EP0922919B1 - Method for controlling the gas circulation rate in a timber drying oven - Google Patents

Method for controlling the gas circulation rate in a timber drying oven Download PDF

Info

Publication number
EP0922919B1
EP0922919B1 EP98660058A EP98660058A EP0922919B1 EP 0922919 B1 EP0922919 B1 EP 0922919B1 EP 98660058 A EP98660058 A EP 98660058A EP 98660058 A EP98660058 A EP 98660058A EP 0922919 B1 EP0922919 B1 EP 0922919B1
Authority
EP
European Patent Office
Prior art keywords
gas circulation
gas
timber
change
measured
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
EP98660058A
Other languages
German (de)
French (fr)
Other versions
EP0922919A1 (en
Inventor
Tero Lallukka
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.)
Stellac Oy
Original Assignee
Stellac Oy
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8550089&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0922919(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Stellac Oy filed Critical Stellac Oy
Publication of EP0922919A1 publication Critical patent/EP0922919A1/en
Application granted granted Critical
Publication of EP0922919B1 publication Critical patent/EP0922919B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
    • F26B2210/16—Wood, e.g. lumber, timber

Definitions

  • the present invention relates to a procedure as defined in the preamble of claim 1 for the regulation of gas circulation in a timber treatment oven.
  • a procedure is known, for example, from EP-A-0 142 071.
  • regulation of the process is mainly effected by measuring the humidity and temperature of the gas at one point or by measuring the degree of drying or heating of the timber. Based on these data, the temperature and humidity of the gas is then adjusted.
  • the fan can be somewhat adjusted mainly empirically to regulate the intensity of the gas circulation. Generally, however, a constant intensity of gas circulation is maintained throughout the treatment process.
  • the main drawback with prior-art technology is energy consumption.
  • the energy needed for the drying and heat treatment and the electric energy required by the fan motor make up a substantial part of the total costs of the treatment, so reducing this energy consumption is of a decisive importance for economic utilisation of the processes in question.
  • the proportion of electric energy is 20 - 50 % of the total energy requirement and the heating energy is obtained from a cheaper source, such as fuel oil, wood chips etc., the energy consumed by the fan forms a significant part of the total costs.
  • the object of the present invention is to eliminate the drawbacks mentioned above.
  • a specific object of the present invention is to produce a new type of procedure for the regulation of gas circulation that allows the energy consumption of the fan in timber treatment ovens to be significantly reduced.
  • a timber treatment or drying oven which comprises a drying space for the timber to be treated, a fan designed to produce gas circulation through the timber and a heating unit for the heating of the gas to be circulated.
  • the change in the condition of gas circulation is measured substantially continuously throughout the treatment process at two points in the gas circulation on different sides of the timber being treated and the intensity of gas circulation is continuously adjusted as necessary in view of the measured change.
  • the changes of condition measured from the gas circulation may be e.g. changes in the humidity, temperature or electric conductivity of the gas or a pressure difference or changes in gas composition.
  • the intensity of the gas circulation can also be adjusted continuously.
  • the procedure of the invention has significant advantages.
  • the gas circulation is regulated by the method of the invention, the consumption of fan energy can be reduced by amounts varying between 10 - 50 % in different treatment processes.
  • the energy saving achieved in an oven of standard dimensions may be as large as $ 100.000 per annum as compared with empirical frequency converter regulation.
  • the heat treatment oven illustrated by the drawing comprises a closed drying space 1, where the timber 2 has been piled in a way that leaves enough space among the timber to permit circulation of gas, such as air.
  • the heat treatment oven has a fan 3 to effect gas circulation and a heating unit 4, i.e. a suitable heat exchanger for heating the air being circulated.
  • the heat treatment oven also comprises an outlet valve 5 for letting out some of the gas flow from the gas circulation and a replacement valve 6 for the intake of replacing gas into the gas circulation, as well as dampening devices 7 for increasing the humidity of the gas circulation when necessary.
  • the heat treatment oven is provided with temperature or humidity sensors 8 and 9, placed in the gas circulation on either side of the timber 2.
  • the procedure of the invention is applied as follows.
  • gas is circulated through the timber by means of the fan 3, simultaneously heating the gas by means of the heating unit 4.
  • the gas flows from the fan to the heating unit, where it is heated rapidly while its relative humidity falls at the same time.
  • the warm gas flows among the timber 2, where it is cooled as it heats the timber and humidity is transferred from the timber into the gas.
  • the gas cools off and becomes more humid.
  • the temperature difference obtained from the sensors 8 and 9 is too small, in other words, it is unnecessary to use such an intensive air flow to achieve a sufficiently uniform transfer of the required heat energy from the heating unit 4 to the timber.
  • the sensors 8 and 9 can be used to measure humidity, in which case it will be discovered that the difference between the humidity values measured at the measuring points is too small, which means that, due to an excessive intensity of the gas flow, too little humidity is transferred from the timber to the gas flow. In this situation, by reducing the speed of rotation of the fan 3, the gas flow as well as the energy consumption of the fan can be reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

