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Helsinki, Finland

Andritz-ahlstrom Oy

USPTO Granted Patents = 18

Forward Citations = 82

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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 71 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),

Andritz-ahlstrom Oy is a global leader in the supply of innovative technologies and services for industries such as pulp and paper, hydropower, and other specialized industries. The company offers a wide range of products and solutions for various industrial processes, including pumps, mixers, and filtration systems. With a strong focus on sustainability and efficiency, Andritz-ahlstrom Oy strives to help its customers improve their operations and reduce environmental impact.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

18 Patents

#52 in Helsinki

#182 in Finland

#33,147 in the World

Helsinki, Finland

Andritz-ahlstrom Oy

Forward Citations = 82

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)

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