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Helsinki, Finland

Enso-Gutzeit Oy

USPTO Granted Patents = 32

Forward Citations = 237

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44 inventors (with patents filed for the assignee):

Pertti Puumalainen (4 out of 7 patents)

Holger Engdahl (3 out of 10 patents)

Pentti Vikio (3 out of 5 patents)

4. Antti Kuhasalo (3 out of 3 patents)

5. Seppo Kokkonen (3 out of 3 patents)

6. Tapani Penttinen (2 out of 30 patents)

7. Matti Salste (2 out of 5 patents)

8. Hannu Kurittu (2 out of 2 patents)

9. Riitta Koskiniemi (2 out of 3 patents)

10. Juhani Kyytsonen (2 out of 4 patents)

11. Rauno Rantanen (2 out of 4 patents)

12. Pertti Sikanen (2 out of 2 patents)

13. Harri Qvintus (2 out of 4 patents)

14. Juha S Titoff (2 out of 5 patents)

15. Tauno Turunen (2 out of 2 patents)

Core Competencies:

Sodium Hydroxide Separation

Filter Cigarette Production

Pulp Treatment

Cellulose Washing

Causticizing Process

Hydrocyclone Design

Drum Press

Effluent Purification

Electron Curtain

Lime Sludge Filtering

Silicon Coating Measurement

Multi-layer Products

32 patents: Sort by Forward Citations

1. 5843316 - Method of separating sodium hydroxide from white liquor or polysulfide (1998-12-01),

2. 5840385 - Cover for product package and method for producing same (1998-11-24),

3. 5738933 - Mutli-layer product (1998-04-14),

4. 5595196 - Method of producing a filter cigarette with tipping paper having lip (1997-01-21),

5. 5510035 - Method of separating sodium hydroxide from white liquor (1996-04-23),

6. 5022962 - Method for the treatment of spent liquors in pulp production (1991-06-11),

7. 4980023 - Method for manufacturing paper or cardboard and product containing (1990-12-25),

8. 4795170 - Packing arrangement for sealing the surface of a rotary drum like object (1989-01-03),

9. 4769986 - Apparatus for washing cellulose with a rotary drum (1988-09-13),

10. 4762590 - Causticizing process (1988-08-09),

11. 4687583 - Procedure for filtering lime sludge meant to be regenerated to lime (1987-08-18),

12. 4683816 - Drum press (1987-08-04),

13. 4681935 - Procedure for recovering soluble carbohydrates contained in wood (1987-07-21),

14. 4671878 - Means for clearing the blocked reject end of a vortex purifier (1987-06-09),

15. 4657678 - Twin hydrocyclone (1987-04-14),

Company Overview

Enso-Gutzeit Oy is a Finnish company based in Helsinki, specializing in the development and manufacturing of high-quality wood-based products. The organization focuses on sustainable solutions in the forestry sector, emphasizing innovation in wood processing and product design. With a commitment to environmental responsibility, Enso-Gutzeit engages in various research initiatives aimed at enhancing the efficiency and sustainability of wood utilization, contributing to both local and global markets.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

32 Patents

#39 in Helsinki

#115 in Finland

#20,697 in the World

Helsinki, Finland

Enso-Gutzeit Oy

Forward Citations = 237

44 inventors:

Pertti Puumalainen (4 out of 7 patents)

Holger Engdahl (3 out of 10 patents)

Pentti Vikio (3 out of 5 patents)

4. Antti Kuhasalo (3 out of 3 patents)

5. Seppo Kokkonen (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Enso-Gutzeit Oy. Retrieved from https://idiyas.com/company/enso-gutzeit-oy

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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