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Wuppertal, Germany

K.a. Schmersal Gmbh & Co.

USPTO Granted Patents = 22

CIPO Patents = 1

EPO Patents = 4

Forward Citations = 193

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18 inventors (with patents filed for the assignee):

Hermann Friedrich Hoepken (5 out of 6 patents)

Helmut Letzel (3 out of 3 patents)

Klaus Schulze (3 out of 3 patents)

4. Siegfried Schulz (3 out of 3 patents)

5. Friedhelm Heuer (2 out of 2 patents)

6. Burkhart Seim (2 out of 2 patents)

7. Karl-Georg Eicker (2 out of 2 patents)

8. Yasar Cevik (1 out of 4 patents)

9. Guntram Fust (1 out of 2 patents)

10. Manfred Eichenauer (1 out of 1 patent)

11. Christian Oelschlegel (1 out of 1 patent)

12. Gerd Lausberg (1 out of 2 patents)

13. Uwe Franke (1 out of 1 patent)

14. Stefan Turk (1 out of 1 patent)

15. Thomas Kuhlmann (1 out of 1 patent)

22 patents: Sort by Forward Citations

1. 7357429 - Safety lock (2008-04-15),

2. 6798634 - Device for actuating an electromagnet (2004-09-28),

3. 6659232 - Method and device for position detection of an object along an acoustic-signal conductor (2003-12-09),

4. 6570817 - Apparatus for detecting position (2003-05-27),

5. 6539760 - Monitoring device (2003-04-01),

6. 6366532 - Apparatus for detecting position (2002-04-02),

7. 6311803 - Acoustical position detector (2001-11-06),

8. 6283514 - Apparatus for monitoring and controlling access to a restricted area (2001-09-04),

9. 6212052 - Contactless safety switch (2001-04-03),

10. 6210179 - Field-bus connecting device (2001-04-03),

11. 6100479 - Actuator for a safety switch (2000-08-08),

12. 6087605 - Pushbutton switch (2000-07-11),

13. 6049284 - Method and zero-speed monitor for monitoring a three-phase machine (2000-04-11),

14. 5896783 - Safety switch device (1999-04-27),

15. 5821484 - Safety switch (1998-10-13),

K.A. Schmersal GmbH & Co. is a leading provider of safety products and solutions for the industrial sector. With over 70 years of experience, they offer a wide range of safety switches, sensors, and control systems to ensure workplace safety and protection. Their products are known for their reliability, durability, and innovation, making them a trusted partner for businesses worldwide.

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

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USPTO Data Jan 1 1976 - Dec 16 2025

22 Patents

#22 in Wuppertal

#2,084 in Germany

#27,882 in the World

Wuppertal, Germany

K.a. Schmersal Gmbh & Co.

Forward Citations = 193

18 inventors:

Hermann Friedrich Hoepken (5 out of 6 patents)

Helmut Letzel (3 out of 3 patents)

Klaus Schulze (3 out of 3 patents)

4. Siegfried Schulz (3 out of 3 patents)

5. Friedhelm Heuer (2 out of 2 patents)

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