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Sulzbach, Germany

Hydac System Gmbh

USPTO Granted Patents = 13

% Expired Patents = 53.8

EPO Patents = 13

Forward Citations = 44

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19 inventors (with patents filed for the assignee):

Heinz-Peter Huth (2 out of 6 patents)

Frank Günter Lehmann (2 out of 2 patents)

Hubertus Schmidt (2 out of 2 patents)

4. Michael Kühn (2 out of 4 patents)

5. Kristof Schlemmer (1 out of 2 patents)

6. Sascha Alexander Biwersi (1 out of 13 patents)

7. Christoph Stoenner (1 out of 6 patents)

8. Marcus Hettiger (1 out of 3 patents)

9. Martin Piechnick (1 out of 1 patent)

10. Wolfgang Britz (1 out of 1 patent)

11. Andreas Welsch (1 out of 2 patents)

12. Rüdiger Honsbein (1 out of 1 patent)

13. Wolfgang Hahmann (1 out of 9 patents)

14. Norbert Böhmer (1 out of 1 patent)

15. Daniel Thull (1 out of 1 patent)

13 patents: Sort by Forward Citations

1. 10408363 - Valve having a control slide guided in a valve housing so as to be longitudinally movable (2019-09-10),

2. 10145086 - Apparatus for blocking and for adjusting a pressure (2018-12-04),

3. 10066645 - Turbine valve actuator (2018-09-04),

4. 9016054 - Device for compensating for hydraulic effective pressures (2015-04-28),

5. 8614522 - Energy converting device (2013-12-24),

6. 8240646 - Damping system (2012-08-14),

7. 8096568 - Hydropneumatic axle suspension for vehicles (2012-01-17),

8. 7793707 - Fluid cooling device (2010-09-14),

9. 7740457 - Means for delivery of flowable media, especially lubricants (2010-06-22),

10. 7424211 - Means for influencing the temperature of flowable media, especially of lubricants found in a lubricant system (2008-09-09),

11. 7341263 - Hydropneumatic suspension (2008-03-11),

12. 7322270 - Safety circuit for media-operated consumers and process for its operation (2008-01-29),

13. 7251936 - Suspension device (2007-08-07),

Hydac System GmbH, headquartered in Sulzbach, Germany, specializes in fluid technology and hydraulic systems. The company develops a wide range of products including hydraulic components, filtration systems, and electronic controls, catering to various industries such as automotive, aerospace, and industrial machinery. With a strong focus on innovation, Hydac is committed to enhancing system efficiency and reliability through advanced engineering solutions and comprehensive service offerings, positioning itself as a key player in the global market.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

13 Patents

#9 in Sulzbach

#3,075 in Germany

#44,950 in the World

Sulzbach, Germany

Hydac System Gmbh

Forward Citations = 44

19 inventors:

Heinz-Peter Huth (2 out of 6 patents)

Frank Günter Lehmann (2 out of 2 patents)

Hubertus Schmidt (2 out of 2 patents)

4. Michael Kühn (2 out of 4 patents)

5. Kristof Schlemmer (1 out of 2 patents)

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