Procedure for the regulation of gas circulation in a timber treatment or drying oven, said oven comprising a drying space (1) for timber (2), a fan (3) designed to produce gas circulation in the drying space and a heating unit (4) for heating the gas. According to the invention, the change in the condition of gas circulation is measured across a certain distance in the gas circulation and the intensity of gas circulation is adjusted as necessary in view of the measured change. <IMAGE>

Description

  • The present invention relates to a procedure as defined in the preamble of claim 1 for the regulation of gas circulation in a timber treatment oven. Such a procedure is known, for example, from EP-A-0 142 071.
  • In both heat treatment, warm air drying, hot drying and hot air drying of timber, large treatment chambers are used in which the timber to be treated is piled in a way that leaves enough space among the timber to permit circulation of gas, such as air, in the chamber. In the closed chamber, the gas is circulated by means of fans past electric resistors so that the air heated by the resistors causes heating or drying of the timber. When hot gas is effectively circulated in the oven, the heat can be uniformly distributed in the entire timber lot being treated.
  • At present, regulation of the process is mainly effected by measuring the humidity and temperature of the gas at one point or by measuring the degree of drying or heating of the timber. Based on these data, the temperature and humidity of the gas is then adjusted. In addition, the fan can be somewhat adjusted mainly empirically to regulate the intensity of the gas circulation. Generally, however, a constant intensity of gas circulation is maintained throughout the treatment process.
  • It is also known in prior art to use two different sensors to measure temperatures and to control the fan. In EP 0 142 071 the direction of gas circulation is determined with the temperature or humidity measurements. However the speed or intensity of gas circulation is kept constant. In WO 97/08504 drying of wood is devided into five different phases and the flow of circulation air is kept constant except in the last phase, where, in order to save energy, the flow of circulation air can be reduced. In US 4,922,624 a temperature drop in a certain zone is measured and the circulating air flow is reduced in that zone to a minimum to prevent further drying of wood in that zone when certain temperature drop is measured.
  • The main drawback with prior-art technology is energy consumption. The energy needed for the drying and heat treatment and the electric energy required by the fan motor make up a substantial part of the total costs of the treatment, so reducing this energy consumption is of a decisive importance for economic utilisation of the processes in question. As the proportion of electric energy is 20 - 50 % of the total energy requirement and the heating energy is obtained from a cheaper source, such as fuel oil, wood chips etc., the energy consumed by the fan forms a significant part of the total costs.
  • The object of the present invention is to eliminate the drawbacks mentioned above. A specific object of the present invention is to produce a new type of procedure for the regulation of gas circulation that allows the energy consumption of the fan in timber treatment ovens to be significantly reduced.
  • As for the features characteristic of the invention, reference is made to claim 1.
  • In the procedure of the invention, a timber treatment or drying oven is used, which comprises a drying space for the timber to be treated, a fan designed to produce gas circulation through the timber and a heating unit for the heating of the gas to be circulated.
  • Accordion to the invention the change in the condition of gas circulation is measured substantially continuously throughout the treatment process at two points in the gas circulation on different sides of the timber being treated and the intensity of gas circulation is continuously adjusted as necessary in view of the measured change.
  • The changes of condition measured from the gas circulation may be e.g. changes in the humidity, temperature or electric conductivity of the gas or a pressure difference or changes in gas composition.
  • When the measurement of the change in the condition of gas circulation is implemented as continuous on-line measurement, the intensity of the gas circulation can also be adjusted continuously.
  • As compared with prior art, the procedure of the invention has significant advantages. In tests carried out, it has been established that, when the gas circulation is regulated by the method of the invention, the consumption of fan energy can be reduced by amounts varying between 10 - 50 % in different treatment processes. Thus, the energy saving achieved in an oven of standard dimensions may be as large as $ 100.000 per annum as compared with empirical frequency converter regulation.
  • In the following, the invention will be described in detail by referring to the attached drawing, which presents a diagram of a heat treatment oven in which the procedure of the invention can be applied.
  • The heat treatment oven illustrated by the drawing comprises a closed drying space 1, where the timber 2 has been piled in a way that leaves enough space among the timber to permit circulation of gas, such as air. In addition, the heat treatment oven has a fan 3 to effect gas circulation and a heating unit 4, i.e. a suitable heat exchanger for heating the air being circulated. The heat treatment oven also comprises an outlet valve 5 for letting out some of the gas flow from the gas circulation and a replacement valve 6 for the intake of replacing gas into the gas circulation, as well as dampening devices 7 for increasing the humidity of the gas circulation when necessary.
  • To implement the procedure of the invention, the heat treatment oven is provided with temperature or humidity sensors 8 and 9, placed in the gas circulation on either side of the timber 2.
  • The procedure of the invention is applied as follows. When the timber 2 is in the drying space 1, gas is circulated through the timber by means of the fan 3, simultaneously heating the gas by means of the heating unit 4. Thus, the gas flows from the fan to the heating unit, where it is heated rapidly while its relative humidity falls at the same time. From here, the warm gas flows among the timber 2, where it is cooled as it heats the timber and humidity is transferred from the timber into the gas. Thus, while passing through the timber, the gas cools off and becomes more humid.
  • If the gas flow is too intensive, then the temperature difference obtained from the sensors 8 and 9 is too small, in other words, it is unnecessary to use such an intensive air flow to achieve a sufficiently uniform transfer of the required heat energy from the heating unit 4 to the timber. On the other hand, in a corresponding case, the sensors 8 and 9 can be used to measure humidity, in which case it will be discovered that the difference between the humidity values measured at the measuring points is too small, which means that, due to an excessive intensity of the gas flow, too little humidity is transferred from the timber to the gas flow. In this situation, by reducing the speed of rotation of the fan 3, the gas flow as well as the energy consumption of the fan can be reduced.
  • On the other hand, when the gas flow is too small, the differences in the temperature or humidity as measured by the sensors 8 and 9 will be too large, from which it can be inferred that the process is inefficient and needs a more intensive gas flow.
  • In the foregoing, the invention has been described by way of example by the aid of the attached drawing, but different embodiments of the invention are possible within the claims.

Claims (3)

  1. Procedure for the regulation of gas circulation in a timber treatment or drying oven, said oven comprising a drying space (1) for timber (2), a fan (3) designed to effect gas circulation in the drying space and a heating unit (4) for heating the gas, characterised in that the change in the condition of gas circulation is measured substantially continuously throughout the treatment process at two points in the gas circulation on different sides of the timber (2) being treated and the intensity of gas circulation is continuously adjusted as necessary in view of the measured change.
  2. Procedure as defined in claim 1, characterised in that the change measured in the condition of gas circulation is a change in the humidity of the gas.
  3. Procedure as defined in claim 1, characterised in that the change measured in the condition of gas circulation is a change in the temperature of the gas.
EP98660058A 1997-12-09 1998-06-15 Method for controlling the gas circulation rate in a timber drying oven Expired - Lifetime EP0922919B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI974466 1997-12-09
FI974466A FI974466A0 (en) 1997-12-09 1997-12-09 Foerfarande Foer reglering av gascirkulation

