Patents by Inventor Bjarki Hallgrinsson

Bjarki Hallgrinsson 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).

  • Dual filter wet/dry hand-held vacuum cleaner
    Patent number: 6434785
    Abstract: A dual filter wet/dry hand-held vacuum cleaner includes a two-stage filtration system effective to provide liquid and/or dry pick-up while minimizing the frequency with which it needs cleaned out that, at cleanup time, may be cleaned efficiently with little or no dust generation and minimal or no direct contact with accumulated grime.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: August 20, 2002
    Assignee: Headwaters Research & Development, Inc
    Inventors: Rudy A. Vandenbelt, Bjarki Hallgrinsson