Lunke & Sohn Gmbh

Calculating rank

USPTO Granted Patents = 4

Forward Citations = 92

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10 inventors (with patents filed for the assignee):

Ralf Mertin (3 out of 6 patents)

Alfred Grossbach (2 out of 2 patents)

Holger Seel (1 out of 55 patents)

4. Jurgen Schrader (1 out of 23 patents)

5. Jan Schilling (1 out of 7 patents)

6. Gerhard Zweigart (1 out of 13 patents)

7. Klaus P Claar (1 out of 30 patents)

8. Peter Kassner (1 out of 1 patent)

9. Helmut Staiger (1 out of 1 patent)

10. Artur Mangold (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 4829633 - Vehicle door hinge (1989-05-16),

2. 4815775 - Power-assisted lock for vehicles (1989-03-28),

3. 4025104 - Sliding door for vehicles, especially automobiles (1977-05-24),

4. 4019775 - Sliding door for vehicles, especially automobiles (1977-04-26),

Company Overview

Lunke & Sohn GmbH is a leading company specializing in high-quality construction and building materials. With over 50 years of experience, we have built a strong reputation for reliability, innovation, and exceptional customer service. Our range of products includes bricks, tiles, and roofing materials, all designed to meet the highest standards of quality and sustainability. Visit our website to learn more about our products and services.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

4 Patents

#10 in Witten (Ruhr)

#7,039 in DT

Witten, Germany

Lunke & Sohn Gmbh

Forward Citations = 92

10 inventors:

Ralf Mertin (3 out of 6 patents)

Alfred Grossbach (2 out of 2 patents)

Holger Seel (1 out of 55 patents)

4. Jurgen Schrader (1 out of 23 patents)

5. Jan Schilling (1 out of 7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Lunke & Sohn Gmbh. Retrieved from https://idiyas.com/company/lunke-and-sohn

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]