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Elmhart Neuber

HA Huels Aktiengesellschaft: 1 patents #269 of 532Top 55%
Overall (All Time): #3,730,905 of 4,157,543Top 90%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5693817 Solvent-free process for preparing 4-amino-2,2,6,6-tetramethylpiperidine Stefan Frentzen, Gerhard Thelen 1997-12-02