Inventor · disambiguated record
Stefan Birkenheuer
Also filed as: BIRKENHEUER STEFAN
5 granted patents·0 citations·filing 2015–2019
58Inventor score
Top patents by PatentIndex Score
5 records- 0158US12043758B2Method for treating metallic surfaces with an acidic aqueous composition to improve corrosion resistanceCHEMETALL GMBH·Filed 2019·Granted Jul 23, 2024·0 cites·16 claims
- 0253US12049571B2Method for treating metallic surfaces with an acidic aqueous composition and a post rinsing composition to improve corrosion resistanceSPECIALTY OPERATIONS FRANCE·Filed 2019·Granted Jul 30, 2024·0 cites·16 claims
- 0348US11441226B2Method for anti-corrosion pre-treatment of a metal surface containing steel, galvanised steel, aluminium, magnesium and/or a zinc-magnesium alloyCHEMETALL GMBH·Filed 2017·Granted Sep 13, 2022·0 cites·17 claims
- 0445US12043753B2Process for corrosion-protecting pretreatment of a metallic surface containing steel, galvanized steel, aluminum, an aluminum alloy, magnesium and/or a zinc-magnesium alloyCHEMETALL GMBH·Filed 2017·Granted Jul 23, 2024·0 cites·21 claims
- 0544US11346002B2Composition for coating of metallic surfaces with good adhesion, in particular aluminum materialsCHEMETALL GMBH·Filed 2015·Granted May 31, 2022·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →