Global patent index - EP 0892862 B1

EP 0892862 B1 2000-01-12 - ELCTROLYTE FOR ELECTROPOLISHING, METHOD OF ELECTROPOLISHING A STAINLESS STEEL OR A NICKEL ALLOY UTILIZING THE SAID ELECTROLYTE, AND ITS APPLICATION TO DECONTAMINATION

Title (en)

ELCTROLYTE FOR ELECTROPOLISHING, METHOD OF ELECTROPOLISHING A STAINLESS STEEL OR A NICKEL ALLOY UTILIZING THE SAID ELECTROLYTE, AND ITS APPLICATION TO DECONTAMINATION

Title (de)

ELEKTROPOLIERELEKTROLYT UND SEINE VERWENDUNGEN ZUM ELEKTROPOLIEREN VON ROSTFREIEM STAHL ODER NICKELLEGIERUNGEN SOWIE ZUR DEKONTANIMIERUNG

Title (fr)

ELECTROLYTE POUR L'ELECTROPOLISSAGE, PROCEDE D'ELECTROPOLISSAGE D'UN ACIER INOXYDABLE OU D'UN ALLIAGE DE NICKEL METTANT EN OEUVRE CET ELECTROLYTE, ET SON APPLICATION A LA DECONTAMINATION

Publication

EP 0892862 B1 (FR)

Application

EP 97918208 A

Priority

  • FR 9700648 W
  • FR 9604586 A

Abstract (en)

[origin: FR2747399A1] The invention concerns an electropolishing electrolyte composed of a mixture of glycolic acide, nitric acid and water in the following concentrations: glycolic acid: 152-538 g/kg, nitric acid: 170-568 g/kg, water: 280-678 g/kg. The invention also features a method for the electropolishing of a stainless steel or of a nickel alloy such as an Iconel utilizing this electrolyte, which is particularly useful in the decontamination of surfaces contaminated by radioelements, especially in the nuclear industry.

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

C25F 3/24; C25F 3/22

IPC 8 full level (invention and additional information)

C25F 3/22 (2006.01); C25F 3/24 (2006.01); G21F 9/00 (2006.01)

CPC (invention and additional information)

G21F 9/004 (2013.01); C25F 3/22 (2013.01); C25F 3/24 (2013.01)

Designated contracting state (EPC)

BE DE GB

EPO simple patent family

FR 2747399 A1 19971017; FR 2747399 B1 19980507; DE 69701135 D1 20000217; DE 69701135 T2 20000831; EP 0892862 A1 19990127; EP 0892862 B1 20000112; WO 9739168 A1 19971023

INPADOC legal status

2002-02-01 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2001-11-28 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

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- Effective date: 20010411

2001-10-31 [BERE] BE: LAPSED

- Owner name: COMMISSARIAT A L'ENERGIE ATOMIQUE

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- Effective date: 20010430

2001-04-30 [PG25 BE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2001-04-11 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2000-12-27 [26N] NO OPPOSITION FILED

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2000-05-17 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2000-04-12 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

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2000-02-17 [REF] CORRESPONDS TO:

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2000-01-12 [AK] DESIGNATED CONTRACTING STATES:

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1999-04-21 [17Q] FIRST EXAMINATION REPORT

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1999-01-27 [17P] REQUEST FOR EXAMINATION FILED

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1999-01-27 [AK] DESIGNATED CONTRACTING STATES:

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