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Ames, IA, United States of America

Sauer-Danfoss Inc.

USPTO Granted Patents = 170

% Expired Patents = 52.9

Trademarks = 4

Forward Citations = 1,029

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142 inventors (with patents filed for the assignee):

Michael D Gandrud (15 out of 17 patents)

Frederic W Pollman (13 out of 23 patents)

Reinhardt Thoms (12 out of 23 patents)

4. Robert J Stoppek (11 out of 11 patents)

5. Carsten Fiebing (8 out of 10 patents)

6. Joseph J Schottler (7 out of 9 patents)

7. Jack Zeng (6 out of 7 patents)

8. Doug Kardell (6 out of 8 patents)

9. Michael A Betz (6 out of 14 patents)

10. Steven H Gluck (6 out of 6 patents)

11. Bernd Hames (5 out of 8 patents)

12. Michael R Olson (5 out of 5 patents)

13. Wilhelm Gollner (5 out of 10 patents)

14. Jeff L Herrin (5 out of 6 patents)

15. Robert Klinkel (5 out of 5 patents)

Core Competencies:

Hydraulic Systems

Pressure Control

Electro-Hydraulic Units

Variable Displacement Pumps

Hydrostatic Transmission

Sensing Systems

Fluid Control

Joystick Devices

Tilt Sensors

Battery Powered Inverters

Traction Control

Microcontroller Housing

170 patents: Sort by Forward Citations

1. 9826288 - Sensing system for an automated vehicle (2017-11-21),

2. 9637873 - Sensing system for road construction equipment (2017-05-02),

3. 9127697 - Dynamically stable pressure control system (2015-09-08),

4. 9002582 - Multi-sonic sensor (2015-04-07),

5. 8943949 - Neutral setting apparatus of an adjustable hydraulic machine (2015-02-03),

6. 8855834 - Sensing system for following a stringline (2014-10-07),

7. 8646266 - Hydraulic output drive shaft generator (2014-02-11),

8. 8646167 - Method of actuating a wireless sensor of road construction equipment (2014-02-11),

9. 8528594 - Hydraulic system with leakage fluid removal (2013-09-10),

10. 8482523 - Magnetic control device (2013-07-09),

11. 8469677 - Check valve pump with electric bypass valve (2013-06-25),

12. 8469630 - Sensor system for construction equipment having wireless sonic sensor system (2013-06-25),

13. 8443596 - Hydraulic drive with an independent charge pump (2013-05-21),

14. D678283 - Vertical grip assembly (2013-03-19),

15. 8387738 - Electro-mechanical transmission for compact vehicles (2013-03-05),

Sauer-Danfoss Inc., headquartered in Ames, Iowa, specializes in hydraulic systems and fluid power technologies. The company develops a range of products including pressure control systems, electro-hydraulic units, and variable displacement pumps, catering to various industries that require advanced fluid control solutions. With a focus on innovation, Sauer-Danfoss also engages in research related to hydrostatic transmission and sensing systems, enhancing the efficiency and performance of hydraulic applications globally.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

Sauer-Danfoss Inc.

170 Patents

#2 in Ames, IA

#15 in Iowa

#2,349 in US

#4,857 in the World

Ames, IA, United States of America

Sauer-Danfoss Inc.

Forward Citations = 1,029

142 inventors:

Michael D Gandrud (15 out of 17 patents)

Frederic W Pollman (13 out of 23 patents)

Reinhardt Thoms (12 out of 23 patents)

4. Robert J Stoppek (11 out of 11 patents)

5. Carsten Fiebing (8 out of 10 patents)

Please report any incorrect information to [email protected]

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