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Karlstad, Sweden

Kamyr Ab

USPTO Granted Patents = 66

Forward Citations = 707

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38 inventors (with patents filed for the assignee):

Finn Jacobsen (11 out of 15 patents)

Ole J Richter (9 out of 20 patents)

Johan C Richter (8 out of 29 patents)

4. Johan E Gullichsen (7 out of 20 patents)

5. Ake Backlund (6 out of 16 patents)

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

7. Bjorn Ahs (5 out of 5 patents)

8. Ronny Hoglund (5 out of 12 patents)

9. Ulf Jansson (4 out of 27 patents)

10. Rolf Ekholm (3 out of 29 patents)

11. Rune Hillstrom (3 out of 4 patents)

12. Claes G Lysen (2 out of 2 patents)

13. Goran Tistad (2 out of 2 patents)

14. Goran Brottgangrdh (2 out of 2 patents)

15. Toivo J Niskanen (2 out of 23 patents)

Core Competencies:

Continuous Digestion

Foam Formation

Energy Consumption

Refining Methods

Pulp Treatment

Screening Apparatus

Diffuser Technology

Fluidizing Pumps

Pressure Control

Mechanical Pulp

Chemical Treatment

Suspension Processing

66 patents: Sort by Forward Citations

1. 5879422 - Separating arrangement and method for counteracting foam formation (1999-03-09),

2. 5669948 - Separating arrangement and method for counteracting foam formation (1997-09-23),

3. 5300195 - Continuous vertical digester apparatus (1994-04-05),

4. 5236553 - Continuous cooking with reduced horsepower and pulp degradation (1993-08-17),

5. 5217575 - Process for oxygen bleaching using two vertical reactors (1993-06-08),

6. 5209641 - Apparatus for fluidizing, degassing and pumping a suspension of fibrous (1993-05-11),

7. 5192396 - Process for the continuous digestion of cellulosic fiber material (1993-03-09),

8. 5152871 - Method for decreasing energy consumption during refining of fiber (1992-10-06),

9. 5085735 - Method of refining cellulosic fibrous material with successive (1992-02-04),

10. 5080755 - Process for the continuous digestion of cellulosic fiber material (1992-01-14),

11. 5069752 - Digester screen switching (1991-12-03),

12. 5053108 - High sulfidity cook for paper pulp using black liquor sulfonization of (1991-10-01),

13. 5051167 - Apparatus for screening a suspension of fibrous cellulose material (1991-09-24),

14. 5047118 - Method for decreasing energy consumption during refining of fiber (1991-09-10),

15. 5044179 - Stabilizing pressure and flow conditions in a screening apparatus (1991-09-03),

Company Overview

Kamyr Ab, located in Karlstad, Sweden, specializes in advanced technologies for cellulosic fiber processing. The company is renowned for its innovative solutions in continuous digestion and pulp treatment, focusing on enhancing energy efficiency and refining methods. Kamyr's expertise extends to foam formation, screening apparatus, and diffuser technology, which are integral to optimizing the production of high-quality cellulose fibers. Their commitment to research and development positions them as a leader in sustainable processing solutions within the industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

66 Patents

#2 in Karlstad

#110 in Sweden

#11,177 in the World

Karlstad, Sweden

Kamyr Ab

Forward Citations = 707

38 inventors:

Finn Jacobsen (11 out of 15 patents)

Ole J Richter (9 out of 20 patents)

Johan C Richter (8 out of 29 patents)

4. Johan E Gullichsen (7 out of 20 patents)

5. Ake Backlund (6 out of 16 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kamyr Ab. Retrieved from https://idiyas.com/company/kamyr-ab

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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