EP0992593A1 - Vorrichtung und Verfahren zum kontinuierlichen Abkühlen von Stahlblechen - Google Patents

Vorrichtung und Verfahren zum kontinuierlichen Abkühlen von Stahlblechen Download PDF

Info

Publication number
EP0992593A1
EP0992593A1 EP99870192A EP99870192A EP0992593A1 EP 0992593 A1 EP0992593 A1 EP 0992593A1 EP 99870192 A EP99870192 A EP 99870192A EP 99870192 A EP99870192 A EP 99870192A EP 0992593 A1 EP0992593 A1 EP 0992593A1
Authority
EP
European Patent Office
Prior art keywords
cooling
sheet
box
tank
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99870192A
Other languages
English (en)
French (fr)
Other versions
EP0992593B1 (de
Inventor
Pierre Simon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
Centre de Recherches Metallurgiques CRM ASBL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Publication of EP0992593A1 publication Critical patent/EP0992593A1/de
Application granted granted Critical
Publication of EP0992593B1 publication Critical patent/EP0992593B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/63—Quenching devices for bath quenching
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/562—Details
    • C21D9/565—Sealing arrangements

Definitions

  • the present invention relates to a continuous cooling process of a sheet metal steel, in particular during cooling with boiling water of a moving steel sheet continuously, and a device for its implementation.
  • the present invention takes place in the category of heat treatments involving cooling called “boiling water” or HOWAQ (hot water quenching), that is to say involving the immersion of the sheet in water at more than 95% of its boiling point expressed in ° C.
  • This type of cooling is carried out continuously by passing the sheet through a tank containing boiling water and makes it possible to obtain sheets having a homogeneous distribution of the mechanical properties throughout the sheet as well as a satisfactory flatness after cooling. .
  • HOWAQ hot water quenching
  • the first element relates to the obligation to limit oneself to a temperature of the sheet at the cooling tank outlet greater than 290-320 ° C, otherwise it can be seen that the cooled sheet has a flatness defect.
  • a sheet outlet temperature also high excludes the implementation of HOWAQ.
  • the second element is fundamentally inherent in the very principle of the exchange of heat that operates between the sheet and boiling water and for which we find that we reach quickly a maximum value of the cooling rate.
  • this value is also significantly lower than the speeds currently required by the evolution of heat treatments.
  • the cooling rate HOWAQ maximum is around 60 ° C / s for a 0.8 mm thick sheet, so that we would like to reach more than 100 ° C / s, or even 500 to 1000 ° C / s for this range of products.
  • the present invention provides a solution to the limitations of use in the context of boiling water cooling or HOWAQ and, significant economic advantage, its implementation makes it easy to adapt an existing HOWAQ industrial line to extend the range of sheets that can be processed there.
  • the invention makes it possible to carry out what is usually called in technique a “full quench ", that is to say to arrive at an outlet temperature of the sheet of approximately 100 ° C. and this with speeds of the order of 500 ° C / s to 1000 ° C / s for 0.8 mm thickness.
  • the goal is therefore to modify the conditions of execution of a cooling of the type HOWAQ usual in order to obtain a temperature of exit of the sheet more low and higher cooling intensities, while retaining the advantage a continuous cooling treatment of the sheet which can be implemented on an existing HOWAQ installation adapted at low cost.
  • the basic idea is to install a cooling box of the "black boxes" type, that is to say boxes comprising devices, such as sprinklers, which project fluid under pressure towards the surface of the sheet to be cooled during the passage of said sheet in the box in question.
  • Figure 1 is an overview of a HOWAQ type cooling installation
  • Figure 2 is a partial view relating to the part directly concerned by the present invention.
  • the sheet (1) comes out of an enclosure (2) relating to the previous treatment of the sheet (1) under a particular atmosphere and is introduced via the airlock (3), comprising for example in the exposed case 2 pairs of rollers, in a tank (4) containing boiling water (5).
  • the sheet (1) plunges into the tank (4), passes over a system of bottom return rollers (6) mounted on a cradle (7) which is movable vertically in the tank (4) to allow modification of the passage time of the sheet (1) in the water (5), and finally, the sheet (1) leaves the tank (4) via an outlet airlock (8) and is directed to other stages (14) of its development.
