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Eka Chemicals Ab

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USPTO Granted Patents = 35

% Expired Patents = 2.9

EPO Patents = 23

Trademarks = 12

Forward Citations = 245

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55 inventors (with patents filed for the assignee):

Hans Olof Lagnemo (6 out of 19 patents)

Monica Jigstam (6 out of 6 patents)

Hans E Johansson (5 out of 17 patents)

4. Michael Persson (3 out of 17 patents)

5. Raphaël Duval (3 out of 5 patents)

6. Erik Lindgren (3 out of 24 patents)

7. Kjell Rune Andersson (2 out of 6 patents)

8. Sven-Eric Lunner (2 out of 6 patents)

9. Hubert Leveque (2 out of 5 patents)

10. Johan Landfors (2 out of 11 patents)

11. Maria Norell (2 out of 6 patents)

12. Ingemar Thebrin (2 out of 3 patents)

13. Anders Waleij (2 out of 2 patents)

14. Troy Berglind (2 out of 3 patents)

15. Charlotte Angel (2 out of 2 patents)

Core Competencies:

Filler

Cross-Linked Polymers

Bleaching Agent

Absorbent Material

Paper Production

Surface Sizing

Chemical Composition

Electrodialysis Treatment

Hydrogen Peroxide

Starch Modification

Zeolite Dispersion

Water Treatment

35 patents: Sort by Forward Citations

1. 9156990 - Filler for papermaking process (2015-10-13),

2. 7825240 - Cross-linked polymers based on bis-silane, bis-thioether, bis-sulphoxide, bis-sulphone and butane-di-yl derivatives of polysaccharides and oligosaccharides, and their shaping as support materials (2010-11-02),

3. 7576034 - Crosslinked three-dimensional polymer network, method for preparing same, support material comprising same and uses thereof (2009-08-18),

4. 7067640 - Cross-linked chiral compounds and methods of making thereof (2006-06-27),

5. 6255272 - Bleaching agent (2001-07-03),

6. 6174383 - Method at treatment of metals (2001-01-16),

7. 6113741 - Process for the production of paper (2000-09-05),

8. 6103064 - Process for the production of paper (2000-08-15),

9. 6100322 - Process for the production of paper (2000-08-08),

10. 6087457 - Surface sizing of cellulose based products (2000-07-11),

11. 6083347 - Absorbent material and production thereof (2000-07-04),

12. 6071431 - Bleaching agent (2000-06-06),

13. 5985235 - Method of treating a catalyst (1999-11-16),

14. 5961948 - Method of producing hydrogen peroxide (1999-10-05),

15. 5961803 - Leaching process (1999-10-05),

Company Overview

Eka Chemicals AB, headquartered in Bohus, Sweden, specializes in the development and manufacturing of innovative chemical solutions for various industries, including pulp and paper, water treatment, and personal care. The company focuses on enhancing product performance and sustainability through advanced research and technology. Eka is committed to providing tailored solutions that meet the evolving needs of its global clientele, leveraging its expertise in specialty chemicals to drive efficiency and environmental responsibility.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

35 Patents

#1 in Bohus

#196 in Sweden

#19,187 in the World

Eka Chemicals Ab

Forward Citations = 245

55 inventors:

Hans Olof Lagnemo (6 out of 19 patents)

Monica Jigstam (6 out of 6 patents)

Hans E Johansson (5 out of 17 patents)

4. Michael Persson (3 out of 17 patents)

5. Raphaël Duval (3 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Eka Chemicals Ab. Retrieved from https://idiyas.com/company/eka-chemicals-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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