Patents by Inventor John E. Waller

John E. Waller 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).

  • Rust removal and composition thereof
    Patent number: 4810405
    Abstract: Iron oxide deposits are removed from substrates by use of aqueous solution at approximately neutral pH containing a phosphonate (e.g., hydroxyethylidene diphosphonic acid), a reducing agent (e.g., sodium sulfite), and a corrosion inhibitor (e.g., benzotriazole). Optionally, a surfactant and dispersant may be included.
    Type: Grant
    Filed: October 21, 1987
    Date of Patent: March 7, 1989
    Assignee: Dearborn Chemical Company, Limited
    Inventors: John E. Waller, John A. Gray, David A. Aston
  • Method for flocculating and removing solids suspended in water
    Patent number: 4781839
    Abstract: Methods are described for flocculating and removing solids suspended in water using an inorganic component containing iron, aluminum, or a mixture thereof in combination with a tannin-based flocculant produced by reacting a condensed tannin with an amino compound and an aldehyde. The tannin-based flocculant is preferably the product of a controlled reaction in which the viscosity is monitored as an indication of suitable shelf life.
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: November 1, 1988
    Assignee: Dearborn Chemical Company, Limited
    Inventors: David W. Kelly, Stewart N. Paul, John E. Waller
  • Composition and method for flocculating and removing solids suspended in water
    Patent number: 4734216
    Abstract: A composition and method are described for flocculating and removing solids suspended in water using an inorganic component containing iron, aluminum, or a mixture thereof in combination with a tannin-based flocculant produced by reacting a condensed tannin with an amino compound and an aldehyde. The tannin-based flocculant is preferably the product of a controlled reaction in which the viscosity is monitored as an indication of suitable shelf life.
    Type: Grant
    Filed: August 19, 1986
    Date of Patent: March 29, 1988
    Assignee: Dearborn Chemical Company, Limited
    Inventors: David W. Kelly, Stewart N. Paul, John E. Waller
  • Composition and method for deoxygenation
    Patent number: 4626411
    Abstract: A composition containing a hydroxylamine compound; a quinone, a dihydroxybenzene, a diaminobenzene, or an aminohydroxybenzene compound; and a neutralizing amine is an excellent oxygen scavenger and corrosion inhibitor in boiler water and other aqueous systems.
    Type: Grant
    Filed: April 17, 1985
    Date of Patent: December 2, 1986
    Assignee: Dearborn Chemical Company, Limited
    Inventors: John J. Nemes, Harvey W. Thompson, John E. Waller