Inventor
WIETZORECK HARDY
DE9 patents
⚠️ This page may combine multiple inventors who share the name “WIETZORECK HARDY”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHEMETALL GMBH
6 patentsUS7736730B2Jun 15, 2010
Method for pretreating and/or coating metallic surfaces with a paint-like coating prior to forming and use of substrates coated in this way
CHEMETALL GMBH29 citations91
US7615257B2Nov 10, 2009
Method for pretreating and/or coating metallic surfaces with a paint-like coating prior to forming and use of substrates coated in this way
CHEMETALL GMBH18 citations91
US6562148B1May 13, 2003
Pretreatment of aluminum surfaces with chrome-free solutions
CHEMETALL GMBH36 citations91
US7208053B2Apr 24, 2007
Method for applying a phosphate covering and use of metal parts thus phospated
CHEMETALL GMBH9 citations69
US7947333B2May 24, 2011
Method for coating of metallic coil or sheets for producing hollow articles
CHEMETALL GMBH5 citations61
US12203173B2Jan 21, 2025
Alternative composition and alternative method for effectively phosphating metal surfaces
CHEMETALL GMBH0 citations52
METALLGESELLSCHAFT AG
3 patentsUS5904786AMay 18, 1999
Method of applying phosphate coatings to metal surfaces
METALLGESELLSCHAFT AG15 citations70
US5203930AApr 20, 1993
Process of forming phosphate coatings on metal surfaces
METALLGESELLSCHAFT AG15 citations70
US5795408AAug 18, 1998
Process for the phosphatising treatment of steel strip or sheet galvanized on one side or alloy galvanized on one side
METALLGESELLSCHAFT AG10 citations68