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Kemira Oy

USPTO Granted Patents = 53

CIPO Patents = 1

Trademarks = 4

Forward Citations = 478

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100 inventors (with patents filed for the assignee):

Pirkko J Virta (4 out of 4 patents)

Anders Weckman (3 out of 6 patents)

Thomas Slotte (3 out of 3 patents)

4. Lars Harald Petander (3 out of 4 patents)

5. Elias U Suokas (3 out of 5 patents)

6. Teuvo Maunula (2 out of 7 patents)

7. Eva-Liisa Mustonen (2 out of 3 patents)

8. Pekka J Vapaaoksa (2 out of 2 patents)

9. Pekka J Eskelinen (2 out of 3 patents)

10. Ilkka Turunen (2 out of 6 patents)

11. Kauko Kanniainen (2 out of 2 patents)

12. Veikko Loukeinen (2 out of 2 patents)

13. Vesa-Pekka Judin (2 out of 2 patents)

14. Thomas Ahlnas (2 out of 3 patents)

15. Matti H Ark Onen (2 out of 2 patents)

Core Competencies:

Breathing Masks

Hydrogen Peroxide Production

Catalyst Manufacturing

Waste Water Treatment

Phosphorus Extraction

Titanium Dioxide Preparation

Fertilizer Composition

Exhaust Gas Purification

Silicon Halides

Froth-Flotation Process

Coated Pigments

Wood Preservation

53 patents: Sort by Forward Citations

1. 5764203 - Breathing mask with a display unit (1998-06-09),

2. 5695609 - Process for producing paper (1997-12-09),

3. 5612277 - Catalyst and method for manufacturing the same (1997-03-18),

4. 5611928 - Process for treating waste water (1997-03-18),

5. 5603911 - Preparing a crystalline, stable sodium percarbonate (1997-02-18),

6. 5583087 - Method for impregnating catalyst support with platinum (1996-12-10),

7. 5580533 - Catalyst and process for purifying diesel exhaust gases (1996-12-03),

8. 5534476 - Use of a super alloy as a substrate for catalysts (1996-07-09),

9. 5482529 - Fertilizing preparation improving the extraction of phosphorus for plants (1996-01-09),

10. 5451243 - Controlled-release fertilizer composition in the form of a paste (1995-09-19),

11. 5445717 - Method for simultaneous production of alkali metal or ammonium (1995-08-29),

12. 5443811 - Method of preparing titanium dioxide (1995-08-22),

13. 5443808 - Method of producing alkali metal phosphate (1995-08-22),

14. 5435985 - Hydrogenation catalyst for use in a hydrogen peroxide process, and (1995-07-25),

15. 5410757 - Face shield (1995-05-02),

Kemira Oy is a global chemicals company serving customers in water-intensive industries. They provide expertise and tailored combinations of chemicals to improve the efficiency and quality of industrial processes. Their solutions support sustainable development by helping customers reduce energy consumption and waste production.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

53 Patents

#21 in Espoo

#68 in Finland

#12,935 in the World

Kemira Oy

Forward Citations = 478

100 inventors:

Pirkko J Virta (4 out of 4 patents)

Anders Weckman (3 out of 6 patents)

Thomas Slotte (3 out of 3 patents)

4. Lars Harald Petander (3 out of 4 patents)

5. Elias U Suokas (3 out of 5 patents)

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