EP0776454A1 - Flat tube for a heat exchanger - Google Patents
Flat tube for a heat exchangerInfo
- Publication number
- EP0776454A1 EP0776454A1 EP96922944A EP96922944A EP0776454A1 EP 0776454 A1 EP0776454 A1 EP 0776454A1 EP 96922944 A EP96922944 A EP 96922944A EP 96922944 A EP96922944 A EP 96922944A EP 0776454 A1 EP0776454 A1 EP 0776454A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flat
- free edges
- metal strip
- central segment
- flat tube
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
- F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/151—Making tubes with multiple passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S165/00—Heat exchange
- Y10S165/906—Reinforcement
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49391—Tube making or reforming
Definitions
- the invention relates to a flat tube for a heat exchanger, in particular for a motor vehicle heating and / or air conditioning installation or for a motor vehicle cooling installation.
- It relates more particularly to a flat tube of the type comprising two opposite flat sides connected to each other by two rounded sides and by at least two longitudinal internal partitions to define circulation channels in the tube.
- Such flat tubes also called “multichannel tubes” are arranged in parallel to form a bundle, which also includes corrugated inserts, forming fins, arranged between the tubes.
- These tubes are intended to be traversed by a heat transfer fluid which can be water or a refrigerant.
- these multichannel tubes can be used to form a condenser of an air conditioning installation and then be traversed by a refrigerant.
- the latter may be at high pressure.
- the internal partitions of the tubes serve in such a case to stiffen the tube and to prevent its deformation under the effect of the high pressure of the refrigerant.
- the partitions make it possible to define circulation channels which can be crossed by different fluids, possibly against the current.
- this known tube has the disadvantage that it allows only flat tubes having a single internal partition and thus delimiting only two circulation channels.
- the invention particularly aims to overcome the aforementioned drawbacks.
- the tube is thus obtained by assembling and brazing two complementary parts which closely fit one into the other, the main part sandwiching the secondary part.
- the two parts When the two parts are assembled and brazed, they constitute a single tube which comprises two internal partitions and therefore three circulation channels, which extend parallel to each other.
- each of the free edges of the main part is folded at right angles to the corresponding lateral segment and stops at a distance from the first flat side, providing a given value interval.
- each of the free edges of the secondary piece is folded at right angles to the central segment and ends in a flange which is substantially parallel to the central segment and which is suitable for entering into a corresponding interval of the piece. main, which allows a close nesting of the two parts between them.
- the value of the interval is substantially equal to the thickness of the metal strip from which the secondary part is formed, which allows close assembly.
- the metal strip of the main part is provided with a solder plating on one of its faces, or external face, which makes it possible, on the one hand, to form a weld joint with the secondary part and, on the other hand, to form a weld bead with the fins of the exchanger.
- the metal strip of the secondary part is provided with a solder plating on its two faces, which allows, on the one hand, to obtain a weld bead with the main part and , on the other hand, to ensure a weld bead with the fins of the heat exchanger.
- FIG. 1 is a cross-sectional view of a flat tube according to the invention.
- FIG. 2 is a partial side view of a heat exchanger comprising flat tubes according to the invention intercalated with fins.
- the flat tube shown in cross section in FIG. 1 is formed by the assembly and brazing of two complementary parts, namely a main part 12 and a secondary part 14.
- the main part 12 is formed from a metal strip, for example made of aluminum or aluminum alloy, folded by several successive rolling operations.
- the part 12 comprises a first flat side 16 framed by two rounded sides 18, of semi-circular shape, which are connected respectively to two lateral segments 20 of planar configuration.
- the two lateral segments 20 are parallel to the flat side 16 and each have a width which corresponds substantially to one third of the width of the flat side 16.
- Each lateral segment 20 ends at a free edge 22 folded at right angles towards the interior of the flat side 16.
- the two free edges 22 are mutually parallel and spaced apart by a distance d which is substantially equal to a third of the width of the flat side 16.
- Each of the free edges 22 stops at a distance from the flat side 16, providing an interval i of given value which is substantially equal to the thickness of the metal strip. that of which the secondary part 14 is formed. This thickness is in practice the same as that of the metal strip from which the main part 12 is formed.
