For the Inventor, By the Inventor

Enter assignee name

Helsinki, Finland

Ahlstrom Machinery Oy

Calculating rank

USPTO Granted Patents = 30

Forward Citations = 180

Loading Chart...

Loading Chart...

55 inventors (with patents filed for the assignee):

Holger Engdahl (3 out of 10 patents)

Ari Pelkio (3 out of 3 patents)

Pekka Tormikoski (3 out of 3 patents)

4. Raimo Paju (2 out of 4 patents)

5. Erkki J Kiiskila (2 out of 15 patents)

6. Erik Agren (2 out of 3 patents)

7. Pentti Vikio (2 out of 2 patents)

8. Jorma Simonen (1 out of 9 patents)

9. Jukka Savolainen (1 out of 2 patents)

10. Mikko Hupa (1 out of 5 patents)

11. Harri Qvintus (1 out of 5 patents)

12. Arto Koso (1 out of 5 patents)

13. Joseph R Phillips (1 out of 39 patents)

14. Pekka Tervola (1 out of 4 patents)

15. Arto Ahvenainen (1 out of 3 patents)

Core Competencies:

Deaeration Vessel

Black Liquor Evaporators

Pulp Treatment

Lime Sludge

Recovery Boiler

Filtration Apparatus

Batch Cooking Process

Economizer System

Green Liquor

Disc Filter

Energy Recovery

Falling Film

30 patents: Sort by Forward Citations

1. 6096120 - Deaeration vessel (2000-08-01),

2. 6090240 - Method of inhibiting scaling in black liquor evaporators (2000-07-18),

3. 6086713 - Method of treating pulp (2000-07-11),

4. 6074521 - Method of separating impurities from lime and lime sludge (2000-06-13),

5. 6030494 - Method of treating melodorous gases of a pulp mill (2000-02-29),

6. 6024028 - Protection of the air ports of a recovery boiler (2000-02-15),

7. 5996806 - Method and apparatus for treating filler-containing material such as (1999-12-07),

8. 5989018 - Lime sludge feed arrangement (1999-11-23),

9. 5976319 - Disrupting the flow from the smelt spout of a recovery boiler (1999-11-02),

10. 5960962 - Screen (1999-10-05),

11. 5897788 - Method and apparatus for cleaning a filter drum used for thickening lime (1999-04-27),

12. 5879511 - Recovery boiler operation with black liquor feed in separate liquid (1999-03-09),

13. 5837096 - Falling film evaporator (1998-11-17),

14. 5800674 - Method and apparatus for improving a batch cooking process (1998-09-01),

15. 5788813 - Clarifying and/or filtering of green liquor and an apparatus therefore (1998-08-04),

Company Overview

Ahlstrom Machinery Oy, based in Helsinki, specializes in the design and manufacture of advanced machinery for the paper and packaging industries. The company focuses on developing innovative solutions that enhance production efficiency and product quality. With a strong emphasis on research and technology, Ahlstrom Machinery is committed to delivering cutting-edge equipment that meets the evolving needs of its global clientele, ensuring sustainability and performance in manufacturing processes.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

30 Patents

#43 in Helsinki

#121 in Finland

#21,924 in the World

Helsinki, Finland

Ahlstrom Machinery Oy

Forward Citations = 180

55 inventors:

Holger Engdahl (3 out of 10 patents)

Ari Pelkio (3 out of 3 patents)

Pekka Tormikoski (3 out of 3 patents)

4. Raimo Paju (2 out of 4 patents)

5. Erkki J Kiiskila (2 out of 15 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ahlstrom Machinery Oy. Retrieved from https://idiyas.com/company/ahlstrom-machinery-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]

Loading…