Stefan Birkenheuer

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Shanghai, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for corrosion-protecting pretreatment of a metallic surface...
- Patent number 12,043,753
- Issue date Jul 23, 2024
- Chemetall GmbH
- Stefan Birkenheuer
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method for anti-corrosion pre-treatment of a metal surface containi...
- Patent number 11,441,226
- Issue date Sep 13, 2022
- Chemetall GmbH
- Stefan Birkenheuer
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
PROCESS FOR CORROSION-PROTECTING PRETREATMENT OF A METALLIC SURFACE...
- Publication number 20240043713
- Publication date Feb 8, 2024
- CHEMETALL GMBH
- Stefan Birkenheuer
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
METHOD FOR ANTI-CORROSION PRE-TREATMENT OF A METAL SURFACE CONTAINI...
- Publication number 20190330745
- Publication date Oct 31, 2019
- CHEMETALL GMBH
- Stefan BIRKENHEUER
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
PROCESS FOR CORROSION-PROTECTING PRETREATMENT OF A METALLIC SURFACE...
- Publication number 20190249030
- Publication date Aug 15, 2019
- CHEMETALL GMBH
- Stefan Birkenheuer
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...