- the secondary part 14 is formed from a folded metal strip, for example made of aluminum or aluminum alloy, obtained by several successive rolling operations.
- the part 14 comprises a central segment 24 of planar configuration whose width is substantially equal to the above-mentioned distance d.
- This central segment 24 leads to two free edges 26 folded at right angles, so that they extend parallel to each other.
- Each of the free edges 26 continues with a flange 28 which is perpendicular to the edge 26 and therefore parallel to the segment 24.
- the two flanges 28 are coplanar and extend in opposite directions.
- the secondary part 14 can be sandwiched in the main part 12 in the position shown in FIG. 1.
- each of the edges 26 of the part 14 comes to bear against a corresponding edge 22 of the part 12, while each of the edges 28 comes to be embedded in an interval i of the part 12.
- the interlocking of the two parts can be done in a longitudinal direction, or by slight deformation of at least one of the two parts.
- each edge 22 forms with the edge 26 and the rim 16 corresponding an internal partition, so that the tube is divided into three channels 30 which extend parallel to one another.
- the central segment 14 and the two lateral segments 20 are coplanar and thus form a second flat side 32 of the flat tube, which extends parallel to the first flat side 16.
- the metal strip from which the main part 12 is formed is provided with a solder plating on its outer face FE to allow the formation of a weld joint with the secondary part 14. This also makes it possible to obtain a weld bead for the connection of the tube with fins 34, as shown in FIG. 2.
- the metal strip from which the secondary part 14 is formed is provided with a solder plating on its outer face FE and on its inner face FI. This makes it possible to obtain a weld bead of the two flanges 28 with the interior of the flat side 16.
- the presence of the flanges 28 is optional. However, this presence is preferable to facilitate temporary maintenance of the two parts for the brazing operation.
- the flat tube according to the invention is intended for the production of heat exchangers, in particular for heating and / or air conditioning installations of motor vehicles.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9507513A FR2735853B1 (en) | 1995-06-22 | 1995-06-22 | FLAT TUBE FOR HEAT EXCHANGER |
FR9507513 | 1995-06-22 | ||
PCT/FR1996/000939 WO1997001071A1 (en) | 1995-06-22 | 1996-06-18 | Flat tube for a heat exchanger |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0776454A1 true EP0776454A1 (en) | 1997-06-04 |
EP0776454B1 EP0776454B1 (en) | 1998-05-20 |
Family
ID=9480295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96922944A Expired - Lifetime EP0776454B1 (en) | 1995-06-22 | 1996-06-18 | Flat tube for a heat exchanger |
Country Status (7)
Country | Link |
---|---|
US (1) | US5704423A (en) |
EP (1) | EP0776454B1 (en) |
KR (1) | KR970705731A (en) |
DE (1) | DE69600309T2 (en) |
ES (1) | ES2117900T3 (en) |
FR (1) | FR2735853B1 (en) |
WO (1) | WO1997001071A1 (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3829242B2 (en) * | 1996-02-28 | 2006-10-04 | 敬 高橋 | Flat piping |
US5956846A (en) * | 1997-03-21 | 1999-09-28 | Livernois Research & Development Co. | Method and apparatus for controlled atmosphere brazing of unwelded tubes |
FR2769358B1 (en) * | 1997-10-02 | 2000-01-28 | Valeo Thermique Moteur Sa | MULTI-CHANNEL FLAT TUBE FOR HEAT EXCHANGER |
FR2772901B1 (en) * | 1997-12-23 | 2000-03-03 | Valeo Thermique Moteur Sa | FOLDED TUBE AND BRAZED FOR HEAT EXCHANGER, AND HEAT EXCHANGER COMPRISING SUCH TUBES |
GB0101697D0 (en) * | 2001-01-23 | 2001-03-07 | Emerson & Renwick Ltd | Heat exchanger tube |
US6530514B2 (en) | 2001-06-28 | 2003-03-11 | Outokumpu Oyj | Method of manufacturing heat transfer tubes |
US6467535B1 (en) * | 2001-08-29 | 2002-10-22 | Visteon Global Technologies, Inc. | Extruded microchannel heat exchanger |
