Inventor · disambiguated record
Karl-Eduard Helf
Also filed as: HELF KARL E · HELF KARL-EDUARD · HELF KARL-EDUEARD
3 granted patents·18 citations·filing 1979–1989
66Inventor score
Files withHOECHST AG3
Top patents by PatentIndex Score
3 records- 0153US4910639ARaw material and film prepared therefrom, having improved electrical propertiesHOECHST AG·Filed 1989·Granted Mar 20, 1990·9 cites·19 claims
- 0233US4367398AContact element and process for the manufacture thereofHOECHST AG·Filed 1979·Granted Jan 4, 1983·7 cites·4 claims
- 0330US4773139AMethod for manufacturing an electrical capacitorHOECHST AG·Filed 1986·Granted Sep 27, 1988·2 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →