Global Patent Index - EP 0829554 B1

EP 0829554 B1 2000-04-26 - Low pressure carburising device with a plurality of sequentially arranged chambers

Title (en)

Low pressure carburising device with a plurality of sequentially arranged chambers

Title (de)

Niederdruck-Aufkohlungsanlage mit mehreren hintereinander angeordneten Kammern

Title (fr)

Installation pour la cémentation à basse pression avec des compartiments disposés les unes après les autres

Publication

EP 0829554 B1 (DE)

Application

EP 97890166 A

Priority

AT 163596 A

Abstract (en)

[origin: EP0829554A1] The apparatus for low-pressure carburisation of batches of workpieces comprises a means for transporting them through its various chambers. The transport means take the form of a roller conveyor (22). Batches (4) of workpieces pass successively through a vacuum-tight entry chamber (6), a vacuumisable heating chamber (7) with a nitrogen atmosphere under a pressure of 1-2 bar, at least one carburisation chamber (10, 11) with carburisation gas under a pressure preferably of 10-30 mbar, at least one diffusion chamber (13, 14), and finally a quenching chamber (17) for high-pressure gas quenching.

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

C23C 8/20; C21D 1/773; C23C 8/22

IPC 8 full level (invention and additional information)

C21D 1/773 (2006.01); C23C 8/20 (2006.01); C23C 8/22 (2006.01)

CPC (invention and additional information)

C23C 8/20 (2013.01); C21D 1/773 (2013.01); C23C 8/22 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

EP 0829554 A1 19980318; EP 0829554 B1 20000426; EP 0829554 B2 20040512; AT 404029 B 19980727; AT A163596 A 19971215; DE 59701501 D1 20000531

INPADOC legal status


2011-03-31 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2010-11-30 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2010-07-30 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2010-07-30 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2010-05-21 [REG FR ST] NOTIFICATION OF LAPSE

- Effective date: 20100430

2010-04-28 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20090819

2009-01-30 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2008-11-28 [PGFP IT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2004-12-03 [ET3] FR: TRANSLATION FILED ** DECISION CONCERNING OPPOSITION

2004-06-02 [GBTA] GB: TRANSLATION OF AMENDED EP PATENT FILED (GB SECTION 77(6)(B)/1977)

2004-05-12 [27A] MAINTAINED AS AMENDED

- Effective date: 20040512

2004-05-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B2

- Designated State(s): DE FR GB IT

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-03-21 [26] OPPOSITION FILED

- Opponent name: IPSEN INTERNATIONAL GMBH

- Effective date: 20010125

2000-06-16 [ET] FR: TRANSLATION FILED

2000-06-01 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: ING. A. GIAMBROCONO & C. S.R.L.

2000-05-31 [REF] CORRESPONDS TO:

- Document: DE 59701501 20000531

2000-05-10 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20000413

2000-04-26 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE FR GB IT

1999-09-08 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19990722

1999-08-25 [RTI1] TITLE (CORRECTION)

- Free text: LOW PRESSURE CARBURISING DEVICE WITH A PLURALITY OF SEQUENTIALLY ARRANGED CHAMBERS

1998-12-02 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE FR GB IT

1998-12-02 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE FR GB IT

1998-04-22 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19980220

1998-03-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT

1998-03-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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