US20080279222A1 (en) * | 2001-10-18 | 2008-11-13 | Level 3 Communications Llc | Distribution of traffic across a computer network |
DE10201512A1 (en) * | 2002-01-17 | 2003-07-31 | Behr Gmbh & Co | Multi-chamber flat tube |
US7032808B2 (en) * | 2003-10-06 | 2006-04-25 | Outokumu Oyj | Thermal spray application of brazing material for manufacture of heat transfer devices |
US20080047141A1 (en) * | 2006-08-08 | 2008-02-28 | Inventec Corporation | Method for fabricating supporting column of heat sink |
US20080302518A1 (en) * | 2007-06-07 | 2008-12-11 | Joseph Durdel | Flat tube heat exchanger |
DE102007039292A1 (en) * | 2007-08-20 | 2009-02-26 | Behr Gmbh & Co. Kg | Multi-chamber flat tube, heat exchanger and use of a heat exchanger |
FR2956949B1 (en) | 2010-03-04 | 2013-04-19 | Pelle Equipements | COOKING DEVICE FOR FOOD PRODUCTS BASED ON PASTE AND COOKING FILET. |
EP2584301B1 (en) | 2011-10-19 | 2014-08-13 | WS-Wärmeprozesstechnik GmbH | High temperature heat exchanger |
US9015923B2 (en) | 2012-08-09 | 2015-04-28 | Modine Manufacturing Company | Heat exchanger tube, heat exchanger tube assembly, and methods of making the same |
US9302337B2 (en) * | 2012-08-09 | 2016-04-05 | Modine Manufacturing Company | Heat exchanger tube, heat exchanger tube assembly, and methods of making the same |
EP2894990B1 (en) * | 2012-09-14 | 2017-05-24 | Revent International AB | Hot air oven |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE805785C (en) * | 1949-12-30 | 1951-05-31 | Friedrich Karl Rosenbaum | Welded plate radiator |
FR1573193A (en) * | 1968-04-17 | 1969-07-04 | ||
CH626160A5 (en) * | 1977-10-14 | 1981-10-30 | Bogatzki Hans Ulrich | |
US4805693A (en) * | 1986-11-20 | 1989-02-21 | Modine Manufacturing | Multiple piece tube assembly for use in heat exchangers |
DE3725602A1 (en) * | 1987-08-01 | 1989-02-09 | Sueddeutsche Kuehler Behr | FLAT TUBE FOR A HEAT EXCHANGER |
US5186251A (en) * | 1992-06-01 | 1993-02-16 | General Motors Corporation | Roll formed heat exchanger tubing with double row flow passes |
GB2268260A (en) * | 1992-06-24 | 1994-01-05 | Llanelli Radiators Ltd | Heat exchange tubes formed from a unitary portion of sheet or strip material |
US5441105A (en) * | 1993-11-18 | 1995-08-15 | Wynn's Climate Systems, Inc. | Folded parallel flow condenser tube |
US5511613A (en) * | 1994-12-12 | 1996-04-30 | Hudson Products Corporation | Elongated heat exchanger tubes having internal stiffening structure |
-
1995
- 1995-06-22 FR FR9507513A patent/FR2735853B1/en not_active Expired - Lifetime
-
1996
- 1996-06-18 EP EP96922944A patent/EP0776454B1/en not_active Expired - Lifetime
- 1996-06-18 WO PCT/FR1996/000939 patent/WO1997001071A1/en not_active Application Discontinuation
- 1996-06-18 KR KR1019970701125A patent/KR970705731A/en not_active Application Discontinuation
- 1996-06-18 ES ES96922944T patent/ES2117900T3/en not_active Expired - Lifetime
- 1996-06-18 DE DE69600309T patent/DE69600309T2/en not_active Expired - Lifetime
- 1996-08-18 US US08/793,245 patent/US5704423A/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9701071A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE69600309D1 (en) | 1998-06-25 |
DE69600309T2 (en) | 1998-09-10 |
FR2735853A1 (en) | 1996-12-27 |
ES2117900T3 (en) | 1998-08-16 |
FR2735853B1 (en) | 1997-08-01 |
WO1997001071A1 (en) | 1997-01-09 |
KR970705731A (en) | 1997-10-09 |
US5704423A (en) | 1998-01-06 |
EP0776454B1 (en) | 1998-05-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0776454B1 (en) | Flat tube for a heat exchanger | |
EP1192402A2 (en) | Multichannel tube heat exchanger, in particular for motor vehicle | |
EP0505244B1 (en) | Heat exchanger with tube bundle, more particularly for motor vehicle | |
EP0779490A1 (en) | End plate for heat exchanger, method for manufacturing the same, and heat exchanger comprising such end plate | |
EP0567399A1 (en) | Heat exchanger tube with integrated perturbation device | |
EP2208955A1 (en) | heat exchange fin for a heat exchange system | |
