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For the Inventor, By the Inventor

Ljung, Sweden

Tour & Andersson Ab


USPTO Granted Patents = 29

% Expired Patents = 10.3


Trademarks = 2

Forward Citations = 816

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20 inventors (with patents filed for the assignee):

goldMedal Daniel Jilderos (4 out of 10 patents)

silverMedal Leif Marstorp (4 out of 7 patents)

bronzeMedal Björn Holmgren (3 out of 4 patents)

4.  Per Norlander (3 out of 4 patents)

5.  Anders Helstad (3 out of 4 patents)

6.  Lars Lenberg (3 out of 5 patents)

7.  Leif Glansk (3 out of 3 patents)

8.  Daniel Stenberg (2 out of 2 patents)

9.  Hans Ivansson (2 out of 2 patents)

10.  Anders Engelbrektsson (2 out of 3 patents)

11.  Daniel Corso (1 out of 3 patents)

12.  Ulla Langelotz (1 out of 1 patent)

13.  Carl-Åke Däcker (1 out of 1 patent)

14.  Bengt-Inge Larsson (1 out of 1 patent)

15.  Curt Hammarstedt (1 out of 1 patent)


Core Competencies:
Hydronic Systems
Flow Regulation
Temperature Control
Multifunctional Valve
Pressure Regulator
Valve Handle
Sealing Ring Membrane
Die-Casting Brass Alloy
Measuring Needle
Combined Control Valve
Installation Unit
Sensor Unit

29 patents:

1. 8424556 - Valve with a delta P-function and flow limiting function (2013-04-23),
2. D677363 - Valve and handle for a hydronic system (2013-03-05),
3. D664451 - Transmitter and receiver for controlling signals in a hydronic system (2012-07-31),
4. 8152134 - Valve with regulating function (2012-04-10),
5. D656420 - Measuring needle for a hydronic system (2012-03-27),
6. D652748 - Hand unit (2012-01-24),
7. D628679 - Valve handle (2010-12-07),
8. D625389 - Valve (2010-10-12),
9. 7735514 - Apparatus for regulating flow of a medium in a heating and cooling system (2010-06-15),
10. D617218 - Sensor unit (2010-06-08),
11. D599434 - Valve cone for a regulating valve (2009-09-01),
12. D554249 - Installation unit in a heating or cooling system (2007-10-30),
13. D538889 - Multifunctional valve (2007-03-20),
14. D497977 - Sealing ring membrane (2004-11-03),
15. 6787101 - Die-casting brass alloy which is resistant to dezincification (2004-09-07),
Company Overview
Tour & Andersson AB is a prominent Swedish company specializing in the development and manufacturing of advanced valve and control solutions for various industrial applications. With a strong focus on innovation, the company provides products that enhance efficiency and reliability in fluid handling systems. Their expertise spans multiple sectors, including energy, water treatment, and process industries, positioning them as a key player in the global market for industrial automation and control technologies.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

29 Patents

#1 in Ljung

#230 in Sweden

#22,530 in the World

Ljung, SE
Ljung, Sweden

Tour & Andersson Ab

Forward Citations = 816

20 inventors:

goldMedal Daniel Jilderos (4 out of 10 patents)

silverMedal Leif Marstorp (4 out of 7 patents)

bronzeMedal Björn Holmgren (3 out of 4 patents)

4.  Per Norlander (3 out of 4 patents)

5.  Anders Helstad (3 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tour & Andersson Ab. Retrieved from https://idiyas.com/company/tour-and-andersson-ab

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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