EP1223229B1 - Alliage à base de nickel pour la coulée des pièces en monocristal - Google Patents

Alliage à base de nickel pour la coulée des pièces en monocristal Download PDF

Info

Publication number
EP1223229B1
EP1223229B1 EP01129921A EP01129921A EP1223229B1 EP 1223229 B1 EP1223229 B1 EP 1223229B1 EP 01129921 A EP01129921 A EP 01129921A EP 01129921 A EP01129921 A EP 01129921A EP 1223229 B1 EP1223229 B1 EP 1223229B1
Authority
EP
European Patent Office
Prior art keywords
weight
proportion
amount
based alloy
tungsten
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.)
Expired - Lifetime
Application number
EP01129921A
Other languages
German (de)
English (en)
Other versions
EP1223229A1 (fr
Inventor
Uwe Prof. Dr. Glatzel
Thomas Dr. Mack
Silke Dr. Wöllmer
Jürgen Dr. Wortmann
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.)
MTU Aero Engines AG
Original Assignee
MTU Aero Engines GmbH
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 MTU Aero Engines GmbH filed Critical MTU Aero Engines GmbH
Publication of EP1223229A1 publication Critical patent/EP1223229A1/fr
Application granted granted Critical
Publication of EP1223229B1 publication Critical patent/EP1223229B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/03—Alloys based on nickel or cobalt based on nickel
    • C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
    • C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
    • C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%

Definitions

  • the invention relates to a nickel-based alloy for the casting production of monocrystalline solidified components, according to the preamble of claim 1.
  • Alloys of this type belong to a group of so-called superalloys which can be used under high temperatures and under high mechanical stresses and are therefore used in particular as turbine blade materials in gas turbines.
  • High bypass ratio engines are equipped with a reduction gearbox connected between the fan on one side and the low pressure compressor and the low pressure turbine on the other side.
  • the transmission allows the fan to operate in the optimum range at slow speeds, and has the potential to operate the compressor and turbine at higher speeds and therefore higher pressure than conventional turbines.
  • the higher circumferential speeds also increase the mechanical loads of the blading and the discs of the low-pressure turbine.
  • Second and third generation Ni base alloys for single crystalline devices contain about 3% by weight and 6% by weight, respectively, of the refractory element rhenium and have better creep properties than corresponding first generation alloys without Re content.
  • the refractory element Re has a different effect on the properties of superalloys. Re has a large atomic radius, diffuses very slowly and seeps into the matrix. In addition to the effect of Solid solution hardening of the matrix, the rhenium atoms tend to form clusters that impede a dislocation movement. Tungsten contributes significantly to solid solution hardening.
  • the W content affects the distribution of the Re on the matrix and the ⁇ '-excretion phase.
  • the alloying element tantalum (Ta) contributes to solid solution hardening and improves the cyclic oxidation behavior, it is primarily added to W and Re-containing Ni base alloys in order to counteract the so-called Freckle formation in directional solidification.
  • Negative properties of Ta strong increase in density; it promotes unwanted TCP phase formation and increases the gamma prime solution temperature.
  • the increase in creep strength is accompanied by a concomitant increase in density down to 9 g cm -3 for certain 6 wt% Re alloys.
  • the density can be lowered down to 8 g cm -3 .
  • Ni-base alloys with a high specific gravity are only conditionally suitable for use in modern, high-speed aircraft turbines.
  • a low-density Re-free superalloy is known, for example, from US Pat. No. 4,721,540, the trade name of this material being "CMSX-6".
  • CMSX-6 the trade name of this material.
  • this alloy apart from the mechanical advantage of a relatively low density of 7.98 g cm -3 , this alloy also has disadvantages such as a small heat treatment window and a high recrystallization tendency.
  • the object of the invention is to provide nickel Besirison isten for the casting production of monocrystalline solidified components that allow by optimizing the proportions of rhenium and tungsten particularly favorable material and thus component properties, such as low density, high mechanical strength including low creep as well as high temperature resistance.
  • component properties such as low density, high mechanical strength including low creep as well as high temperature resistance.
  • easy castability and favorable heat-aging properties of the alloy are required.
  • the rhenium content should be at least 2.3 to at most 2.6 percent by weight, the weight ratio of tungsten to rhenium should be at least 1 and not more than 1.6.
  • the respective alloy always contains more tungsten than rhenium and this in a defined ratio range.
  • This material which internally as “L judges in E k ristall 94" is designated (LEK94), thus has the following composition in weight percent al from 6.2 to 6.8 Co from 7.2 to 7.8 Cr from 5.8 to 6.4 Hf from 0.05 to 0.15 Not a word from 1.7 to 2.3 re from 2.3 to 2.6 Ta from 2.0 to 2.6 Ti from 0.9 to 1.1 W from 3.0 to 3.7 Ni Rest including impurities
  • any impurities in the form of further elements or compounds are here combined with the Ni content.
  • the proportions of the abovementioned elements may be e.g. two digits behind the decimal point (one hundredth of a percent) have deviations that are obvious to the person skilled in the art and have no relevant influence on the material properties.
  • This special material “LEK94” is a high-alloy single-crystal alloy of low density, which was developed for use in high-speed turbines. To optimize the detrimental requirements of high temperature resistance and low density, the alloy contents of the elements Re and W were varied.
  • LEK94 is a Re-containing Enkristallleg réelle low density in the range from 8.1 to 8.3 g cm -3 and high temperature strength. Good castability and a significantly large heat treatment window characterize this material.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (2)

  1. Alliage à base de nickel pour la coulée de pièces solidifiées de façon monocristalline, en particulier de pales pour des étages à grande vitesse de turbines à gaz, comportant une fraction de rhénium (Re) d'au moins 2,3 à au plus 2,6 % en poids, une fraction de tungstène (W), dont le rapport pondéral avec la fraction de rhénium (Re) est d'au moins 1,1 à au plus 1,6, une fraction d'aluminium (Al) d'au moins 6,2 à au plus 6,8 % en poids, une fraction de cobalt (Co) d'au moins 7,2 à au plus 7,8 % en poids, une fraction de chrome (Cr) d'au moins 5,8 à au plus 6,4 % en poids, une fraction d'hafnium (Hf) d'au moins 0,05 à au plus 0,15 % en poids, une fraction de molybdène (Mo) d'au moins 1,7 à au plus 2,3 % en poids, une fraction de tantale (Ta) d'au moins 2,0 à au plus 2,6 % en poids et une fraction de titane (Ti) d'au moins 0,9 à au plus 1,1 % en poids, le reste étant du nickel et des impuretés.
  2. Alliage à base de nickel selon la revendication 1, comportant une fraction de tungstène (W) d'au moins 3,0 à au plus 3,7 % en poids.
EP01129921A 2001-01-10 2001-12-15 Alliage à base de nickel pour la coulée des pièces en monocristal Expired - Lifetime EP1223229B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10100790A DE10100790C2 (de) 2001-01-10 2001-01-10 Nickel-Basislegierung für die gießtechnische Herstellung einkristallin erstarrter Bauteile
DE10100790 2001-01-10

Publications (2)

Publication Number Publication Date
EP1223229A1 EP1223229A1 (fr) 2002-07-17
EP1223229B1 true EP1223229B1 (fr) 2006-02-22

Family

ID=7670118

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01129921A Expired - Lifetime EP1223229B1 (fr) 2001-01-10 2001-12-15 Alliage à base de nickel pour la coulée des pièces en monocristal

Country Status (7)

Country Link
US (2) US6936116B2 (fr)
EP (1) EP1223229B1 (fr)
JP (1) JP4250363B2 (fr)
AT (1) ATE318329T1 (fr)
CA (1) CA2366997C (fr)
DE (2) DE10100790C2 (fr)
ES (1) ES2256147T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10339595A1 (de) * 2003-08-26 2005-04-07 Siemens Ag Verfahren zur Vorhersage und Steuerung der Vergießbarkeit von Flüssigstahl
US6969431B2 (en) 2003-08-29 2005-11-29 Honeywell International, Inc. High temperature powder metallurgy superalloy with enhanced fatigue and creep resistance
US7453071B2 (en) * 2006-03-29 2008-11-18 Asml Netherlands B.V. Contamination barrier and lithographic apparatus comprising same
JP5299899B2 (ja) * 2006-03-31 2013-09-25 独立行政法人物質・材料研究機構 Ｎｉ基超合金及びその製造方法
US8216509B2 (en) * 2009-02-05 2012-07-10 Honeywell International Inc. Nickel-base superalloys
US20160214350A1 (en) 2012-08-20 2016-07-28 Pratt & Whitney Canada Corp. Oxidation-Resistant Coated Superalloy

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4388124A (en) * 1979-04-27 1983-06-14 General Electric Company Cyclic oxidation-hot corrosion resistant nickel-base superalloys
US4764225A (en) * 1979-05-29 1988-08-16 Howmet Corporation Alloys for high temperature applications
JPS5610881A (en) * 1980-07-02 1981-02-03 Kubota Ltd Pipe joint
US4518442A (en) * 1981-11-27 1985-05-21 United Technologies Corporation Method of producing columnar crystal superalloy material with controlled orientation and product
US4574015A (en) * 1983-12-27 1986-03-04 United Technologies Corporation Nickle base superalloy articles and method for making
US4721540A (en) * 1984-12-04 1988-01-26 Cannon Muskegon Corporation Low density single crystal super alloy
EP0207874B1 (fr) * 1985-05-09 1991-12-27 United Technologies Corporation Revêtements protecteurs pour superalliages, bien adaptés aux substrats
CA1291350C (fr) * 1986-04-03 1991-10-29 United Technologies Corporation Articles monocristallins a anisotropie reduite
CA1315572C (fr) * 1986-05-13 1993-04-06 Xuan Nguyen-Dinh Materiaux monocristallins a phase stable
US4781772A (en) * 1988-02-22 1988-11-01 Inco Alloys International, Inc. ODS alloy having intermediate high temperature strength
US5240518A (en) * 1990-09-05 1993-08-31 General Electric Company Single crystal, environmentally-resistant gas turbine shroud
JP2729531B2 (ja) * 1990-09-14 1998-03-18 株式会社日立製作所 ガスタービンブレード及びその製造方法並びにガスタービン
US5270123A (en) * 1992-03-05 1993-12-14 General Electric Company Nickel-base superalloy and article with high temperature strength and improved stability
WO1993024683A1 (fr) * 1992-05-28 1993-12-09 United Technologies Corporation Superalliages de fonderie a base de monocristal resistant a l'oxydation
JP3164972B2 (ja) * 1993-08-06 2001-05-14 株式会社日立製作所 ガスタービン用動翼及びその製造法とそれを用いたガスタービン
JPH09170402A (ja) * 1995-12-20 1997-06-30 Hitachi Ltd ガスタービン用ノズル及びその製造法とそれを用いたガスタービン
EP1049562B1 (fr) * 1997-10-27 2005-02-16 Siemens Westinghouse Power Corporation Pales de turbine fabriquees a partir de multiples segments coules en superalliage monocristallin
JPH11310839A (ja) * 1998-04-28 1999-11-09 Hitachi Ltd 高強度Ｎｉ基超合金方向性凝固鋳物
JP2000144289A (ja) * 1998-11-02 2000-05-26 United Technol Corp <Utc> 安定に熱処理可能なニッケル基超合金単結晶物体及び組成物並びにガスタービン用部品
JP5073905B2 (ja) * 2000-02-29 2012-11-14 ゼネラル・エレクトリック・カンパニイ ニッケル基超合金及び該超合金から製造したタービン部品

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Superalloys 1996", 1996, TMS *

Also Published As

Publication number Publication date
CA2366997C (fr) 2013-07-02
JP2002302724A (ja) 2002-10-18
EP1223229A1 (fr) 2002-07-17
US20050254991A1 (en) 2005-11-17
US20020182100A1 (en) 2002-12-05
US6936116B2 (en) 2005-08-30
DE10100790C2 (de) 2003-07-03
CA2366997A1 (fr) 2002-07-10
ES2256147T3 (es) 2006-07-16
ATE318329T1 (de) 2006-03-15
JP4250363B2 (ja) 2009-04-08
DE50108994D1 (de) 2006-04-27
DE10100790A1 (de) 2002-07-18

