Nordkalk Oy Ab

Calculating rank

USPTO Granted Patents = 4

% Expired Patents = 100.0

EPO Patents = 4

Forward Citations = 5

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4 inventors (with patents filed for the assignee):

Sakari Saastamoinen (3 out of 4 patents)

Pentti Virtanen (3 out of 8 patents)

Teemu Gronblom (1 out of 1 patent)

4. Lars Gronroos (1 out of 1 patent)

5. Juhani Mäki (2 patents)

6. Lars Grönroos (3 patents)

7. Artem Vochev (0 patent)

8. Juuso Hakala (0 patent)

9. Teemu Grönblom (0 patent)

10. Mathias SNÅRE (0 patent)

4 patents: Sort by Forward Citations

1. 9045861 - Manufacture and use of a composite structure containing precipitated carbonate (2015-06-02),

2. 8906201 - Use of acidic water in the manufacture of paper (2014-12-09),

3. 8758566 - Process for manufacturing paper or board (2014-06-24),

4. 8354003 - Reinforced porous fibre product (2013-01-15),

Company Overview

Nordkalk Oy Ab is a leading producer of limestone-based products for industrial and environmental applications. With over 120 years of experience, the company operates in multiple countries and serves a wide range of industries including construction, agriculture, and water treatment. Nordkalk is committed to sustainability and responsible mining practices, delivering high-quality solutions to customers worldwide.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

4 Patents

#3 in Pargas

#646 in Finland

Pargas, Finland

Nordkalk Oy Ab

Forward Citations = 5

4 inventors:

Sakari Saastamoinen (3 out of 4 patents)

Pentti Virtanen (3 out of 8 patents)

Teemu Gronblom (1 out of 1 patent)

4. Lars Gronroos (1 out of 1 patent)

5. Juhani Mäki (2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nordkalk Oy Ab. Retrieved from https://idiyas.com/company/nordkalk-oy-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]

4 patents (EPO):

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]