Inventor · disambiguated record
Helmut Erwien
Also filed as: ERWIEN HELMUT
4 granted patents·29 citations·filing 1976–1981
74Inventor score
Files withGEWERK EISENHUETTE WESTFALIA4
Top patents by PatentIndex Score
4 records- 0146US4176884AAnchoring apparatus for a mining installationGEWERK EISENHUETTE WESTFALIA·Filed 1978·Granted Dec 4, 1979·6 cites·15 claims
- 0243US4389072ALongwall mineral mining installationGEWERK EISENHUETTE WESTFALIA·Filed 1981·Granted Jun 21, 1983·13 cites·36 claims
- 0336US4094157AAnchoring apparatus for anchoring a mining installationGEWERK EISENHUETTE WESTFALIA·Filed 1976·Granted Jun 13, 1978·4 cites·14 claims
- 0428US4445878AChain stripper devices and assemblies for mining machinesGEWERK EISENHUETTE WESTFALIA·Filed 1981·Granted May 1, 1984·6 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →