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For the Inventor, By the Inventor

Bern, Switzerland

Vsl International Ag


USPTO Granted Patents = 42

% Expired Patents = 33.3



Trademarks = 3

Forward Citations = 319

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45 inventors (with patents filed for the assignee):

goldMedal Rachid Annan (11 out of 11 patents)

silverMedal Erwin Siegfried (4 out of 4 patents)

bronzeMedal Yves Bournand (3 out of 4 patents)

4.  Jean Marie Laurens (3 out of 3 patents)

5.  Max Ernst Meyer (3 out of 3 patents)

6.  Jean-Baptiste Domage (3 out of 3 patents)

7.  Kurt Luthi (3 out of 3 patents)

8.  Andreas Schwarz (2 out of 2 patents)

9.  Johann Kollegger (2 out of 7 patents)

10.  Adrian Gnagi (2 out of 2 patents)

11.  Surya Kusuma (2 out of 2 patents)

12.  Walter Althaus (2 out of 2 patents)

13.  Denys Bour (2 out of 2 patents)

14.  Thibault Collin Delavaud (2 out of 2 patents)

15.  David Rogowsky (2 out of 2 patents)


Core Competencies:
Cable Anchorage
Post-Tensioning
Corrosion Protection
Structural Dampening
Reinforced Earth
Heavy Lifting
Detensioning System
Hybrid Pipe
Sealing Arrangement
Adjustable Formwork
Friction Damping
Tensioning Device

42 patents:

1. 12503822 - Detensioning system and a method for detensioning a structural element or a tensioning element (2025-12-23),
2. 12404641 - Armoury element for the protection of a structural material and/or load-carrying element (2025-09-02),
3. 11339544 - Hybrid pipe for stay cable and its manufacturing method (2022-05-24),
4. 11286629 - Pipe and a method for stay cable provided with stressing means (2022-03-29),
5. 10920383 - Cable anchorage system (2021-02-16),
6. 10751968 - Cylindrical thermal protection sheath (2020-08-25),
7. 10738422 - Cable anchorage with seal element, prestressing system comprising such anchorage and method for installing and tensioning a sheathed elongated element (2020-08-11),
8. 10669689 - Hydromill wheel with single disc cutting rollers (2020-06-02),
9. 10260588 - Cable friction damper (2019-04-16),
10. 9850630 - Cable anchorage with bedding material (2017-12-26),
11. 9790651 - Individual seal arrangement for cable anchorage (2017-10-17),
12. 9677244 - Retaining wall (2017-06-13),
13. 9631338 - Reinforced earth (2017-04-25),
14. 9551120 - Device and method for friction damping (2017-01-24),
15. 9376291 - Heavy lifting apparatus and method (2016-06-28),
Company Overview
Vsl International Ag, headquartered in Bern, Switzerland, specializes in advanced engineering solutions for construction and infrastructure projects. The company focuses on developing innovative technologies such as cable anchorage systems, hybrid pipes, and cylindrical thermal protection, which enhance structural integrity and durability. Vsl also offers expertise in heavy lifting apparatus, telescopic tower assemblies, and corrosion protection systems, catering to diverse sectors including civil engineering and heavy construction, ensuring safety and efficiency in challenging environments.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

42 Patents

#8 in Bern

#329 in Switzerland

#16,374 in the World

Bern, CH
Bern, Switzerland

Vsl International Ag

Forward Citations = 319

45 inventors:

goldMedal Rachid Annan (11 out of 11 patents)

silverMedal Erwin Siegfried (4 out of 4 patents)

bronzeMedal Yves Bournand (3 out of 4 patents)

4.  Jean Marie Laurens (3 out of 3 patents)

5.  Max Ernst Meyer (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Vsl International Ag. Retrieved from https://idiyas.com/company/vsl-international-ag

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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