Trademarks = 3

Forward Citations = 68

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8 inventors (with patents filed for the assignee):

Hansruedi Stutz (5 out of 12 patents)

Erich Weidmann (2 out of 11 patents)

Walter Schumperli (2 out of 3 patents)

4. Hans-Peter Keller (2 out of 4 patents)

5. Erich Loepfe (1 out of 6 patents)

6. Karl Lapp (1 out of 2 patents)

7. Max Bossard (1 out of 1 patent)

8. Beat De Coi (1 out of 1 patent)

10 patents: Sort by Forward Citations

1. 4635216 - Length measuring device for a thread (1987-01-06),

2. 4565224 - Apparatus for monitoring weft thread in a weaving machine (1986-01-21),

3. 4549268 - Apparatus for measuring the length of filamentary material, such as yarn (1985-10-22),

4. 4512028 - Electronic scanner for monitoring running threads at a multitude of (1985-04-16),

5. 4447955 - Method for determining the length of filamentary materials, such as (1984-05-15),

6. 4428405 - Electronic control device on a gripper shuttle weaving machine (1984-01-31),

7. 4421143 - Inductive projectile sensor on a gripper shuttle weaving machine (1983-12-20),

8. 4415008 - Device for monitoring the weft thread travel on an air jet weaving (1983-11-15),

9. 4373266 - Equipment for continuously measuring the length of an endless material (1983-02-15),

10. 4359068 - Electronic weft stop motion on a gripper shuttle weaving machine (1982-11-16),

Company Overview

Loepfe Brothers Limited is a Swiss company specializing in the development and manufacturing of advanced measurement and control systems for the textile industry. With a focus on enhancing production efficiency and quality, the company offers innovative solutions that integrate seamlessly into various textile manufacturing processes. Their expertise spans across areas such as yarn and fabric inspection, ensuring that manufacturers can achieve optimal performance and consistency in their products.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

10 Patents

#5 in Wetzikon

#1,045 in Switzerland

#56,047 in the World

Wetzikon, Switzerland

Loepfe Brothers Limited

Forward Citations = 68

8 inventors:

Hansruedi Stutz (5 out of 12 patents)

Erich Weidmann (2 out of 11 patents)

Walter Schumperli (2 out of 3 patents)

4. Hans-Peter Keller (2 out of 4 patents)

5. Erich Loepfe (1 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Loepfe Brothers Limited. Retrieved from https://idiyas.com/company/loepfe-brothers

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]