  • the proposed solution is to arrange the cooling box so that obtain identical levels of coolants in the tank and the box. Due to the lack of static pressure difference between the inside and the outside of the separate cooling box, there are practically negligible leaks to HOWAQ tank.
  • the process of continuous cooling of a steel sheet (1), object of the present invention, said sheet (1) being in continuous travel and at a temperature between 680 ° C and 850 ° C, is essentially characterized in that the sheet metal (1) is cooled by passing through a tank (4) containing a water bath (5) maintained at a temperature greater than 95% of its boiling point expressed in ° C, as applied to the sheet (1) a second cooling operation distinct from the first and which takes place in the final phase of the first, in what we use for this second cooling operation a separate cooling device (9), hereinafter called cooling box, in that we pass the sheet (1) in the box cooling (9), in that said cooling box (9) is constructed and in that that it is placed in the tank (4) so that the sheet (1) enters said box cooling (9) at a point below the level (10) of the water (5) in the tank (4) and in that a fluid is projected towards the sheet (1) during its passage inside said cooling box (9).
  • a separate cooling device (9), hereinafter called cooling box in that we pass the sheet (1) in the box cooling
  • one projects in the cooling box (9) towards the sheet (1) a fluid whose temperature is included between 20 and 100 ° C.
  • water is used as fluid sprayed into the cooling box (9).
  • the temperature of the steel sheet (1) at the inlet of the cooling box (9) is varies the temperature of the steel sheet (1) at the inlet of the cooling box (9) by modifying the immersion time of said sheet (1) in the water (5) of the tank (4) before that it does not enter the cooling box (9); preferably, we modify the length of the path traveled by said sheet (1) in the tank (4) by moving vertically the cradle (7) supporting the bottom return rollers (6).
  • the present invention also relates to a device for implementing the modalities of the process of the present invention.
  • the cooling device for implementing the cooling process in continuous of a steel sheet (1) in continuous travel, object of the present invention comprising a tank (4) filled with water (5) at a temperature above 95% of its boiling point expressed in ° C in which the sheet (1) plunges and then rises after passing over bottom return rollers (6), is essentially characterized by what it includes a cooling means (9), called cooling box, arranged on the path followed by the sheet (1) so that it enters the box cooling (9) below the free surface (10) of the water (5) in the tank (4).
  • a cooling means (9), called cooling box arranged on the path followed by the sheet (1) so that it enters the box cooling (9) below the free surface (10) of the water (5) in the tank (4).
  • the box cooling (9) is a box supplied with pressurized fluid and provided elements for projecting a fluid towards the sheet metal (1), for example holes or nozzles, in a density of between 400 and 2,000 elements per m2 of active surface in projection.
  • the cooling box (9) is provided with means (12) and (13) intended both to limit the leakage towards the tank (4) of the fluid projected towards the sheet (1) inside the box cooling (9) than to prevent the entry of water from the tank (4) into the box cooling (9):
  • the circuit supplying the cooling box comprises systems capable to regulate the working conditions of the sprayed fluid, preferably its temperature.
  • a cradle (7) supports the bottom return rollers (6) and is movable vertically, allowing in this way to modify the passage time of the sheet (1) in the tank (4)
  • airlocks (3) and (8) are disposed respectively at the inlet and at the outlet of the steel sheet (1) respectively in and out of the enclosure comprising the tank (4) so isolate the enclosure containing the tank (4) from the atmospheres prevailing in the enclosures respectively (2) from which the sheet metal (1) and (14) to which it is originating directs after cooling.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP99870192A 1998-10-01 1999-09-21 Vorrichtung und Verfahren zum kontinuierlichen Abkühlen von Stahlblechen Expired - Lifetime EP0992593B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9800710 1998-10-01
BE9800710A BE1012215A3 (fr) 1998-10-01 1998-10-01 Procede de refroidissement en continu d'une tole en acier et dispositif pour sa mise en oeuvre.

Publications (2)

Publication Number Publication Date
EP0992593A1 true EP0992593A1 (de) 2000-04-12
EP0992593B1 EP0992593B1 (de) 2004-05-26

Family

ID=3891446

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99870192A Expired - Lifetime EP0992593B1 (de) 1998-10-01 1999-09-21 Vorrichtung und Verfahren zum kontinuierlichen Abkühlen von Stahlblechen

Country Status (5)

Country Link
EP (1) EP0992593B1 (de)
AT (1) ATE267882T1 (de)
BE (1) BE1012215A3 (de)
DE (1) DE69917553T2 (de)
ES (1) ES2221348T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1300478A1 (de) * 2001-10-05 2003-04-09 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Verfahren und Vorrichtung zum beschleunigten Abkühlen im Durchlaufglühverfahren

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021024021A1 (en) * 2019-08-06 2021-02-11 Arcelormittal Device for cooling a steel strip

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU81187A1 (fr) * 1979-04-24 1980-12-16 Centre Rech Metallurgique Perfectionnements aux procedes de traitement thermique de toles metalliques
BE887507A (fr) * 1981-02-12 1981-06-01 Centre Rech Metallurgique Perfectionnements aux procedes de traitement thermique en continu de toles d'acier
JPS58120747A (ja) * 1982-01-13 1983-07-18 Nippon Steel Corp 加工用冷延鋼帯および高張力冷延鋼帯の連続熱処理設備
EP0086331A1 (de) * 1982-01-13 1983-08-24 Nippon Steel Corporation Kontinuierliche Wärmebehandlungslinie für Bänder oder Bleche aus weichen und aus hochfesten Stählen
EP0195659A2 (de) * 1985-03-22 1986-09-24 Kawasaki Steel Corporation Verfahren und Vorrichtung zum Kühlen von Stahlband in einer kontinuierlichen Glühanlage
EP0195658A2 (de) * 1985-03-22 1986-09-24 Kawasaki Steel Corporation Verfahren und Vorrichtung zum Kühlen von Stahlband

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU81187A1 (fr) * 1979-04-24 1980-12-16 Centre Rech Metallurgique Perfectionnements aux procedes de traitement thermique de toles metalliques
BE887507A (fr) * 1981-02-12 1981-06-01 Centre Rech Metallurgique Perfectionnements aux procedes de traitement thermique en continu de toles d'acier
JPS58120747A (ja) * 1982-01-13 1983-07-18 Nippon Steel Corp 加工用冷延鋼帯および高張力冷延鋼帯の連続熱処理設備
EP0086331A1 (de) * 1982-01-13 1983-08-24 Nippon Steel Corporation Kontinuierliche Wärmebehandlungslinie für Bänder oder Bleche aus weichen und aus hochfesten Stählen
EP0195659A2 (de) * 1985-03-22 1986-09-24 Kawasaki Steel Corporation Verfahren und Vorrichtung zum Kühlen von Stahlband in einer kontinuierlichen Glühanlage
EP0195658A2 (de) * 1985-03-22 1986-09-24 Kawasaki Steel Corporation Verfahren und Vorrichtung zum Kühlen von Stahlband

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 225 (C - 189) 6 October 1983 (1983-10-06) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1300478A1 (de) * 2001-10-05 2003-04-09 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Verfahren und Vorrichtung zum beschleunigten Abkühlen im Durchlaufglühverfahren
BE1014418A3 (fr) * 2001-10-05 2003-10-07 Cockerill Rech & Dev Procede et dispositif de refroidissement accelere en recuit continu.