Publications (2)

Publication Number Publication Date
EP0922919A1 EP0922919A1 (en) 1999-06-16
EP0922919B1 true EP0922919B1 (en) 2001-05-16

Family

ID=8550089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98660058A Expired - Lifetime EP0922919B1 (en) 1997-12-09 1998-06-15 Method for controlling the gas circulation rate in a timber drying oven

Country Status (5)

Country Link
EP (1) EP0922919B1 (en)
AT (1) ATE201263T1 (en)
DE (1) DE69800790T2 (en)
DK (1) DK0922919T3 (en)
FI (1) FI974466A0 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0700200L (en) * 2007-01-26 2008-07-27 Valutec Ab Procedure for adapting the drying air requirement to a wood dryer
EP2196295A1 (en) 2008-12-04 2010-06-16 Fachhochschule Eberswalde Wood, method and devices for its manufacture
CN102305521A (en) * 2011-04-29 2012-01-04 苏州市吴赣药业有限公司 Hot-air circulating oven
SE539634C2 (en) * 2015-05-11 2017-10-24 Coldbay Ab Method for determining an action requiring state in a compartment for drying wood
CN109595904A (en) * 2018-11-23 2019-04-09 泉州永润家居设计有限公司 A kind of Furniture manufacturing timber drying device
AT16621U3 (en) * 2019-10-07 2020-12-15 Franz Schlatte Method and device for drying items to be dried

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3714716A (en) * 1970-06-29 1973-02-06 Weyerhaeuser Co Process for kiln drying lumber by means of a predetermined drying rate
DE3340489A1 (en) * 1983-11-09 1985-08-14 Lignomat GmbH, 7148 Remseck METHOD FOR DRYING WOOD
US4599808A (en) * 1984-03-20 1986-07-15 The Foxboro Company Drying method and apparatus for fibrous material
DE3639929A1 (en) * 1986-11-22 1988-06-01 Babcock Bsh Ag CONTINUOUS DRYER FOR VENEER BLADES
DE3717659A1 (en) * 1987-05-26 1988-12-15 Brunner R Messtechmik METHOD AND DEVICE FOR DRYING WOOD
US4922624A (en) * 1988-11-14 1990-05-08 Tharpe John M Method and apparatus for drying lumber
SE504818C2 (en) * 1995-08-14 1997-04-28 Utec Sm Ab Process of drying wood

Also Published As

Publication number Publication date
FI974466A0 (en) 1997-12-09
EP0922919A1 (en) 1999-06-16
DE69800790D1 (en) 2001-06-21
DE69800790T2 (en) 2002-05-29
ATE201263T1 (en) 2001-06-15
DK0922919T3 (en) 2001-08-27

Similar Documents

Publication Publication Date Title
US4952145A (en) Apparatus for the heat treatment and/or drying of a web of material passing continuously through
US4974337A (en) Apparatus and method of drying and dehumidifying plastic
EP0326227A1 (en) A drier for a web of material
EP0922919B1 (en) Method for controlling the gas circulation rate in a timber drying oven
US6116895A (en) Dual mode convection oven
US6606948B1 (en) Method for controlling a chill roll system
US4922624A (en) Method and apparatus for drying lumber
US4829680A (en) Method of heat treatment of a length of material in a tentering machine
CA2806506A1 (en) Method for the continuous sintering of mineral material and sintering equipment
US3448969A (en) Fluid pressure sealing system for processing oven
US4413427A (en) Fuel control system for dryer
US5465661A (en) Printing press temperature adjustment system
US4555858A (en) Method and device for low energy consumption or granular products or the like containing moisture fixed or deposited at the surface with a constant yield
GB2120120A (en) Control of drying operation
JP5057896B2 (en) Method and apparatus for purifying dry exhaust of printing paper
RU2350866C1 (en) Technique of automatic control over process of dispersion materials drying in active hydrodynamics devices with heat medium recirculation
JPH03170790A (en) Control method of solvent concentration in dryer
JP3617131B2 (en) Method and apparatus for drying metal strip
JP3905957B2 (en) Asphalt compound production equipment
JP3946861B2 (en) Constant temperature and humidity air supply device
JPS55149633A (en) Automatic regulating method of waste gas amount at drying-deodorizing apparatus
CN220771821U (en) Device for preventing condensate water from appearing on product surface in molecular sieve drying process
JPH11276967A (en) Drying furnace for coating
JPS6032872Y2 (en) drying equipment
JPH06142602A (en) Continuous baking method of coating

