Patents by Inventor Anders Wernqvist

Anders Wernqvist 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).

  • Evaporation apparatus for evaporation of liquids
    Patent number: 6210455
    Abstract: An evaporation apparatus for evaporation of, for example, spent liquor from pulp cooking. The apparatus has a vertical cylinder that has evaporation surfaces disposed therein. An outlet opening is defined in a widened part of the cylinder to receive driven-off steam. A skirt is disposed in the cylinder and surrounds the evaporated liquid and driven-off steam and has a diameter that is smaller than a diameter of the widened part. The skirt has an open bottom and a skirt opening is defined in a portion of the skirt that is facing away from the outlet opening.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: April 3, 2001
    Assignee: Kvaerner Pulping AB
    Inventors: Lars Olausson, Michael Thiede, Olle Wennberg, Anders Wernqvist, Martin Collander
  • Process for treatment of a contaminated liquid
    Patent number: 5989394
    Abstract: A process for purification treatment of an impure liquid, such as a contaminated condensate, obtained when producing paper or paper pulp. The liquid is introduced intro a stripper device at an admission point (C) and the stripper device is also supplied with an acidifier preferably at a point (D) that is located above the admission point (C) and malodorous gases are driven off from the stripper device.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: November 23, 1999
    Assignee: Kvaerner Pulping AB
    Inventors: Mikael Johansson, Krister Strom, Anders Wernqvist