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Zahnraderfabrik Renk Ag

USPTO Granted Patents = 27

Trademarks = 1

Forward Citations = 335

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22 inventors (with patents filed for the assignee):

Franz X Zaunberger (8 out of 12 patents)

Artur Kugler (8 out of 10 patents)

Gerhard Kirstein (4 out of 15 patents)

4. Heinrich Arndt (4 out of 6 patents)

5. Manfred Hirt (4 out of 5 patents)

6. Erich Pollak-Banda (4 out of 4 patents)

7. Rudi Reppert (3 out of 5 patents)

8. Erich John (3 out of 4 patents)

9. Franz-Xaver Zaunberger (2 out of 5 patents)

10. Ernst Jahnel (2 out of 2 patents)

11. Ralf Davids (1 out of 2 patents)

12. Albert Oesterle (1 out of 1 patent)

13. Erwin Bauer (1 out of 1 patent)

14. Gerhard Gotz (1 out of 1 patent)

15. Hilmar Jussen (1 out of 1 patent)

27 patents: Sort by Forward Citations

1. 4926715 - Planetary gear train (1990-05-22),

2. 4814990 - Control circuit for motor vehicles (1989-03-21),

3. 4690261 - Ship propulsion transmission with at least one engageable friction clutch (1987-09-01),

4. 4674350 - Deflection compensating gear system with radially displaceable ring gear (1987-06-23),

5. 4661772 - Measuring and testing circuit (1987-04-28),

6. 4653003 - Electronic control system for a motive unit (1987-03-24),

7. 4630507 - Drive system with flow brake (1986-12-23),

8. 4615239 - Ship gear train arrangement (1986-10-07),

9. 4615212 - Torque test apparatus (1986-10-07),

10. 4584903 - Drive system for twin screw extruder (1986-04-29),

11. 4576062 - High efficiency gear transmission (1986-03-18),

12. 4574659 - Precision drive for positioning solar energy apparatus (1986-03-11),

13. 4554451 - Optoelectronic position indicator for a drive system (1985-11-19),

14. 4514099 - Hydrodynamic bearing assembly (1985-04-30),

15. 4513637 - Gearing assembly (1985-04-30),

Zahnraderfabrik Renk Ag is a renowned company specialized in producing high-quality gear units and gear components. With over a century of experience, Renk AG is a global leader in transmission and power technology. Their products range from large marine gears to highly reliable gearbox systems for industrial and transportation applications. Renk AG focuses on innovation, precision engineering, and delivering tailor-made solutions to their customers worldwide.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

27 Patents

#43 in

#1,760 in Germany

#23,254 in the World

Zahnraderfabrik Renk Ag

Forward Citations = 335

22 inventors:

Franz X Zaunberger (8 out of 12 patents)

Artur Kugler (8 out of 10 patents)

Gerhard Kirstein (4 out of 15 patents)

4. Heinrich Arndt (4 out of 6 patents)

5. Manfred Hirt (4 out of 5 patents)

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