Global Patent Index - EP 1099013 A2

EP 1099013 A2 2001-05-16 - PACED CHEMICAL REPLENISHMENT SYSTEM

Title (en)

PACED CHEMICAL REPLENISHMENT SYSTEM

Title (de)

STIMULIERTES CHEMISCHES NACHFÜLLSYSTEM

Title (fr)

SYSTEME REGULE DE REGENERATION EN CONSTITUANTS CHIMIQUES

Publication

EP 1099013 A2 (EN)

Application

EP 99933935 A

Priority

  • US 9915752 W
  • US 9255198 P

Abstract (en)

[origin: WO0003073A2] A method of controlling the content of a chemical bath includes the steps of: determining a replenishment condition for the chemical bath; defining a unit of the replenishment condition; establishing a pacing factor corresponding to a replenishment volume of a replenishment medium per unit of the replenishment condition; and defining a replenishment threshold corresponding to the product of a predetermined number of the defined units of the replenishment condition and the pacing factor. The rate of continued replenishment of the predetermined constituent of the chemical bath is determined in response to the replenishment condition, which may be elapsed time, ampere-hours (or coulombs), number of product loads, product surface area, line speed over time, etc. The method replenishes constituents as they actually are consumed. It also prevents depletion (or buildup in the case of decanting a by-product) and the associated time delay related to detection and correction. The system permits the operator to set the replenishment delivery calculations. Once these settings are established, the system will automatically adjust the replenishment amount based on the replenishment condition by analysis of the plating bath.

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); C25D 21/18 (2013.01)

Citation (search report)

See references of WO 0003073A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0003073 A2 20000120; WO 0003073 A3 20001116; AU 4988199 A 20000201; EP 1099013 A2 20010516; JP 2003527477 A 20030916

INPADOC legal status


2004-08-18 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040210

2003-09-10 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030729

2001-05-16 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010213

2001-05-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-05-16 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI