Inventor · disambiguated record
Norbert Langenfeld
Also filed as: LANGENFELD NORBERT
3 granted patents·22 citations·filing 1981–1986
67Inventor score
Files withBAYER AG3
Top patents by PatentIndex Score
3 records- 0172US4880576AAcid halides, a process for their preparationBAYER AG·Filed 1986·Granted Nov 14, 1989·14 cites·12 claims
- 0256US4349471AProcess for the preparation of aromatic sulphonic acid halidesBAYER AG·Filed 1981·Granted Sep 14, 1982·5 cites·19 claims
- 0348US4359426AProcess for the production of aromatic isocyanates containing aromatically bound sulfochloride groupsBAYER AG·Filed 1981·Granted Nov 16, 1982·3 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →