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For the Inventor, By the Inventor

Karlstad, Sweden

Kvaerner Pulping Aktiebolag

Calculating rank
USPTO Granted Patents = 8


Trademarks = 2

Forward Citations = 46

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24 inventors (with patents filed for the assignee):

goldMedal Ulf Jansson (1 out of 27 patents)

silverMedal Rolf Ekholm (1 out of 29 patents)

bronzeMedal Anders Bergqvist (1 out of 6 patents)

4.  Håkan Dahllöf (1 out of 1 patent)

5.  Marcelo Leite (1 out of 1 patent)

6.  Lars Stigsson (1 out of 10 patents)

7.  Åke Backlund (1 out of 1 patent)

8.  Soren Gustavsson (1 out of 3 patents)

9.  Petter Tibbling (1 out of 4 patents)

10.  Johanna Svanberg (1 out of 7 patents)

11.  Ake Backlund (1 out of 16 patents)

12.  Hans Olsson (1 out of 1 patent)

13.  Yrjo Schildt (1 out of 1 patent)

14.  Finn Oulie (1 out of 6 patents)

15.  Mikael Nilsson (1 out of 2 patents)


8 patents:

1. 6605181 - Peroxide bleach sequence including an acidic bleach stage and including a wash stage (2003-08-12),
2. 6336994 - Totally chlorine free bleaching process using recovered filtrate (2002-01-08),
3. 6096170 - Pressurized peroxide bleaching vessel having a rotatable scraper arm and (2000-08-01),
4. 5934318 - Valve system (1999-08-10),
5. 5688369 - Method and device for feeding out fibre pulp (1997-11-18),
6. 5605604 - Method of reducing the resin content in sulfite pulp (1997-02-25),
7. 5593544 - Pulp production (1997-01-14),
8. 5567280 - Digester for cooking pulp having staggered circular screens for (1996-10-22),
Company Overview
Kvaerner Pulping Aktiebolag is a leading provider of technologies, services and solutions for the pulp and paper industry. With a strong focus on innovation and sustainability, the company offers a range of products and services to help its clients improve efficiency, reduce costs and minimize environmental impact. Kvaerner Pulping Aktiebolag is committed to delivering high-quality solutions that meet the needs of its customers and contribute to a more sustainable future.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 10 2026

8 Patents

#11 in Karlstad

#721 in Sweden

Karlstad, SE
Karlstad, Sweden

Kvaerner Pulping Aktiebolag

Forward Citations = 46

24 inventors:

goldMedal Ulf Jansson (1 out of 27 patents)

silverMedal Rolf Ekholm (1 out of 29 patents)

bronzeMedal Anders Bergqvist (1 out of 6 patents)

4.  Håkan Dahllöf (1 out of 1 patent)

5.  Marcelo Leite (1 out of 1 patent)

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