Patents by Inventor Jesper Christopherson

Jesper Christopherson 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).

  • Sludge treatment
    Patent number: 7410568
    Abstract: An apparatus for treating sludge, comprises a press for dewatering the sludge, a compaction device for receiving and compacting sludge dewatered by the press, a shredder for receiving and shredding sludge compacted by the compaction device, and a tube conveyor for conveying shredded sludge from the shredder. The press is controlled to vary the flow rate of the sludge in response to at least one sensed operational parameter of the press, such as the momentary power for operating the press, pressure in the sludge in the press, sludge concentration in the press, sludge feed flow to the press or separated water flow from the press.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: August 12, 2008
    Assignee: Nordic Water Products AB
    Inventor: Jesper Christopherson
  • SLUDGE TREATMENT
    Publication number: 20080099384
    Abstract: An apparatus for treating sludge, comprises a press for dewatering the sludge, a compaction device for receiving and compacting sludge dewatered by the press, a shredder for receiving and shredding sludge compacted by the compaction device, and a tube conveyor for conveying shredded sludge from the shredder. The press is controlled to vary the flow rate of the sludge in response to at least one sensed operational parameter of the press, such as the momentary power for operating the press, pressure in the sludge in the press, sludge concentration in the press, sludge feed flow to the press or separated water flow from the press.
    Type: Application
    Filed: January 4, 2008
    Publication date: May 1, 2008
    Applicant: NORDIC WATER PRODUCTS AB
    Inventor: Jesper Christopherson
  • Sludge treatment
    Publication number: 20050092694
    Abstract: An apparatus for treating sludge, comprises a press for dewatering the sludge, a compaction device for receiving and compacting sludge dewatered by the press, a shredder for receiving and shredding sludge compacted by the compaction device, and a tube conveyor for conveying shredded sludge from the shredder. The press is controlled to vary the flow rate of the sludge in response to at least one sensed operational parameter of the press, such as the momentary power for operating the press, pressure in the sludge in the press, sludge concentration in the press, sludge feed flow to the press or separated water flow from the press.
    Type: Application
    Filed: October 13, 2004
    Publication date: May 5, 2005
    Inventor: Jesper Christopherson