Inventor · disambiguated record
Helmut Grassl
Also filed as: GRASSL HELMUT
2 granted patents·1 pending application·4 citations·filing 2008–2012
41Inventor score
Top patents by PatentIndex Score
3 records- 0148US7921868B2Airing and venting elements for pipes and fittingsHAWLE ARMATUREN GMBH·Filed 2008·Granted Apr 12, 2011·4 cites·13 claims
- 0233US2009026406A1Casing for a ventilating and evacuating valve for pipe lines and/or fittingsHAWLE ARMATUREN GMBH·Filed 2008·Application pending·0 cites
- 0328US9222590B2Ventilating and evacuating valve for conduit pipes and/or bracesGRASSL HELMUT·Filed 2012·Granted Dec 29, 2015·0 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →