DISPOSITIF D'ACTIONNEMENT POUR ARMATURE D'ECOULEMENT D'UN RESERVOIR DE CHASSE
| N° de brevet: |
EP1208272 (A1) |
| Date de publication: |
2002-05-29 |
| Inventeur(s): |
HANFT MATTHIAS [DE];KRZYZANOWSKI MICHAEL [DE]; |
| Demandeur(s): |
FRIATEC AG [DE]; |
| Classification: |
E03D1/14;E03D5/092; |
| N° de demande: |
EP20000958510 20000829 |
| Numéro(s) de priorité: |
DE19991041507 19990831;DE20001037372 20000729;WO2000EP08401 20000829 |
The objective of present invention is to provide an electroplating solution capable of forming the upper face of a via-hole and the upper face of a conductor circuit in the same layer in approximately the same plane at the time of manufacturing a multilayer printed circuit board. The electroplating solution of the present invention is characterized by containing 50 to 300 g/L of copper sulfate, 30 to 200 g/L of sulfuric acid, 25 to 90 mg/L of chlorine ion, and 1 to 1000 mg/L of an additive comprising at least a levelling agent and a brightener. <IMAGE>
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