Classifications

• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
  • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
  • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
  • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
  • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
  • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
  • G06K19/07758—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for adhering the record carrier to further objects or living beings, functioning as an identification tag
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
  • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
  • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
  • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
  • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
  • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
  • H01L24/93—Batch processes
  • H01L24/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
  • H01L24/97—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
  • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
  • H01L2224/42—Wire connectors; Manufacturing methods related thereto
  • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
  • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
  • H01L2224/4805—Shape
  • H01L2224/4809—Loop shape
  • H01L2224/48091—Arched
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
  • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
  • H01L2224/42—Wire connectors; Manufacturing methods related thereto
  • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
  • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
  • H01L2224/481—Disposition
  • H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
  • H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
  • H01L2224/48225—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
  • H01L2224/48227—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
  • H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
  • H01L2224/732—Location after the connecting process
  • H01L2224/73251—Location after the connecting process on different surfaces
  • H01L2224/73265—Layer and wire connectors
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
  • H01L2224/93—Batch processes
  • H01L2224/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
  • H01L2224/97—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
  • H01L2924/01—Chemical elements
  • H01L2924/01006—Carbon [C]
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
  • H01L2924/01—Chemical elements
  • H01L2924/01013—Aluminum [Al]
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
  • H01L2924/01—Chemical elements
  • H01L2924/01029—Copper [Cu]
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
  • H01L2924/01—Chemical elements
  • H01L2924/01033—Arsenic [As]
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
  • H01L2924/01—Chemical elements
  • H01L2924/01057—Lanthanum [La]
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
  • H01L2924/01—Chemical elements
  • H01L2924/01058—Cerium [Ce]
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
  • H01L2924/01—Chemical elements
  • H01L2924/01079—Gold [Au]
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
  • H01L2924/01—Chemical elements
  • H01L2924/01082—Lead [Pb]
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
  • H01L2924/10—Details of semiconductor or other solid state devices to be connected
  • H01L2924/102—Material of the semiconductor or solid state bodies
  • H01L2924/1025—Semiconducting materials
  • H01L2924/10251—Elemental semiconductors, i.e. Group IV
  • H01L2924/10253—Silicon [Si]

Definitions

• the invention relates to a method for manufacturing a radiofrequency identification device, and to an identification device structure obtained by implementing the method.
• the invention furthermore relates to the use of the identification device for the manufacture of secure and tamper-proof identification documents, such as, for example, ePassports.
• Radiofrequency identification devices are already known in the state of the art, according to which an electronic radiofrequency device constituted by a microelectronic chip connected to an antenna is disposed on an insulating substrate, and then laminated on top of it.
• the substrate provided with the electronics formed by the chip and the antenna, one or more layers of more or less compressible materials, intended to protect and integrate the electronics.
• radiofrequency identification devices that are necessary today must be able to integrate without any extra thickness into the sheets of identification documents such as passports, and have a size and characteristics. mechanical, including flexibility, compatible with the specifications of these documents.
• An object of the invention is therefore to provide a method for manufacturing radiofrequency identification devices which leads to a high reliability over time of the devices obtained.
• Another object of the invention is that the method makes it possible to produce radiofrequency identification devices that are suitable for a large number of applications, so as to take advantage of very high volumes, and therefore lower unit costs. Indeed, given the large quantities of identification devices to be delivered to safety organizations such as those of certain states, it is essential to have a technology for manufacturing radio frequency identification devices that is very simple. , allowing a low manufacturing cost with respect to the intended application, while having sufficient reliability to ensure the life in question.
• Another object of the invention is to propose a method of manufacturing radio frequency identification devices which makes it possible to obtain, in a reliable and repetitive manner, identification devices which are perfectly flat and have a very uniform thin thickness, of a few hundred pixels. micrometers, for example less than 400 micrometers.
• the subject of the invention is a method for manufacturing radiofrequency identification devices of a radiofrequency identification device, comprising the following steps:
• an antenna is made on a thin and flexible substrate
• a microelectronic chip is deposited in each cavity of said perforated sheet and the output pads are electrically connected from the microelectronic chip to the corresponding terminals of the antenna;
• the microelectronic chip thus wired is protected by closing off the cavity enclosing the chip, the method according to the invention being characterized in that the thin and flexible substrate and the perforated sheet are each of fine thickness, calibrated, substantially uniform and flat, the sum of their thicknesses being less than about 350 micrometers, and the thickness of the perforated sheet being constant and slightly greater than the thickness of the microelectronic chip.
• the thin and flexible substrate and the perforated sheet are each of fine thickness, calibrated, substantially uniform and flat, the sum of their thicknesses being less than about 350 micrometers, and the thickness of the perforated sheet being constant and slightly greater than the thickness of the microelectronic chip.
• the method is such that the flexible substrate and the perforated sheet are continuous and packaged in a roll, and a plurality of electronic identification devices are assembled by continuous lamination, and then the electronic devices thus formed are individualized, realizing a transverse cut between two contiguous electronic devices.
• the perforated sheet is packaged in roll and is deposited on the substrate by rolling on one side of the substrate coated with an adhesive film.
• the opposite side of the chip is glued to that which carries the output pads of the chip on the substrate, so as to presenting its output pads to the top of the cavity, said cavity being through, and a connection is made by microcabling between each output pad of the chip, and a corresponding terminal of the antenna.
• the opposite side of the chip is glued to that which carries the output pads of the chip on the substrate, so as to presenting its output pads to the top of the cavity, and making a connection by depositing a low viscosity conductive substance, between each output pad of the chip, and a corresponding terminal of the antenna.
• the face of the chip which bears the output pads of the chip is bonded to conductive protrusions of the substrate, connected to the respective terminals of the antenna.
• a liquid encapsulation resin is deposited in the cavity, above the microelectronic chip and connections at the terminals of the antenna, so as to substantially fill the free volume of the cavity, then the resin is polymerized. In this way, we obtain a perfectly flat identification device, without excess thickness, particularly at the cavity.
• the cavities of the perforated sheet are non-traversing, and, after making the connections between the output pads of the chip and the terminals of the antenna, the perforated sheet is laminated on the substrate so that each cavity encapsulates and protects a microelectronic chip.
• the invention also relates to an electronic radiofrequency identification device, characterized in that it is obtained using the manufacturing method as described above.
• the radio frequency identification electronic device preferably has a length between about 14 mm and about 25 mm, a width of about 13 mm to about 19 mm, and a thickness of less than about 350 micrometers.
• the radiofrequency identification device comprises:
• the identification device being characterized in that it comprises a flat and perforated sheet, of small thickness and calibrated, this perforated sheet being mechanically connected to one of the faces of the substrate, and comprising a cavity in which the chip is housed and the interconnection means,
• the invention also aims to protect the use of an electronic device as described above, to manufacture an electronic passport comprising one or more sheets coated with identification information of its holder, one of the sheets of the passport comprising a recess adapted to receive the electronic device according to the invention.
• the invention relates to an electronic passport, characterized in that it comprises in at least one of its sheets, a recess in which is inserted and secured an electronic radiofrequency identification device according to the invention.
• FIG. 1 illustrates a method of manufacturing radiofrequency identification devices according to the state of the art
• FIG. 2 illustrates a first embodiment of the manufacturing method according to the invention
• FIG. 3 illustrates a variant of the manufacturing method of FIG. 2
• FIG. 4 illustrates a method of continuous manufacture of radiofrequency identification devices according to the invention. Reference is made to FIG.
• an electronic device 10 for passports or similar products made in a known manner.
• an electronic micromodule 1 was deposited on a support sheet 5, in the cavity 3 of a sheet 2.
• the micromodule 1 is provided with an antenna (not visible), and a silicon chip 4 connected to the antenna.
• a leveling resin was deposited filling the cavity, then the cavity 3 was covered with a sheet 6 of the same nature as the sheet 2 provided with the cavity.
• crosslinking produces deformations, by swelling and then removal of the leveling resin, deformations which are disadvantageous when seeking very thin products, such as those intended to be incorporated in passports.
• passport paper manufacturers, and their printing customers generally have the expertise to roll sheets such as those used in manufacturing passports, but the operations of depositing resin and cooking are completely unknown to manufacturers of passports or similar documents, which complicates the implementation of the known method for manufacturing electronic modules for passport.
• Each radiofrequency identification device 20 comprises a substrate 21 on which a sheet 22 of small, calibrated thickness has been placed, contributing, in the manner of a spacer, to obtaining a thin and calibrated thickness for the device
• This sheet 22 comprises in its thickness one or more perforations, passing through or not, forming reservations or cavities 23, at the place intended to receive a microelectronic chip 24 from a cut-off chipboard by sawing. Because of the perforations it comprises, the sheet 22 will be referred to as "perforated sheet" for the purposes of the present description.
• