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Karhula, Finland

A. Ahlstrom Osakeyhtio

USPTO Granted Patents = 77

Trademarks = 1

Forward Citations = 956

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70 inventors (with patents filed for the assignee):

Timo Sarpaneva (10 out of 10 patents)

Frey Viking Sundman (7 out of 8 patents)

Jorma A Tuomaala (5 out of 7 patents)

4. Toivo J Niskanen (4 out of 23 patents)

5. Folke Engstrom (3 out of 31 patents)

6. Tapio Waris (3 out of 3 patents)

7. Jorma H Vennola (3 out of 3 patents)

8. Seppo Kalervo Ruottu (2 out of 19 patents)

9. Kaj Henricson (2 out of 63 patents)

10. Jorma J Nieminen (2 out of 13 patents)

11. Jorma Aarne Tuomaala (2 out of 2 patents)

12. Heikki Merilainen (2 out of 2 patents)

13. Sakari Heikkila (2 out of 2 patents)

14. Veli T Wirkkala (2 out of 2 patents)

15. Tapani Nyman (1 out of 5 patents)

Core Competencies:

Fluidized Bed Reactor

Centrifugal Pump

Fiber Stock Washing

Web Forming

Flaw Detection System

Timber Sawing

Pulp Production

Fibrous Material Treatment

Thermal Stabilization

Packaging Paper Rolls

Gas Separation

Adjustable Injection Device

77 patents: Sort by Forward Citations

1. 5141720 - Catalyst bed for exothermal reactions between gases and/or other fluids (1992-08-25),

2. 4874584 - Fluidized bed reactor (1989-10-17),

3. 4867948 - Fluidized bed reactor (1989-09-19),

4. 4687146 - Apparatus for fiberizing and screening of fibrous materials (1987-08-18),

5. 4619736 - Apparatus for defiberizing, screening and pumping cellulose pulp or (1986-10-28),

6. 4607212 - Method and apparatus for detection of knots or the like in sawn lumber (1986-08-19),

7. 4594052 - Centrifugal pump for liquids containing solid material (1986-06-10),

8. 4558477 - Process for washing fibre stock (1985-12-17),

9. 4557802 - Apparatus for affecting a web drained on a wire (1985-12-10),

10. 4557120 - Apparatus for washing fibre stock (1985-12-10),

11. D281432 - Chipping blade (1985-11-19),

12. 4554052 - Method and apparatus for web forming (1985-11-19),

13. 4552619 - Thermal stabilizing system for a headbox of a papermachine (1985-11-12),

14. 4534151 - Method and apparatus for packaging paper rolls (1985-08-13),

15. 4533433 - Method of covering the chemical losses in pulp production (1985-08-06),

A. Ahlstrom Osakeyhtio is a global high-performance fiber-based materials company. They provide innovative and sustainable solutions for businesses worldwide. With a wide range of products such as filter materials, release liners, decor papers, and more, Ahlstrom serves multiple industries including transportation, food packaging, medical, and construction. They are dedicated to providing value-added solutions that enhance their customers' performance and contribute to a more sustainable future.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

77 Patents

#1 in Karhula

#47 in Finland

#9,375 in the World

Karhula, Finland

A. Ahlstrom Osakeyhtio

Forward Citations = 956

70 inventors:

Timo Sarpaneva (10 out of 10 patents)

Frey Viking Sundman (7 out of 8 patents)

Jorma A Tuomaala (5 out of 7 patents)

4. Toivo J Niskanen (4 out of 23 patents)

5. Folke Engstrom (3 out of 31 patents)

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