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For the Inventor, By the Inventor

Reinach, Switzerland

Erowa Ag


USPTO Granted Patents = 52

% Expired Patents = 17.3



Trademarks = 7

Forward Citations = 459

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12 inventors (with patents filed for the assignee):

goldMedal Rudolf Schneider (15 out of 18 patents)

silverMedal Hans Hediger (13 out of 13 patents)

bronzeMedal Basil Obrist (8 out of 9 patents)

4.  Bruno Sandmeier (7 out of 7 patents)

5.  Karl Fries (5 out of 5 patents)

6.  Marcel Lüscher (2 out of 2 patents)

7.  Niklaus Liechti (2 out of 2 patents)

8.  Dietmar W Kramer (1 out of 4 patents)

9.  Ferdinand Troxler (1 out of 2 patents)

10.  Erich Greber (1 out of 1 patent)

11.  Peter Nie (1 out of 1 patent)

12.  Rudolf Scheider (1 out of 1 patent)


Core Competencies:
Clamping Arrangement
Monitoring Device
Workpiece Carrier
Clamping Chuck
Manufacturing Plant
Measuring Machine
Electro-Erosive Processing
Tool-Change Apparatus
Position Monitoring
Clamping Apparatus
Handling Manipulator
Spark Erosion Machining

52 patents:

1. 12583068 - Clamping arrangement (2026-03-24),
2. 12343837 - Monitoring arrangement, clamping system with a monitoring arrangement and method for monitoring a clamping device by means of a monitoring arrangement (2025-07-01),
3. 12023772 - Arrangement for processing workpieces (2024-07-02),
4. 12017285 - Clamping chuck (2024-06-25),
5. 11065731 - Clamping device (2021-07-20),
6. 10493575 - Clamping chuck (2019-12-03),
7. 9937595 - Coupling device for a manipulator (2018-04-10),
8. 9863751 - Measuring machine for measuring workpieces (2018-01-09),
9. 9738048 - Powder press assembly (2017-08-22),
10. 9592579 - Clamping fixture (2017-03-14),
11. 9302359 - Clamping fixture (2016-04-05),
12. 9026251 - Monitoring device for position monitoring a robotic device and production system including a monitoring device (2015-05-05),
13. 8413973 - Clamping fixture (2013-04-09),
14. 8376340 - Workpiece clamping fixture (2013-02-19),
15. 8262072 - Work piece carrier for exactly positioning a work piece on a chuck and clamping apparatus with a chuck and a work piece carrier (2012-09-11),
Erowa AG, based in Reinach, Switzerland, specializes in advanced workpiece clamping systems that enhance precision and efficiency in manufacturing processes. The company focuses on developing innovative solutions such as clamping arrangements, monitoring devices, and workpiece carriers, which are essential for various industrial applications. Erowa's expertise extends to electro-erosive processing and tool-change apparatuses, positioning it as a key player in the field of manufacturing technology and automation.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Erowa Ag
52 Patents

#6 in Reinach

#283 in Switzerland

#13,537 in the World

Reinach, CH
Reinach, Switzerland

Erowa Ag

Forward Citations = 459

12 inventors:

goldMedal Rudolf Schneider (15 out of 18 patents)

silverMedal Hans Hediger (13 out of 13 patents)

bronzeMedal Basil Obrist (8 out of 9 patents)

4.  Bruno Sandmeier (7 out of 7 patents)

5.  Karl Fries (5 out of 5 patents)

Please report any incorrect information to [email protected]
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