Global Patent Index - EP 0690138 B1

EP 0690138 B1 2000-08-30 - Process for quenching workpieces with gases and heat treating installation for carrying out said process

Title (en)

Process for quenching workpieces with gases and heat treating installation for carrying out said process

Title (de)

Verfahren zum Abschrecken von Werkstücken durch Gase und Wärmebehandlungsanlage zur Durchführung des Verfahrens

Title (fr)

Procédé de trempe à gaz de pièces à usiner et installation de traitement thermique pour la mise en oeuvre de ce procédé

Publication

EP 0690138 B1 (DE)

Application

EP 95104784 A

Priority

DE 4422588 A

Abstract (en)

[origin: DE4422588C1] A process for quenching of workpieces using gases in a heat treatment installation (1) and heat exchanging of the circulating gases on a heat exchanging surface (12,15) in at least one heat exchanger (11,14) is novel in that the heat exchanging surfaces (15) of the at least one heat exchanger (14) are cooled by a cooling unit (20) and a cooling agent to temps. below 0 deg C. Also claimed is the heat treatment installation for carrying out the above process.

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

C21D 1/613

IPC 8 full level (invention and additional information)

C21D 1/62 (2006.01); C21D 1/767 (2006.01); C21D 1/613 (2006.01); C21D 1/773 (2006.01)

CPC (invention and additional information)

C21D 1/767 (2013.01); C21D 1/62 (2013.01); C21D 1/613 (2013.01); C21D 1/773 (2013.01)

Citation (examination)

Ullmanns Encyklopädie der technischen Chemie, 4. Auflage(1986), Bd 2, Seite 446

Designated contracting state (EPC)

AT CH DE FR GB IT LI SE

EPO simple patent family

DE 4422588 C1 19950622; DE 4422588 C2 19990923; AT 195979 T 20000915; EP 0690138 A1 19960103; EP 0690138 B1 20000830; US 5630322 A 19970520

INPADOC legal status


2003-01-08 [GBPR] GB: PATENT REVOKED UNDER ART. 102 OF THE EP CONVENTION DESIGNATING THE UK AS CONTRACTING STATE

- Free text: 20021022

2003-01-02 [27W] REVOKED

- Effective date: 20021022

2002-11-15 [REG CH PL] PATENT CEASED

2002-03-31 [PG25 AT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: AT

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20020331

2002-02-21 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20020221

- Year of fee payment: 8

2002-02-20 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: GB

- Payment date: 20020220

- Year of fee payment: 8

2002-02-11 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FR

- Payment date: 20020211

- Year of fee payment: 8

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

2001-08-01 [26] OPPOSITION FILED

- Opponent name: IPSEN INTERNATIONAL GMBH

- Effective date: 20010530

2001-02-16 [PGFP CH] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: CH

- Payment date: 20010216

- Year of fee payment: 7

2001-02-07 [PGFP AT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: AT

- Payment date: 20010207

- Year of fee payment: 7

2000-11-30 [PG25 SE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: SE

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20001130

2000-11-24 [ET] FR: TRANSLATION FILED

2000-10-11 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20000914

2000-10-05 [REF] CORRESPONDS TO:

- Document: DE 59508672 20001005

2000-08-31 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2000-08-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): AT CH DE FR GB IT LI SE

2000-08-30 [PG25 CH] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: CH

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20000830

2000-08-30 [PG25 LI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: LI

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20000830

2000-08-30 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20000830

2000-08-30 [REF] CORRESPONDS TO:

- Document: AT 195979 T 20000915

2000-03-15 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: ALD VACUUM TECHNOLOGIES AG

1998-11-25 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19981013

1996-07-03 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19960508

1996-01-03 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT CH DE FR GB IT LI SE