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Drees Stefan patents

Drees Stefan is listed as an inventor on 8 patents in our database. Major assignees and classification codes are summarized below.

Inventor statistics
MetricValue
InventorDrees Stefan
Total patents8
First publicationJun 23, 2022
Latest publicationMay 13, 2025

Notable patents

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Recent patents

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Major assignees

Companies most often associated with this inventor's publications.

Top assignees for this inventor
AssigneePatents
Evonik Operations Gmbh7
Evonik Oxeno Gmbh & Co Kg1

Top CPC classifications

Most common classification codes across this inventor's patents.

Top CPC codes for this inventor
CPCPatents
B01D61/124
B01J8/0054
B01D2311/164
B01D2311/144
B01J31/40464