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Hans-Jurgen Ehrich
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Berlin, DE
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last 30 patents
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Patent Grant
Conditioning means for printed circuits
Patent number
4,966,786
Issue date
Oct 30, 1990
Schering Aktiengesellschaft
Hans-Jurgen Ehrich
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Bath and process for galvanic separation of palladium-nickel alloys
Patent number
4,299,672
Issue date
Nov 10, 1981
Schering Aktiengesellschaft
Hans-Jurgen Ehrich
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Grant
Method for producing printed circuits
Patent number
4,285,991
Issue date
Aug 25, 1981
Schering AG
Klaus Gedrat
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Process for preparation of metal patterns on insulating carrier mat...
Patent number
4,262,085
Issue date
Apr 14, 1981
Schering Aktiengesellschaft
Hans-Jurgen Ehrich
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Solution and process for the activation of surfaces for metallization
Patent number
4,248,632
Issue date
Feb 3, 1981
Schering Aktiengesellschaft
Hans J. Ehrich
C07 - ORGANIC CHEMISTRY