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Uster, Switzerland

Zellweger Luwa Ag

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USPTO Granted Patents = 59

% Expired Patents = 8.5

CIPO Patents = 1

Trademarks = 7

Forward Citations = 211

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64 inventors (with patents filed for the assignee):

Peter Feller (5 out of 7 patents)

Isidor Harzenmoser (4 out of 5 patents)

Hans Wampfler (4 out of 10 patents)

4. Francois Baechler (4 out of 6 patents)

5. Peter Schilling (3 out of 11 patents)

6. Cyrill Bucher (3 out of 8 patents)

7. Rolf Hensel (3 out of 5 patents)

8. Robert Hoeller (3 out of 3 patents)

9. Jurg Zehr (3 out of 3 patents)

10. Francedillaois Baechler (3 out of 3 patents)

11. Diego Madone (2 out of 3 patents)

12. Rolf Joss (2 out of 4 patents)

13. Hanspeter Wepfer (2 out of 2 patents)

14. Johannes Heusser (2 out of 2 patents)

15. Peter F Aemmer (2 out of 8 patents)

Core Competencies:

Textile Quality

Yarn Testing

Defect Detection

Air Distribution

Fabric Monitoring

Yarn Faults

Textile Sensors

Production Efficiency

Measurement Devices

Nonwoven Fabrics

Quality Control

Textile Machinery

59 patents: Sort by Forward Citations

1. RE39655 - Air distributor assembly and process for air conditioning a textile machine using a displacement type air flow system (2007-05-28),

2. 6683687 - Method and apparatus for assessing the effect of yarn faults on woven or knitted fabrics (2004-01-27),

3. 6601521 - Traveling cleaner for textile manufacturing plant (2003-08-05),

4. 6553826 - Process and device for monitoring the quality of textile strips (2003-04-29),

5. 6510734 - Method of assessing the effects of yarn defects on textile fabrics (2003-01-28),

6. 6501086 - Method and device for evaluating defects in flat textile structures (2002-12-31),

7. 6499345 - Measuring device for thread-like test samples (2002-12-31),

8. 6430995 - Method and device for assessing yarn quality (2002-08-13),

9. 6422072 - Device for measuring properties of a longitudinally moved specimen such as yarn (2002-07-23),

10. 6412342 - Device for measuring properties of a textile product (2002-07-02),

11. 6381941 - Capacitor charged yarn cutting apparatus (2002-05-07),

12. 6374152 - Method and device for clearing yarns (2002-04-16),

13. 6346819 - Method and device for determining proportions of solid matter in a test material (2002-02-12),

14. 6343508 - Method for representing properties of elongated textile test specimens (2002-02-05),

15. 6244030 - Process and device for monitoring the quality of yarns (2001-06-12),

Company Overview

Zellweger Luwa AG, headquartered in Uster, Switzerland, specializes in advanced textile quality assessment technologies. The company focuses on developing innovative solutions for yarn testing, defect detection, and fabric monitoring, enhancing production efficiency in the textile industry. With a strong emphasis on textile sensors and air distribution systems, Zellweger Luwa AG aims to improve quality control processes and ensure optimal performance in textile manufacturing. Their expertise supports manufacturers in achieving high standards of quality and reliability.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

59 Patents

#2 in Uster

#259 in Switzerland

#12,247 in the World

Uster, Switzerland

Zellweger Luwa Ag

Forward Citations = 211

64 inventors:

Peter Feller (5 out of 7 patents)

Isidor Harzenmoser (4 out of 5 patents)

Hans Wampfler (4 out of 10 patents)

4. Francois Baechler (4 out of 6 patents)

5. Peter Schilling (3 out of 11 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Zellweger Luwa Ag. Retrieved from https://idiyas.com/company/zellweger-luwa-ag

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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