Global Patent Index - EP 1084285 A1

EP 1084285 A1 2001-03-21 - PERFORATED SILICON MEMBRANE PROVIDED BY AN ELECTROCHEMICAL ETCHING METHOD

Title (en)

PERFORATED SILICON MEMBRANE PROVIDED BY AN ELECTROCHEMICAL ETCHING METHOD

Title (de)

PERFORIERTE SILIZIUM-MEMBRAN, HERGESTELLT MITTELS EINES ELEKTROCHEMISCHEN ÄTZVERFAHRENS

Title (fr)

MEMBRANE EN SILICIUM PERFOREE PRODUITE SELON UN PROCEDE D'ATTAQUE ELECTROCHIMIQUE

Publication

EP 1084285 A1 (DE)

Application

EP 99929077 A

Priority

  • DE 9901292 W
  • DE 19820756 A

Abstract (en)

[origin: DE19820756C1] A perforated workpiece, comprising a silicon substrate (1) having a first region (6) with through-pores (4) and a second region (7) with blind pores, is new. An Independent claim is also included for producing a perforated workpiece by electrochemically etching one face (2) of a silicon substrate (1) to form pores (4) of depth less than the substrate thickness, providing the opposite substrate face (3) with a mask layer which exposes first regions (6) of this opposite substrate face, etching the exposed face regions (6) to the bottoms of the pores (4) and then removing the mask layer.

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

C25F 3/12

IPC 8 full level (invention and additional information)

C25F 3/12 (2006.01); C25F 3/02 (2006.01); H01P 1/20 (2006.01)

CPC (invention and additional information)

C25F 3/02 (2013.01); H01P 1/20 (2013.01); Y10T 428/24273 (2013.01); Y10T 428/24331 (2013.01)

Citation (search report)

See references of WO 9958746A1

Designated contracting state (EPC)

DE FR GB IT NL

EPO simple patent family

DE 19820756 C1 19991111; EP 1084285 A1 20010321; EP 1084285 B1 20030806; JP 2002514689 A 20020521; TW 552322 B 20030911; US 6558770 B1 20030506; WO 9958746 A1 19991118

INPADOC legal status


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2006-01-25 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

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2003-12-10 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

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2003-09-11 [REF] CORRESPONDS TO:

- Document: DE 59906526 P 20030911

2003-08-06 [AK] DESIGNATED CONTRACTING STATES:

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2003-08-06 [REG GB FG4D] EUROPEAN PATENT GRANTED

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2001-03-21 [17P] REQUEST FOR EXAMINATION FILED

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2001-03-21 [AK] DESIGNATED CONTRACTING STATES:

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