Global Patent Index - EP 1080253 A2

EP 1080253 A2 2001-03-07 - CHEMICAL MIXING, REPLENISHMENT, AND WASTE MANAGEMENT SYSTEM

Title (en)

CHEMICAL MIXING, REPLENISHMENT, AND WASTE MANAGEMENT SYSTEM

Title (de)

CHEMISCHES MISCH-, NACHFÜLL- UND ABFALLMANAGEMENTSYSTEM

Title (fr)

MELANGE CHIMIQUE, REGENERATION ET SYSTEME DE TRAITEMENT DES DECHETS

Publication

EP 1080253 A2 (EN)

Application

EP 99920246 A

Priority

  • US 9909541 W
  • US 8381198 P

Abstract (en)

[origin: WO9957340A2] A chemical control system for controlling the chemistry of a chemical solution having predetermined chemical constituents in a plating system, such as a NiFe plating system, employs a mix container for containing a plating solution and a hold container for containing a plating solution delivered from the mix container. A precision delivery arrangement delivers a precise predetermined quantum of a predetermined constituent of the plating solution to multiple mix containers and the hold containers. Transfer of plating solution between the mix and hold containers is effected by a transfer pump. Nitrogen gas that has been humidified with deionized water protects the plating solution from either acquiring water or becoming dehydrated, the humidified nitrogen gas being humidified to a predetermined relative humidity with respect to the temperature of the plating solution in the mix container. This is achieved by urging the nitrogen gas through a column that is at the same temperature as the plating solution. Precise delivery of the chemical constituents is achieved by a pneumatic pump arranged serially with an orifice and an inexpensive flow meter. The pneumatic pump is a positive displacement, double diaphragm pump.

IPC 1-7 (main, further and additional classification)

C25D 21/14

IPC 8 full level (invention and additional information)

C25D 21/14 (2006.01); C25D 21/18 (2006.01)

CPC (invention and additional information)

C25D 21/14 (2013.01)

Citation (search report)

See references of WO 9957340A3

Designated contracting state (EPC)

BE DE GB NL

EPO simple patent family

WO 9957340 A2 19991111; WO 9957340 A3 20000203; AU 3778999 A 19991123; EP 1080253 A2 20010307; JP 2002513861 A 20020514

INPADOC legal status


2006-08-02 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20060203

2003-03-19 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030130

2001-03-07 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001129

2001-03-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): BE DE GB NL