Also Published As

Publication number Publication date
DE69917553D1 (de) 2004-07-01
BE1012215A3 (fr) 2000-07-04
EP0992593B1 (de) 2004-05-26
ES2221348T3 (es) 2004-12-16
DE69917553T2 (de) 2005-06-30
ATE267882T1 (de) 2004-06-15

Similar Documents

Publication Publication Date Title
US6874344B1 (en) Cold rolling method
RU2330737C1 (ru) Способ и устройство для охлаждения и/или смазки валков, и/или прокатываемого материала
KR102479197B1 (ko) 압연 후에 금속 스트립을 담금질하는 시스템 및 방법
BE1012215A3 (fr) Procede de refroidissement en continu d'une tole en acier et dispositif pour sa mise en oeuvre.
WO2009118466A1 (fr) Procédé de revêtement d'une bande métallique et installation de mise en oeuvre du procédé
US3277686A (en) Apparatus for obtaining improved finishes on double reduced material
FR2816637A1 (fr) Installation de revetement au trempe d'une bande metallique
EP0879897B1 (de) Verfahren zum Durchlaufglühen von Metallsubstraten
FR2738577A1 (fr) Dispositif de refroidissement d'un produit lamine
CA1220699A (fr) Procede de refroidissement module minimisant les deformations des produits plats metallurgiques
EP1339891A1 (de) Verfahren und vorrichtung für heissverfahren und kontinuierliches tauchbeschichten eines metallstreifens
RU2117547C1 (ru) Способ прямого литья расплавленного металла в непрерывную полосу и устройство для его осуществления
EP0126696B1 (de) Verfahren zur kontinuierlichen Herstellung von überaltertem Stahlband, beschichtet mit Zink oder mit einer Aluminium-Zink-Legierung
Chakraborty et al. Effect of tramp oil ingress in cold rolling oil bath leading to white spot defect on CRCA at Tinplate mill
FR2833871A1 (fr) Procede et installation de fabrication de bandes metalliques a partir de bandes coulees directement a partir de metal liquide
FR2471421A1 (fr) Procede de revetement en continu de toles metalliques
Short et al. A review of some defects appearing on anodized aluminium
JP2007061852A (ja) 冷延金属板の製造方法
KR200371636Y1 (ko) 아연도금조 내부의 롤러표면 이물질 제거장치
Gabániová Surface Chemistry-Based Surface Defects Situated on Steel Strips Edges
JP2020158875A (ja) 合金化溶融亜鉛めっき鋼板の製造設備および合金化溶融亜鉛めっき鋼板の製造方法
JP3348825B2 (ja) 冷間圧延金属帯のウエット調質圧延方法および設備列
KR20000039827A (ko) 회전롤 자동 연삭장치
BE1025125B1 (fr) Essuyeur sans contact et installation industrielle comportant un tel essuyeur
BE1015409A3 (fr) Controle de l'epaisseur d'une couche liquide a la surface d'un objet allonge emergeant d'un bain.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

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

AX Request for extension of the european patent

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

17P Request for examination filed

Effective date: 20000522

AKX Designation fees paid

Free format text: AT BE DE FR GB IT NL

RBV Designated contracting states (corrected)

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

17Q First examination report despatched

Effective date: 20030310

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CENTRE DE RECHERCHES METALLURGIQUES - CENTRUM VOOR

AK Designated contracting states

Kind code of ref document: B1

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

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

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

Effective date: 20040526

Ref country code: FI

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

Effective date: 20040526

Ref country code: CY

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

Effective date: 20040526

Ref country code: AT

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

Effective date: 20040526

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: FRENCH

REF Corresponds to:

Ref document number: 69917553

Country of ref document: DE

Date of ref document: 20040701

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040728

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

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

Effective date: 20040826

Ref country code: GR

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

Effective date: 20040826

Ref country code: DK

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

Effective date: 20040826

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

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

Effective date: 20040930

Ref country code: LI

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

Effective date: 20040930

Ref country code: CH

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

Effective date: 20040930

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2221348

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed

Effective date: 20050301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

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

Effective date: 20041026

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20140924

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20140924

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20140922

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20140922

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

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

Effective date: 20150921

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20150921

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20151001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20160531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

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

Effective date: 20150921

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

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

Effective date: 20150930

Ref country code: NL

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

Effective date: 20151001

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20180828

Year of fee payment: 20

Ref country code: DE

Payment date: 20180821

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20180822

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20181001

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69917553

Country of ref document: DE

REG Reference to a national code

Ref country code: BE

Ref legal event code: MK

Effective date: 20190921

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20200723

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20190922