Forward Citations = 14

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5 inventors (with patents filed for the assignee):

Erich Weidmann (2 out of 11 patents)

Erich Loepfe (2 out of 6 patents)

Beat De Coi (1 out of 41 patents)

4. Walter Graf (1 out of 2 patents)

5. Hans-Peter Keller (1 out of 4 patents)

4 patents: Sort by Forward Citations

1. 4927093 - Method for braking a moving thread-like material and thread brake for (1990-05-22),

2. 4873621 - Method of regulation and regulating device for an apparatus or group of (1989-10-10),

3. 4349784 - Device for monitoring yarn motion on a textile machine (1982-09-14),

4. 4267554 - Electronic device for monitoring a plurality of running threads on a (1981-05-12),

Company Overview

Gebrueder Loepfe AG is a Swiss family-owned company that specializes in developing and manufacturing electronic control systems for yarn processing in the textile industry. Established in 1955, Loepfe is a global leader in quality control solutions for yarn production, offering a wide range of products such as yarn clearer systems and monitoring devices. With a focus on innovation and customer satisfaction, Gebrueder Loepfe AG continues to provide cutting-edge technology and expertise to the textile industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

4 Patents

#8 in Wetzikon

#2,004 in Switzerland

Wetzikon, Switzerland

Gebrueder Loepfe Ag

Forward Citations = 14

5 inventors:

Erich Weidmann (2 out of 11 patents)

Erich Loepfe (2 out of 6 patents)

Beat De Coi (1 out of 41 patents)

4. Walter Graf (1 out of 2 patents)

5. Hans-Peter Keller (1 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Gebrueder Loepfe Ag. Retrieved from https://idiyas.com/company/gebrueder-loepfe-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]