Hans-Joachim Grapentin

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Berlin, DE

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Patents Grantslast 30 patents

Information Patent Grant
Treatment of circuit support with impulse excitation
- Patent number 6,908,515
- Issue date Jun 21, 2005
- Atotech Deutschland GmbH
- Rolf Schroder
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Solution and process for etching and activating surfaces of a nonco...
- Patent number 5,112,513
- Issue date May 12, 1992
- Schering AG
- Burkhard Bressel
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method of controlling epoxy resin etchant ion concentration
- Patent number 5,019,229
- Issue date May 28, 1991
- Schering Aktiengesellschaft
- Hans-Joachim Grapentin
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Conditioning agent for the treatment of base materials
- Patent number 4,940,554
- Issue date Jul 10, 1990
- Schering Aktiengesellschaft
- Hans-Joachim Grapentin
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Conditioning agent for the treatment of base materials
- Patent number 4,781,990
- Issue date Nov 1, 1988
- Hans-Joachim Grapentin
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
Treatment of circuit support with impulse excitation
- Publication number 20030029717
- Publication date Feb 13, 2003
- Rolf Schroder
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR