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Forward Citations = 25

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11 inventors (with patents filed for the assignee):

Tobias Gerhardt (2 out of 7 patents)

Martin Herrenknecht (2 out of 2 patents)

Michael Lubberger (1 out of 5 patents)

4. Tobias Engel (1 out of 3 patents)

5. Werner Suhm (1 out of 2 patents)

6. Hans-Peter Uffmann (1 out of 2 patents)

7. Rainer Griesbaum (1 out of 1 patent)

8. Rolf Heerssen (1 out of 1 patent)

9. Gebhard Lehmann (1 out of 1 patent)

10. Boris Jung (1 out of 1 patent)

11. Lutz Zur Linde (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 12571263 - Expanding drill device (2026-03-10),

2. 12460487 - Drill head for creating a borehole in the ground (2025-11-04),

3. 12270291 - Method for monitoring overburden when advance working in the ground, and advance- working device (2025-04-08),

4. 10364611 - Drill head for expanding a pilot bore in order to create a borehole (2019-07-30),

5. 5437500 - Tunneling machine with center cutter and debris removing means (1995-08-01),

6. 5184918 - Recoverable tunnelling machine (1993-02-09),

Herrenknecht AG is a leading global manufacturer of tunnel boring machines and equipment for underground construction. Founded in 1977, the company specializes in the development and production of innovative tunneling technology, providing solutions for various projects including transportation, water management, and energy. With a commitment to quality and sustainability, Herrenknecht operates worldwide, delivering advanced machinery and services that meet the demands of modern infrastructure development. The company is known for its engineering excellence and has contributed to numerous landmark projects across the globe.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

6 Patents

#2 in Schwanau

#5,401 in Germany

Schwanau, Germany

Herrenknecht