FR2748317A1 (en) | Heat exchanger, e.g. for motor vehicle air conditioning condenser | |
WO2018060638A1 (en) | Heat exchanger, in particular for a motor vehicle | |
EP1780489A1 (en) | Header box for heat exchanger | |
EP0535664B1 (en) | Tubular header box for heat-exchanger | |
WO2018060626A1 (en) | Heat exchange bundle for a heat exchanger, associated heat exchanger and assembly method | |
EP1957927B1 (en) | Reinforced collector for the collecting box of a heat exchanger and collecting box comprising one such collector | |
EP2655000A1 (en) | Brazing method for a heat exchanger, and corresponding tube and heat exchanger | |
FR2823840A1 (en) | Heat exchanger folded tube is obtained by folding metal strip over itself to define two channels separated by partition to form transverse member created by strip folded edges | |
WO2000033008A1 (en) | Flat tube for heat exchanger of reduced width | |
FR2735221A1 (en) | Flat tube heat exchanger, e.g. for motor vehicle radiator | |
US6494254B2 (en) | Brazed tube for a heat exchanger, method of manufacture and exchanger | |
WO2007048826A2 (en) | Collector box for a heat exchanger, particularly for a high-pressure fluid, exchanger comprising a box of this type and method for the production thereof | |
WO2018060625A1 (en) | Heat exchanger, in particular for a motor vehicle | |
WO2018060624A1 (en) | Collector box, heat exchanger and corresponding assembly method | |
FR2924793A1 (en) | Tube for brazed heat exchanger of motor vehicle, has metallic sheet folded at folding lines and comprising ends independently fixed on one of large sides of tube, where sides of one of channels have double wall thickness | |
FR2780153A1 (en) | Flast tube heat exchanger esp for motor vehicle cooling system radiator | |
EP1548385A2 (en) | Heat exchange tube with two flow passages and heat exchanger provided with such tubes | |
FR2817334A1 (en) | Brazed flat tube heat exchanger has tube ends cut away and folded outwards for brazing inside manifold | |
FR2800451A1 (en) | Compact heat exchanger for vehicle, comprises shell joined directly to side of collector plate near but not touching the collar sides and cooling tubes fitted within the collector plate collars |
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 |
|
17P | Request for examination filed |
Effective date: 19970127 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES GB IT SE |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
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 |
|
17Q | First examination report despatched |
Effective date: 19971023 |
|
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): DE ES GB IT SE |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19980520 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19980617 Year of fee payment: 3 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 19980622 Year of fee payment: 3 |
|
REF | Corresponds to: |
Ref document number: 69600309 Country of ref document: DE Date of ref document: 19980625 |
|
ITF | It: translation for a ep patent filed |
Owner name: SOCIETA' ITALIANA BREVETTI S.P.A. |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2117900 Country of ref document: ES Kind code of ref document: T3 |
|
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 |
|
26N | No opposition filed | ||
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: 19990619 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19990629 |
|
EUG | Se: european patent has lapsed |
Ref document number: 96922944.2 |
|
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: 20000618 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20000618 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20010503 |
|
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;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050618 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20150612 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 69600309 Country of ref document: DE |