Robert J. Ludwig

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Brunswick, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Brightener additive and bath for alkaline cyanide-free zinc electro...
- Patent number 6,830,674
- Issue date Dec 14, 2004
- Columbia Chemical Corporation
- Robert J. Ludwig
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR

Patents Applicationslast 30 patents

Information Patent Application
Chromium(VI)-free, aqueous acidic chromium(III) conversion solutions
- Publication number 20070243397
- Publication date Oct 18, 2007
- Robert J. Ludwig
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Corrosion inhibiting composition for metals
- Publication number 20040170848
- Publication date Sep 2, 2004
- COLUMBIA CHEMICAL CORPORATION
- Robert J. Ludwig
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Brightener additive and bath for alkaline cyanide-free zinc electro...
- Publication number 20040084322
- Publication date May 6, 2004
- COLUMBIA CHEMICAL CORPORATION
- Robert J. Ludwig
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR