% Expired Patents = 66.7

Forward Citations = 33

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6 inventors (with patents filed for the assignee):

Michael Wend (3 out of 16 patents)

Thomas Johannesmann (1 out of 4 patents)

Dirk Sieksmeier (1 out of 12 patents)

4. Paul Janzen (1 out of 15 patents)

5. Sigurd Völker (1 out of 4 patents)

6. Andreas Schwan (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 9169068 - Rack storage and retrieval device for a rack storage facility, rack storage facility with a rack storage and retrieval device of this type and method for the separate removal of goods from a rack storage facility of this type (2015-10-27),

2. 9027734 - Buffer section for a conveying system and conveying system of this type (2015-05-12),

3. 8607963 - Conveyor installation comprising carrier bags for material to be transported (2013-12-17),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

3 Patents

#48 in Bielefeld

#8,434 in Germany

Bielefeld, Germany

Duerkopp Foerdertechnik Gmbh

Forward Citations = 33

6 inventors:

Michael Wend (3 out of 16 patents)

Thomas Johannesmann (1 out of 4 patents)

Dirk Sieksmeier (1 out of 12 patents)

4. Paul Janzen (1 out of 15 patents)

5. Sigurd Völker (1 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Duerkopp Foerdertechnik Gmbh. Retrieved from https://idiyas.com/company/duerkopp-foerdertechnik

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]