For the Inventor, By the Inventor

Enter assignee name

Helsinki, Finland

Andritz-Ahlstrom Oy

Calculating rank

USPTO Granted Patents = 18

Forward Citations = 83

Loading Chart...

Loading Chart...

31 inventors (with patents filed for the assignee):

Kaj Henricson (6 out of 63 patents)

Olavi E Pikka (3 out of 27 patents)

Harri Qvintus (2 out of 5 patents)

4. Hannu Olavi Ramark (2 out of 5 patents)

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

6. Risto A Ljokkoi (2 out of 14 patents)

7. Theodora Retsina (1 out of 72 patents)

8. Jouni Matula (1 out of 30 patents)

9. Kari Peltonen (1 out of 15 patents)

10. Reijo Vesala (1 out of 27 patents)

11. Kari Saviharju (1 out of 13 patents)

12. Heikki Jaakkola (1 out of 2 patents)

13. Sami Siik (1 out of 5 patents)

14. Antero Laine (1 out of 5 patents)

15. Esa Vakkilainen (1 out of 4 patents)

18 patents: Sort by Forward Citations

1. 7229527 - Method for the controlled thickening of low consistency fiber suspensions (2007-06-12),

2. 6418637 - Method of sealing a rotary drum connection (2002-07-16),

3. 6383342 - Cluster rule compliance with reduced steam consumption (2002-05-07),

4. 6375797 - Bleaching chemical pulp in a PkDQ-Po Sequence (2002-04-23),

5. 6358363 - Method and apparatus for bleaching pulp using two fluidizing mixers (2002-03-19),

6. 6354514 - Method and apparatus for treating material having poor thermal conductivity (2002-03-12),

7. 6350348 - Batch cooking with black liquor pretreatment (2002-02-26),

8. 6340805 - Method of manufacturing a wire screen product (2002-01-22),

9. 6306253 - Acid treatment of pulp at high temperature prior to chlorine dioxide bleaching (2001-10-23),

10. 6235151 - Inhibiting scaling in alkaline waste liquor evaporators (2001-05-22),

11. 6217711 - Method of treating condensates (2001-04-17),

12. 6193406 - Method and apparatus for mixing pulp a suspension with a fluid medium with a freely rotatable mixing rotor (2001-02-27),

13. 6165316 - Method and plant for separating soap from black liquor using a pressure (2000-12-26),

14. 6159564 - Core and a method of manufacturing such (2000-12-12),

15. 6159338 - Supply of washing liquid in a fractionating multi-stage washer (2000-12-12),

Company Overview

Andritz-Ahlstrom Oy, based in Helsinki, specializes in advanced filtration solutions and technologies for various industries, including pulp and paper, water treatment, and food processing. The company focuses on developing innovative products that enhance efficiency and sustainability in filtration processes. With a strong emphasis on research and development, Andritz-Ahlstrom Oy aims to address the evolving needs of its global clientele, leveraging cutting-edge technology to deliver high-performance solutions tailored to specific applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

18 Patents

#64 in Helsinki

#189 in Finland

#34,263 in the World

Helsinki, Finland

Andritz-Ahlstrom Oy

Forward Citations = 83

31 inventors:

Kaj Henricson (6 out of 63 patents)

Olavi E Pikka (3 out of 27 patents)

Harri Qvintus (2 out of 5 patents)

4. Hannu Olavi Ramark (2 out of 5 patents)

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

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Andritz-Ahlstrom Oy. Retrieved from https://idiyas.com/company/andritz-ahlstrom-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…