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For the Inventor, By the Inventor

Oulu, Finland

Rautaruukki Oy

USPTO Granted Patents = 15


Forward Citations = 80

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34 inventors (with patents filed for the assignee):

goldMedal Timo H Piironen (3 out of 7 patents)

silverMedal Heimo Keranen (2 out of 11 patents)

bronzeMedal Timo Sarkkinen (2 out of 5 patents)

4.  Pekka Brostrom (2 out of 2 patents)

5.  Aki Kauhanen (1 out of 2 patents)

6.  Pentti Moilanen (1 out of 3 patents)

7.  Pertti Alapuranen (1 out of 2 patents)

8.  Matti Koskinen (1 out of 1 patent)

9.  Teuvo Lehtoluoma (1 out of 1 patent)

10.  Matti Maenpaa (1 out of 1 patent)

11.  Kauko Henttinen (1 out of 1 patent)

12.  Aimo Saren (1 out of 1 patent)

13.  Seppo Pirinen (1 out of 1 patent)

14.  Pertti Jokipalo (1 out of 1 patent)

15.  Jaakko Heikkinen (1 out of 1 patent)


15 patents:

1. 5934848 - Machining of the sealing surface of the door frame in a coke oven (1999-08-10),
2. 5609785 - Method and apparatus for improving the performance of a heating furnace (1997-03-11),
3. 5586418 - Composite construction of reinforced concrete (1996-12-24),
4. 5570185 - Method for positioning a measuring device emitting and receiving optical (1996-10-29),
5. 5485412 - Method and apparatus for successive horizontal and vertical data (1996-01-16),
6. 5473438 - Spectroscopic method and apparatus for measuring optical radiation (1995-12-05),
7. 5436984 - Minimum delay dilation/erosion filter (1995-07-25),
8. 5383101 - Device for generating radiation (1995-01-17),
9. 5263094 - Method of and an equipment for optical inspection of strip and sheet (1993-11-16),
10. 5173028 - Semitrailer (1992-12-22),
11. 5123358 - Bogie construction of a railway car (1992-06-23),
12. 5018867 - Method and apparatus for the inspection of specularly reflective surfaces (1991-05-28),
13. 5009096 - Method and apparatus for the replacing of working rolls in a rolling mill (1991-04-23),
14. 4943193 - Loading trailer (1990-07-24),
15. 4579498 - Stacking apparatus for forming a stack of a predetermined shape from (1986-04-01),
Company Overview
Rautaruukki Oy, based in Oulu, Finland, specializes in advanced steel solutions and metal products for various industries, including construction, automotive, and energy. The company focuses on developing high-performance materials and innovative manufacturing processes to enhance product durability and efficiency. With a commitment to sustainability, Rautaruukki integrates cutting-edge technology in its operations, aiming to meet the evolving needs of its global clientele while contributing to environmentally responsible practices.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

Rautaruukki Oy USPTO Patent Assignee Logo
15 Patents

#5 in Oulu

#219 in Finland

#39,959 in the World

Oulu, FI
Oulu, Finland

Rautaruukki Oy

Forward Citations = 80

34 inventors:

goldMedal Timo H Piironen (3 out of 7 patents)

silverMedal Heimo Keranen (2 out of 11 patents)

bronzeMedal Timo Sarkkinen (2 out of 5 patents)

4.  Pekka Brostrom (2 out of 2 patents)

5.  Aki Kauhanen (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Rautaruukki Oy. Retrieved from https://idiyas.com/company/rautaruukki-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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