SF

Stefan Frentzen

HA Huels Aktiengesellschaft: 1 patents #19 of 62Top 35%
📍 Raesfeld, DE: #2 of 2 inventorsTop 100%
Overall (1997): #75,656 of 185,788Top 45%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

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