Patents by Inventor Per Simonsen

Per Simonsen 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).

  • Filter unit for filtering gas
    Patent number: 6676720
    Abstract: A filter unit (1) for filtering gas has a plurality of bag filters (10) hanging down from a suspension plate (7) dividing a housing into a lower gas inlet side (9) and an upper outlet side (8) for filtered gas. The individual bag filter (10) has an open end (11) at the suspension plate, a tubular wall (20) of a flexible filter material, and a lower end closure (23) of an impermeable material and provided with a drain (25). The end closures of the bag filters are interconnected.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: January 13, 2004
    Assignee: Niro A/S
    Inventor: Per Simonsen
  • Filter unit having a filter cleaning nozzle associated with the filter unit and including a guide body
    Patent number: 6332902
    Abstract: A filter unit for filtering gas has at least one filter element with an outlet opening. A filter cleaning nozzle is located in a clean-gas chamber at a distance from the outlet opening and is connected to a source of pressurized primary cleaning gas via a control valve. Primary cleaning gas is ejected from an annular slot and along the outer side of a guide body located in the clean-gas chamber. The guide body is open to the secondary gas in the chamber.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: December 25, 2001
    Assignee: Niro A/S
    Inventors: Per Simonsen, Ove Emil Hansen