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A. Ahlstrom Corporation

USPTO Granted Patents = 230

CIPO Patents = 10

Trademarks = 1

Forward Citations = 2,173

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196 inventors (with patents filed for the assignee):

Folke Engstrom (26 out of 31 patents)

Kaj Henricson (25 out of 63 patents)

Juhani M Isaksson (15 out of 22 patents)

4. Toivo J Niskanen (14 out of 23 patents)

5. Reijo Vesala (13 out of 27 patents)

6. Vesa J Vikman (13 out of 23 patents)

7. Timo Hyppanen (12 out of 24 patents)

8. Olavi E Pikka (12 out of 27 patents)

9. Reijo J Kuivalainen (10 out of 12 patents)

10. Jukka Timperi (9 out of 10 patents)

11. Pentti A Vikio (9 out of 9 patents)

12. Matti A Hiltunen (9 out of 14 patents)

13. Erkki J Kiiskila (8 out of 15 patents)

14. Frey A Frejborg (8 out of 8 patents)

15. Rolf E Malmstrom (7 out of 10 patents)

Core Competencies:

Centrifugal Pump

Fluidized Bed Reactor

Gas Separation Control

Ozone Bleaching Process

Fiber Suspension Treatment

Waste Gas Purification

High Temperature Gas Cleaning

Chemical Recovery

Zero Discharge Mill

Nitrogen Oxide Removal

Gas Filtering Apparatus

Pulp Processing

230 patents: Sort by Forward Citations

1. 5900158 - Method and apparatus for thickening lime mud with a disc filter (1999-05-04),

2. 5851350 - Method and apparatus for pumping cellulose pulp (1998-12-22),

3. 5842833 - Gas separation control in a centrifugal pump vacuum pump (1998-12-01),

4. 5791778 - Method and apparatus for mixing gaseous chemical to fiber suspension (1998-08-11),

5. 5759495 - Method and apparatus for treating hot gases (1998-06-02),

6. 5711789 - Apparatus for pumping gas-containing fiber suspensions (1998-01-27),

7. 5699746 - Method and apparatus for feeding air into a furnace (1997-12-23),

8. 5621934 - Mattress (1997-04-22),

9. 5607545 - Ozone bleaching process utilizing a fluidizing mixer and (1997-03-04),

10. 5585071 - Method and apparatus for treating hot gases (1996-12-17),

11. 5575395 - Method and apparatus for screening fibrous suspensions (1996-11-19),

12. 5571384 - Method and arrangement for the treatment of a fiber suspension (1996-11-05),

13. 5562884 - Reducing N.sub.2 O emissions when burning nitrogen-containing fuels in (1996-10-08),

14. 5549788 - Minimal effluents discharge pulp mill with chemical recovery (1996-08-27),

15. 5547083 - Apparatus for treating fiber suspension (1996-08-20),

Ahlstrom-Munksjö is a global company that provides sustainable and innovative fiber-based solutions. With over 8,000 employees and operations in more than 30 countries, we serve customers in various industries, including food packaging, filtration, medical, and transportation. Our mission is to create value by offering sustainable alternatives to single-use plastics and other non-renewable materials. Through continuous research and development, we strive to improve the functionality and eco-friendliness of our products. Visit our website to learn more.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

230 Patents

#8 in undefined, undefined

#14 in

#1,747 in US

#3,602 in the World

A. Ahlstrom Corporation

Forward Citations = 2,173

196 inventors:

Folke Engstrom (26 out of 31 patents)

Kaj Henricson (25 out of 63 patents)

Juhani M Isaksson (15 out of 22 patents)

4. Toivo J Niskanen (14 out of 23 patents)

5. Reijo Vesala (13 out of 27 patents)

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