For the Inventor, By the Inventor

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Porta Westfalica, Germany

Bernstein Ag

USPTO Granted Patents = 13

% Expired Patents = 61.5

EPO Patents = 6

Forward Citations = 41

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18 inventors (with patents filed for the assignee):

Markus Finger (5 out of 5 patents)

Joachim Ulfik (4 out of 6 patents)

Rolf Wecke (4 out of 16 patents)

4. Uwe Diekröger (2 out of 2 patents)

5. Michael Schnitker (2 out of 2 patents)

6. Lothar Pedron (2 out of 2 patents)

7. Marcus Scholz (1 out of 1 patent)

8. Georg Zwirkowski (1 out of 1 patent)

9. Thomas Krause (1 out of 1 patent)

10. Klaus Wehmeyer (1 out of 2 patents)

11. Meinhard Gerner (1 out of 3 patents)

12. Jürgen Weiss (1 out of 1 patent)

13. Micahel Leuschner (1 out of 1 patent)

14. Andreas Hofmann (1 out of 1 patent)

15. Matthias Krühler (1 out of 1 patent)

13 patents: Sort by Forward Citations

1. 10725437 - Safety sensor for monitoring the operational safety of a system (2020-07-28),

2. 10149542 - Support column system for supporting at least one computer installation, and support column therefor (2018-12-11),

3. 10024053 - Support column system for supporting at least one computer installation (2018-07-17),

4. 9646777 - Electrical switching device (2017-05-09),

5. 8933353 - Foot-operated switch (2015-01-13),

6. 7271358 - Switching hinge (2007-09-18),

7. 7238900 - Switching hinge (2007-07-03),

8. 6913247 - Quick-action tensioning device for cable control switches (2005-07-05),

9. 6891118 - Manually operable electrical operating member (2005-05-10),

10. 6750658 - Inductive safety sensor for monitoring doors and gates (2004-06-15),

11. 6667449 - Switch hinge (2003-12-23),

12. 6590156 - Sensor and profile groove housing (2003-07-08),

13. 6236006 - Switch with contact tips penetrating cable sheath and conductors by hinged lid pressure pad (2001-05-22),

BERNSTEIN AG is a global manufacturer of industrial safety switches, sensors, enclosures, and automation solutions. With over 70 years of experience, we provide high-quality and reliable products for various industries, including machinery, automation, and robotics. Our portfolio includes safety switches, position switches, limit switches, and emergency stop switches, all designed to ensure the safety and efficiency of industrial processes. In addition, we offer custom solutions tailored to meet specific customer requirements. Visit our website to explore our range of products and learn how we can support your safety needs.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

13 Patents

#2 in Porta Westfalica

#3,075 in Germany

#44,950 in the World

Porta Westfalica, Germany

Bernstein Ag

Forward Citations = 41

18 inventors:

Markus Finger (5 out of 5 patents)

Joachim Ulfik (4 out of 6 patents)

Rolf Wecke (4 out of 16 patents)

4. Uwe Diekröger (2 out of 2 patents)

5. Michael Schnitker (2 out of 2 patents)

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