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 DE DK FI FR GB IT LI NL 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: 19991213

AKX Designation fees paid

Free format text: AT BE CH DE DK FI FR GB IT LI NL SE

17Q First examination report despatched

Effective date: 20000126

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

RTI1 Title (correction)

Free format text: METHOD FOR CONTROLLING THE GAS CIRCULATION RATE IN A TIMBER DRYING OVEN

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

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 DE DK FI FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 201263

Country of ref document: AT

Date of ref document: 20010615

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69800790

Country of ref document: DE

Date of ref document: 20010621

ITF It: translation for a ep patent filed

Owner name: BIANCHETTI - BRACCO - MINOJA S.R.L.

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ISLER & PEDRAZZINI AG

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

ET Fr: translation filed
26 Opposition filed

Opponent name: BABCOCK-BSH GMBH

Effective date: 20010927

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

NLR1 Nl: opposition has been filed with the epo

Opponent name: BABCOCK-BSH GMBH

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBP Opposition withdrawn

Free format text: ORIGINAL CODE: 0009264

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBL Opposition procedure terminated

Free format text: ORIGINAL CODE: EPIDOS OPPC

PLBM Termination of opposition procedure: date of legal effect published

Free format text: ORIGINAL CODE: 0009276

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

Free format text: STATUS: OPPOSITION PROCEDURE CLOSED

27C Opposition proceedings terminated

Effective date: 20030119

NLR2 Nl: decision of opposition

Effective date: 20030119

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)

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: 20080615

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

Ref country code: FI

Payment date: 20100624

Year of fee payment: 13

Ref country code: DK

Payment date: 20100625

Year of fee payment: 13

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

Ref country code: AT

Payment date: 20100617

Year of fee payment: 13

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

Ref country code: NL

Payment date: 20100625

Year of fee payment: 13

Ref country code: CH

Payment date: 20100625

Year of fee payment: 13

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

Ref country code: SE

Payment date: 20100621

Year of fee payment: 13

Ref country code: GB

Payment date: 20100609

Year of fee payment: 13

Ref country code: FR

Payment date: 20100721

Year of fee payment: 13

Ref country code: DE

Payment date: 20100629

Year of fee payment: 13

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

Ref country code: BE

Payment date: 20100701

Year of fee payment: 13

BERE Be: lapsed

Owner name: *STELLAC OY

Effective date: 20110630

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20120101

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 NON-PAYMENT OF DUE FEES

Effective date: 20110615

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

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

Effective date: 20110615

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: 20110615

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 201263

Country of ref document: AT

Kind code of ref document: T

Effective date: 20110615

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20120229

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

Ref country code: BE

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

Effective date: 20110630

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69800790

Country of ref document: DE

Effective date: 20120103

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

Ref country code: DE

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

Effective date: 20120103

Ref country code: FR

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

Effective date: 20110630

Ref country code: LI

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

Effective date: 20110630

Ref country code: CH

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

Effective date: 20110630

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

Ref country code: NL

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

Effective date: 20120101

Ref country code: IT

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

Effective date: 20110615

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: 20110615

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

Ref country code: IT

Payment date: 20100626

Year of fee payment: 13

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 NON-PAYMENT OF DUE FEES

Effective date: 20110630

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 NON-PAYMENT OF DUE FEES

Effective date: 20110616