Similar Documents

Publication Publication Date Title
EP0914484B1 (fr) Superalliage a base de nickel
DE3023576C2 (fr)
EP2163656B1 (fr) Support d&#39;enregistrement d&#39;informations optiques, substrat et procédé de fabrication pour le support d&#39;enregistrement d&#39;informations optiques
CH701641B1 (de) Nickelbasissuperlegierungen und Gussartikel aus solchen Legierungen, insbesondere für Komponenten von Gasturbinentriebwerken.
EP1204776B1 (fr) Piece resistant a des temperatures elevees et son procede de production
DE60303971T3 (de) Hochfeste Superlegierung auf Nickelbasis und Gasturbinenschaufeln
DE2415074C2 (de) Verwendung einer Superlegierung auf Nickelbasis zur Herstellung von Gasturbinenteilen
DE3234083A1 (de) Waermebehandelter einkristall-gegenstand aus einer superlegierung auf nickelbasis
DE60211297T2 (de) Hochfeste heisskorrosions- und oxidationsbeständige, gerichtet erstarrte Superlegierung auf Nickelbasis und Gegenstände
EP1319729A1 (fr) Pièce résistante à des températures élevées réalisé en superalliage polycristallin ou monocristallin à base de nickel
DE19624055A1 (de) Nickel-Basis-Superlegierung
DE60203562T2 (de) Monokristalline Superlegierung auf Nickelbasis
DE112013003971T5 (de) Nickelbasierte einkristalline Superlegierung
DE1921359C3 (de) Verfahren zur Erhöhung der Duktilität bei hohen Temperaturen von Gußlegierungen auf Nickelbasis
EP2196550B1 (fr) Matériau à base de NiAl, résistant aux températures élevées et à l&#39;oxydation
EP1223229B1 (fr) Alliage à base de nickel pour la coulée des pièces en monocristal
EP3091095B1 (fr) Superalliage à base de nickel sans rhénium à faible densité
DE1922314A1 (de) Verfahren zur Verguetung von Legierungen
DE2830946A1 (de) Superlegierung auf nickelbasis und gegenstand daraus
DE2821524C2 (de) Verfahren zur Wärmebehandlung eines einkristallinen Körpers aus einer Nickel-Superlegierung
EP3133178B1 (fr) Superalliage a base de nickel optimise
EP2354261A1 (fr) Superalliage à base de nickel ayant un comportement de dégradation amélioré
WO2012041276A2 (fr) Alliage tial résistant à la chaleur
DE2949158A1 (de) Waermebehandeltes nickelbasissuperlegierungserzeugnis, verfahren zum herstellen eines einkristallnickelbasissuperlegierungserzeugnisses sowie zwischenstufeneinkristallerzeugnis
JPH05209251A (ja) 高剛性Ｔｉ合金とその製造方法

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 TR

AX Request for extension of the european patent

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

17P Request for examination filed

Effective date: 20020814

AKX Designation fees paid

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

17Q First examination report despatched

Effective date: 20050215

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

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 TR

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

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: 20060222

Ref country code: NL

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: 20060222

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: 20060222

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: NV

Representative=s name: ISLER & PEDRAZZINI AG

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50108994

Country of ref document: DE

Date of ref document: 20060427

Kind code of ref document: P

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

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: 20060522

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

Effective date: 20060609

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2256147

Country of ref document: ES

Kind code of ref document: T3

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060724

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
ET Fr: translation filed
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

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: 20061231

Ref country code: BE

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

Effective date: 20061231

26N No opposition filed

Effective date: 20061123

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: ISLER & PEDRAZZINI AG;POSTFACH 1772;8027 ZUERICH (CH)

BERE Be: lapsed

Owner name: MTU AERO ENGINES G.M.B.H.

Effective date: 20061231

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

Ref country code: AT

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

Effective date: 20061215

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

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: 20060523

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

Ref country code: TR

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: 20060222

Ref country code: LU

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

Effective date: 20061215

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

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: 20060222

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

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

Ref country code: ES

Payment date: 20180105

Year of fee payment: 17

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

Ref country code: SE

Payment date: 20181219

Year of fee payment: 18

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

Ref country code: FR

Payment date: 20181218

Year of fee payment: 18

Ref country code: GB

Payment date: 20181219

Year of fee payment: 18

Ref country code: IT

Payment date: 20181218

Year of fee payment: 18

Ref country code: CH

Payment date: 20181219

Year of fee payment: 18

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

Ref country code: DE

Payment date: 20181220

Year of fee payment: 18

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20200203

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 NON-PAYMENT OF DUE FEES

Effective date: 20181216

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50108994

Country of ref document: DE

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Effective date: 20191215

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

Ref country code: IT

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

Effective date: 20191215

Ref country code: SE

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

Effective date: 20191216

Ref country code: GB

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

Effective date: 20191215

Ref country code: DE

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

Effective date: 20200701

Ref country code: FR

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

Effective date: 20191231

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

Ref country code: LI

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

Effective date: 20191231

Ref country code: CH

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

Effective date: 20191231