Inventor · disambiguated record
Stefan Frentzen
Also filed as: FRENTZEN STEFAN
2 granted patents·26 citations·filing 1995–1996
61Inventor score
Technology areasC07D
Files withHUELS CHEMISCHE WERKE AG2
Top patents by PatentIndex Score
2 records- 0163US5773622AContinuous process for the preparation of 4-amino-2,2,6,6-tetramethylpiperidineHUELS CHEMISCHE WERKE AG·Filed 1996·Granted Jun 30, 1998·13 cites·21 claims
- 0262US5693817ASolvent-free process for preparing 4-amino-2,2,6,6-tetramethylpiperidineHUELS CHEMISCHE WERKE AG·Filed 1995·Granted Dec 2, 1997·13 cites·11 claims
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