For the Inventor, By the Inventor

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Freiburg, Germany

Efd Induction Gmbh

USPTO Granted Patents = 3

EPO Patents = 7

Forward Citations = 2

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7 inventors (with patents filed for the assignee):

Joerg Rollmann (1 out of 8 patents)

Bernd Stakemeier (1 out of 6 patents)

Reinhard Zernickel (1 out of 1 patent)

4. Josef Wagner (1 out of 1 patent)

5. Leif Markegaard (1 out of 1 patent)

6. Wilfried Spintig (1 out of 2 patents)

7. Kristian Berggren (1 out of 1 patent)

8. Jörg Rollmann (8 patents)

9. Wiilfried Spintig (0 patent)

10. David Eckert (0 patent)

11. Hansjuerg Stiele (0 patent)

12. David Eckert (0 patent)

13. Daniel Kaltenbach (0 patent)

14. Kristian Berggren (0 patent)

3 patents: Sort by Forward Citations

1. 8766150 - Device for hardening the teeth of gear wheels by individual inductive heat treatment for each tooth, using several inductors (2014-07-01),

2. 8338760 - Inductor for induction hardening of metal, rod-shaped toothed racks (2012-12-25),

3. 8091239 - Method for the production of a bearing ring for large-size rolling bearings (2012-01-10),

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USPTO Data Jan 1 1976 - Jan 6 2026

3 Patents

#37 in Freiburg

#8,288 in Germany

Freiburg, Germany

Efd Induction Gmbh

Forward Citations = 2

7 inventors:

Joerg Rollmann (1 out of 8 patents)

Bernd Stakemeier (1 out of 6 patents)

Reinhard Zernickel (1 out of 1 patent)

4. Josef Wagner (1 out of 1 patent)

5. Leif Markegaard (1 out of 1 patent)

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