Patents by Inventor David L. Crump

David L. Crump 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).

  • Patent number: 10745812
    Abstract: Methods, systems and apparatuses are disclosed for treating aluminum desmutting solutions by reacting, mixing and filtering an aluminum desmutting solution flow from an aluminum desmutting solution tank and controlling the amount of copper ions in an aluminum desmutting solution tank by directing a portion of the desmutting solution from a desmutting solution tank to a treatment line, reacting a portion of the desmutting solution in the treatment line and recirculating a filtered aluminum desmutting solution to the aluminum desmutting solution tank during active desmutting operation of the aluminum desmutting solution tank.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: August 18, 2020
    Assignee: The Boeing Company
    Inventors: David L. Crump, Lance E. Succo, David Huebner, Mark R. Woodruff
  • Publication number: 20190062928
    Abstract: Methods, systems and apparatuses for treating operating aluminum desmutting solutions by reacting, mixing and filtering a partial desmutting solution flow are disclosed.
    Type: Application
    Filed: August 24, 2017
    Publication date: February 28, 2019
    Inventors: David L. Crump, Lance E. Succo, David Huebner, Mark R. Woodruff
  • Patent number: 8083949
    Abstract: A system for selectively removing at least one undesirable ion from an acidic solution including a tank receiving the acidic solution, a chiller in fluid communication with the tank, the chiller being configured to reduce a temperature of the acidic solution, and an ion exchanger in fluid communication with the chiller, the ion exchanger including an ion exchange resin that is selective for the undesirable ion.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: December 27, 2011
    Assignee: The Boeing Company
    Inventors: David A. Huebner, David L. Crump
  • Publication number: 20100206814
    Abstract: A system for selectively removing at least one undesirable ion from an acidic solution including a tank receiving the acidic solution, a chiller in fluid communication with the tank, the chiller being configured to reduce a temperature of the acidic solution, and an ion exchanger in fluid communication with the chiller, the ion exchanger including an ion exchange resin that is selective for the undesirable ion.
    Type: Application
    Filed: February 17, 2009
    Publication date: August 19, 2010
    Applicant: THE BOEING COMPANY
    Inventors: David A. Huebner, David L. Crump
  • Patent number: 6149795
    Abstract: An improved method of anodizing an aluminum or aluminum alloy workpiece including the steps of: (a) providing an aqueous anodizing bath consisting essentially by weight of about 3 to 5 percent sulfuric acid, from about 0.5 to 1 percent boric acid, not more than about 5.0 g/L aluminum ion, not more than about 0.2 percent chloride ion, and a fungistat consisting of benzoic acid, a water-soluble salt of benzoic acid selected from the group consisting of sodium benzoate, potassium benzoate, or lithium benzoate, or mixtures thereof, the fungistat having a concentration in the range of about one part per million (1 ppm) to about ten thousand parts per million (10,000 ppm) by weight; (b) maintaining the bath at a temperature from about 70 to about 90 degrees F.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: November 21, 2000
    Assignee: The Boeing Company
    Inventors: John C. Oelund, Warren J. Fullen, David L. Crump