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For the Inventor, By the Inventor

Finspang, Sweden

Abb Stal Ab


USPTO Granted Patents = 42

Forward Citations = 184

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38 inventors (with patents filed for the assignee):

goldMedal Roine Brannstrom (7 out of 28 patents)

silverMedal Ragnar Ekbom (4 out of 6 patents)

bronzeMedal Lennart Hjalmarsson (3 out of 4 patents)

4.  Krishna K Pillai (3 out of 3 patents)

5.  Karl-Erik Andersson (2 out of 3 patents)

6.  Arne Jonsson (2 out of 7 patents)

7.  Antal Molnar (2 out of 3 patents)

8.  Martin Mangnsson (2 out of 2 patents)

9.  Ragnar Torstenfelt (2 out of 8 patents)

10.  Dilip Mukherjee (1 out of 5 patents)

11.  Ben Kyrklund (1 out of 4 patents)

12.  Frank Schliephacke (1 out of 2 patents)

13.  Lars Källberg (1 out of 1 patent)

14.  Lars Kallberg (1 out of 1 patent)

15.  Peter D Hartevelt (1 out of 1 patent)


Core Competencies:
Flow Machines
Valve Devices
Steam Turbines
Fluidized Bed Combustion
Gas Turbines
Power Plant Design
Pneumatic Transport Systems
Temperature Control
Cooling Systems
Energy Efficiency
Metal Alloy Treatment
Combustion Technology

42 patents:

1. 6231304 - Outlet device for a flow machine (2001-05-15),
2. 6192930 - Valve device (2001-02-27),
3. 6162013 - Steam turbine (2000-12-19),
4. 5971018 - Valve device for influencing an overpressurized flow of media (1999-10-26),
5. 5564897 - Axial turbo-machine assembly with multiple guide vane ring sectors and a (1996-10-15),
6. 5544596 - Method of supplying coal and sulphur absorbent to a combustor and a (1996-08-13),
7. 5464318 - Control system for extraction and injection of steam from and into a (1995-11-07),
8. 5347936 - Method and a device for preheating a fluidized bed (1994-09-20),
9. 5335630 - Method and device for controlling the power output during combustion in (1994-08-09),
10. 5315816 - Method and device for temperature control in a combustion plant (1994-05-31),
11. 5297622 - Method for cooling of dust separated from the flue gases from a PFBC (1994-03-29),
12. 5244285 - Hydrostatically mounted squeeze film damper (1993-09-14),
13. 5241863 - Buffer volume (1993-09-07),
14. 5234661 - Method for manufacturing rings or discs having a blade or vane rim (1993-08-10),
15. 5193337 - Method for operating gas turbine unit for combined production of (1993-03-16),
ABB Stal AB is a global company that specializes in manufacturing and supplying electrical transformers, generators, and substation equipment. With over 100 years of expertise, ABB Stal is a trusted and reliable partner for power industries worldwide. They offer a wide range of high-quality products and solutions to meet the demands of various power generation and distribution applications.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Abb Stal Ab
42 Patents

#2 in Finspang

#168 in Sweden

#16,326 in the World

Finspang, SE
Finspang, Sweden

Abb Stal Ab

Forward Citations = 184

38 inventors:

goldMedal Roine Brannstrom (7 out of 28 patents)

silverMedal Ragnar Ekbom (4 out of 6 patents)

bronzeMedal Lennart Hjalmarsson (3 out of 4 patents)

4.  Krishna K Pillai (3 out of 3 patents)

5.  Karl-Erik Andersson (2 out of 3 patents)

Please report any incorrect information to [email protected]
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