Inventor · disambiguated record
Walter Bertkau
Also filed as: BERTKAU WALTER
8 granted patents·5 pending applications·17 citations·filing 2005–2015
79Inventor score
Top patents by PatentIndex Score
13 records- 0191US10131831B2Process for acidizing using retarded acid formulationsBASF SE·Filed 2015·Granted Nov 20, 2018·8 cites·20 claims
- 0274US7905964B2Method for the passivation of metal surfaces with compositions comprising polymers with acid groups and waxesBASF SE·Filed 2006·Granted Mar 15, 2011·3 cites·13 claims
- 0364US8568522B2Method of passivating metallic surfaces by means of copolymers having phosphoric acid and/or phosphonic acid groupsKLIPPEL FRANK·Filed 2007·Granted Oct 29, 2013·2 cites·15 claims
- 0464US7749337B2Method for the passivation of metal surfaces with polymers containing acid groupsBASF SE·Filed 2006·Granted Jul 6, 2010·4 cites·20 claims
- 0556US8372216B2Continuous method for treating the surface of metal stripsBASF SE·Filed 2009·Granted Feb 12, 2013·0 cites·20 claims
- 0654US11001902B2Production of leatherBASF SE·Filed 2014·Granted May 11, 2021·0 cites·9 claims
- 0750US2008197020A1Method for Producing Painted, Flat Metallic Moulded BodiesBASF AG·Filed 2006·Application pending·0 cites
- 0850US2010224286A1Method for coating zinc-plated steel strips with aqueous formulations of acidic polymersBASF SE·Filed 2008·Application pending·0 cites
- 0947US2008152820A1Detachable Protecting FilmsBASF AG·Filed 2006·Application pending·0 cites
- 1042US8163395B2Method for coating metalsWITTELER HELMUT·Filed 2005·Granted Apr 24, 2012·0 cites·13 claims
- 1141US2012080120A1Method for passivating a metallic surfaceFESENBECKER ACHIM·Filed 2011·Application pending·0 cites
- 1239US8863841B2Alkanesulfonic acid microcapsules and use thereof in deep wellsBERTKAU WALTER·Filed 2012·Granted Oct 21, 2014·0 cites·19 claims
- 1339US2015175872A1Process For Dissolving Deposits Comprising Alkaline Earth Metal SulfatesBASF SE·Filed 2013·Application pending·0 cites
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