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For the Inventor, By the Inventor

Karlstad, Sweden

Kvaerner Pulping Technologies Aktiebolag

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USPTO Granted Patents = 14

Trademarks = 1

Forward Citations = 76

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19 inventors (with patents filed for the assignee):

goldMedal Ulf Jansson (7 out of 27 patents)

silverMedal Rolf Ekholm (6 out of 29 patents)

bronzeMedal Ronny Hoglund (3 out of 12 patents)

4.  Lennart Gustavsson (1 out of 29 patents)

5.  Anders Bergqvist (1 out of 6 patents)

6.  Per Nystrom (1 out of 2 patents)

7.  Stig Andtbacka (1 out of 4 patents)

8.  Ole Richter (1 out of 4 patents)

9.  Lennart Bergkvist (1 out of 3 patents)

10.  Jan G Carlsson (1 out of 3 patents)

11.  Sten Gustafsson (1 out of 1 patent)

12.  Kjell Lindblom (1 out of 1 patent)

13.  Jan Anderson (1 out of 1 patent)

14.  Elisabeth Andtbacka (1 out of 1 patent)

15.  Finn Jacobsen (1 out of 1 patent)


14 patents:

1. 5876560 - Method and apparatus for removing gas from a fibre-liquid suspension (1999-03-02),
2. 5744005 - Self-supporting straining device for a continuous digester (1998-04-28),
3. 5736005 - Scraper device for a continuous digester (1998-04-07),
4. 5711852 - Method and device for mixing of a fluid into a pulp-suspension (1998-01-27),
5. 5681453 - Reciprocal movable screens in a vertically elongated vessel (1997-10-28),
6. 5672245 - Recycling of knots in a continuous process for cooking chemical pulp (1997-09-30),
7. D382881 - Pump impeller (1997-08-26),
8. 5655390 - Suspension-treating device (1997-08-12),
9. 5640994 - Liquid reservoir (1997-06-24),
10. 5615997 - Pump for pumping fibrous pulp suspension (1997-04-01),
11. 5556508 - Method for treating pulp (1996-09-17),
12. 5556200 - Apparatus for mixing a first fluid into a second fluid using a (1996-09-17),
13. 5480546 - Rotating screen drum with a stainless lining (1996-01-02),
14. 5461888 - Suspension-treating device (1995-10-31),
Company Overview
Kvaerner Pulping Technologies Aktiebolag, based in Karlstad, Sweden, specializes in the development and manufacturing of advanced technologies for the pulp and paper industry. The company focuses on innovative solutions that enhance the efficiency and sustainability of pulp production processes. With a strong emphasis on research and development, Kvaerner Pulping Technologies is dedicated to providing cutting-edge equipment and systems that meet the evolving needs of the global market, contributing to environmentally friendly practices in the industry.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 3 2026

14 Patents

#9 in Karlstad

#455 in Sweden

#42,333 in the World

Karlstad, SE
Karlstad, Sweden

Kvaerner Pulping Technologies Aktiebolag

Forward Citations = 76

19 inventors:

goldMedal Ulf Jansson (7 out of 27 patents)

silverMedal Rolf Ekholm (6 out of 29 patents)

bronzeMedal Ronny Hoglund (3 out of 12 patents)

4.  Lennart Gustavsson (1 out of 29 patents)

5.  Anders Bergqvist (1 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kvaerner Pulping Technologies Aktiebolag. Retrieved from https://idiyas.com/company/kvaerner-pulping-technologies-aktiebolag

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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