Inventor · disambiguated record
Siegfried Schwerin
Also filed as: SCHWERIN SIEGFRIED
4 granted patents·31 citations·filing 1975–1992
73Inventor score
Files withHOECHST AG4
Top patents by PatentIndex Score
4 records- 0183US4515639AAzo pigment formulationsHOECHST AG·Filed 1982·Granted May 7, 1985·20 cites·1 claims
- 0243US4048152AModified form of disazo pigment CI 20040HOECHST AG·Filed 1975·Granted Sep 13, 1977·2 cites·1 claims
- 0337US5266682ANitrogen-containing surface-active agentsHOECHST AG·Filed 1992·Granted Nov 30, 1993·5 cites·23 claims
- 0435US4939238ANitrogen-containing condensation products based on unmodified or modified natural resins, process for the preparation thereof and the use thereofHOECHST AG·Filed 1988·Granted Jul 3, 1990·4 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →