Patents by Inventor Ingval Hageland

Ingval Hageland 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).

  • Nucleating device
    Patent number: 5139078
    Abstract: A nucleating agent for solutions comprises a metal bar, magnetic tape adhered to a surface area of the bar and particulate magnetite on the surface of the tape. The magnetic field created by the tape holds the bar, tape and magnetite in fixed relation to each other.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: August 18, 1992
    Assignee: Electric Power Research Institute
    Inventors: Douglas A. Ames, Ingval Hageland
  • Nucleating device for thermal energy storage compositions
    Patent number: 5082582
    Abstract: A nucleating agent for NaOH/H.sub.2 O solutions comprises a metal bar, magnetic tape adhered to a surface area of the bar and particulate magnetite on the surface of the tape. The magnetic field created by the tape holds the bar, tape and magnetite in fixed relation to each other.
    Type: Grant
    Filed: November 1, 1990
    Date of Patent: January 21, 1992
    Assignee: Electric Power Research Institute
    Inventors: Douglas A. Ames, Ingval Hageland