in a multi-stage washing method for cleaning an aluminum or aluminum alloy containers while reducing hazardous exposure of workers to toxic levels of hydrogen fluoride or ammonium bifluoride employs a stable, neutralized ammonium bifluoride-containing accelerator solution for addition to an acidic wash solution.
    Type: Application
    Filed: December 20, 2021
    Publication date: April 14, 2022
    Inventors: Laine STEWART, Michael E. SMITH, Kimberly A. KONTRA, Richard HILLS
  • METHOD AND COMPOSITIONS FOR CLEANING ALUMINUM CANS
    Publication number: 20200385655
    Abstract: A composition, kit and method useful in a multi-stage washing method for cleaning an aluminum or aluminum alloy containers while reducing hazardous exposure of workers to toxic levels of hydrogen fluoride or ammonium bifluoride employs a stable, neutralized ammonium bifluoride-containing accelerator solution for addition to an acidic wash solution.
    Type: Application
    Filed: November 29, 2018
    Publication date: December 10, 2020
    Inventors: Laine STEWART, Michael E. SMITH, Kimberly A. KONTRA, Richard HILLS