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For the Inventor, By the Inventor

Espoo, Finland

Outokumpu Engineering Contractors Oy


USPTO Granted Patents = 12

Forward Citations = 70

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24 inventors (with patents filed for the assignee):

goldMedal Launo L Lilja (5 out of 62 patents)

silverMedal Valto J Makitalo (5 out of 34 patents)

bronzeMedal Risto Saarinen (3 out of 22 patents)

4.  Pekka Hanniala (3 out of 4 patents)

5.  Bror G Nyman (2 out of 53 patents)

6.  Pentti J Kaasinen (2 out of 2 patents)

7.  Lasse J Valli (2 out of 2 patents)

8.  Erkki Krogerus (2 out of 2 patents)

9.  Ilkka Veikko Kojo (2 out of 13 patents)

10.  Stig-Erik Hultholm (1 out of 37 patents)

11.  Timo Saarenpaa (1 out of 3 patents)

12.  Rolf E Malmstrom (1 out of 10 patents)

13.  Markus K Ranki (1 out of 1 patent)

14.  Iikka Kojo (1 out of 1 patent)

15.  Stig-Erik Hulthom (1 out of 1 patent)


12 patents:

1. 5772955 - Apparatus for suspension smelting (1998-06-30),
2. 5674310 - Method and apparatus for feeding reaction gas and solids (1997-10-07),
3. 5662871 - Method for extracting metals from large solution flows and apparatus for (1997-09-02),
4. 5628817 - Method for leaching nickel-copper matte employing substantially neutral (1997-05-13),
5. 5574956 - Method and apparatus for treatment sulphidic concentrates (1996-11-12),
6. 5565016 - Method for suspension smelting (1996-10-15),
7. 5549854 - Method and apparatus for forming controlled vortexes and for (1996-08-27),
8. 5505434 - Method and apparatus for improving heat and dust recovery in a waste (1996-04-09),
9. 5492554 - Method for producing high-grade nickel matte from at least partly (1996-02-20),
10. 5443620 - Method for oxidizing pulverous fuel with two gases having different (1995-08-22),
11. 5362032 - Apparatus for feeding gases into a smelting furnace (1994-11-08),
12. 5358222 - Apparatus for oxidizing pulverous fuel with two gases having different (1994-10-25),
Company Overview
Outokumpu Engineering Contractors Oy, based in Espoo, Finland, specializes in engineering and contracting services primarily for the metals and mining industries. The company focuses on providing innovative solutions that enhance operational efficiency and sustainability in resource extraction and processing. With a strong emphasis on research and development, Outokumpu leverages advanced technologies to optimize processes and improve product quality, catering to both local and international markets.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

12 Patents

#57 in Espoo

#255 in Finland

#48,209 in the World

Espoo, FI
Espoo, Finland

Outokumpu Engineering Contractors Oy

Forward Citations = 70

24 inventors:

goldMedal Launo L Lilja (5 out of 62 patents)

silverMedal Valto J Makitalo (5 out of 34 patents)

bronzeMedal Risto Saarinen (3 out of 22 patents)

4.  Pekka Hanniala (3 out of 4 patents)

5.  Bror G Nyman (2 out of 53 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Outokumpu Engineering Contractors Oy. Retrieved from https://idiyas.com/company/outokumpu-engineering-contractors-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]
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