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Karlstad, Sweden

Kvaerner Pulping Ab

USPTO Granted Patents = 109

% Expired Patents = 14.7

CIPO Patents = 1

Trademarks = 1

Forward Citations = 464

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103 inventors (with patents filed for the assignee):

Vidar Martin Snekkenes (22 out of 54 patents)

Rolf Ekholm (13 out of 29 patents)

Lennart Gustavsson (11 out of 29 patents)

4. Ulf Jansson (8 out of 27 patents)

5. Johan Engstrom (7 out of 7 patents)

6. Bengt H Nilsson (7 out of 25 patents)

7. Stefan Hansson (6 out of 6 patents)

8. Krister Olsson (5 out of 12 patents)

9. Bo Clarstrom (5 out of 7 patents)

10. Martin Ragnar (5 out of 5 patents)

11. Lars Gunnar Olausson (5 out of 10 patents)

12. Kent Strid (5 out of 14 patents)

13. Christofer Lindgren (4 out of 8 patents)

14. Mikael H Lindstrom (4 out of 20 patents)

15. Axel Lamas (4 out of 5 patents)

Core Competencies:

Continuous Cooking

Oxygen Delignification

Cellulose Fibres

Pulp Suspension

Washing Apparatus

Fluid Mixing

Chemical Recovery

Black Liquor

Dewatering

Heat Economy

Pulp Digestion

Pulp Treatment

109 patents: Sort by Forward Citations

1. 7217338 - Process for continuously cooking chemical cellulose pulp (2007-05-15),

2. 7214291 - Method for the modification of cellulose fibres (2007-05-08),

3. 7179437 - Feeding device and process and feeding system which utilize the feeding device (2007-02-20),

4. 7156952 - Method and arrangement for oxygen delignification of cellulose pulp (2007-01-02),

5. 7147230 - Sealing device and sleeve and holding element for such (2006-12-12),

6. 7112256 - Method for continuous cooking of chemical pulp to improve heat economy (2006-09-26),

7. 7077931 - Method and bleaching line with a main conduit for wash liquor (2006-07-18),

8. 6966970 - Method for supplying washing liquid to a process for cooking cellulose pulp (2005-11-22),

9. 6946072 - Method and apparatus for washing a fibre suspension (2005-09-20),

10. 6946056 - Method for regulating the manufacturing of pulp by optically measuring the amount of hexenuronic acid (2005-09-20),

11. 6887345 - Process and device for evaporating liquids, for example black liquor from cellulose cooking, which contain solid and dissolved substances (2005-05-03),

12. 6843885 - Method for controlling the cooking temperature in a continuous vapour phase digester (2005-01-18),

13. 6841036 - Process for the oxygen delignification of pulp in two stages with higher pressure in the second stage (2005-01-11),

14. 6808596 - System for the oxygen delignification of pulp consisting of lignocellulose-containing material (2004-10-26),

15. 6793809 - Pipe system for receiving and transporting lime sludge from a white liquor filter (2004-09-21),

Kvaerner Pulping AB, based in Karlstad, Sweden, specializes in advanced cellulose pulping technologies. The company focuses on developing innovative solutions for continuous cooking and oxygen delignification processes, enhancing the efficiency and sustainability of pulp production. Their expertise encompasses various core technology topics, including the handling of pulp suspension, washing apparatus, fluid mixing, and chemical recovery systems. Kvaerner Pulping is committed to supporting the pulp and paper industry with cutting-edge technologies that optimize resource use and minimize environmental impact.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

109 Patents

#1 in Karlstad

#71 in Sweden

#7,213 in the World

Karlstad, Sweden

Kvaerner Pulping Ab

Forward Citations = 464

103 inventors:

Vidar Martin Snekkenes (22 out of 54 patents)

Rolf Ekholm (13 out of 29 patents)

Lennart Gustavsson (11 out of 29 patents)

4. Ulf Jansson (8 out of 27 patents)

5. Johan Engstrom (7 out of 7 patents)

Please report any incorrect information to [email protected]

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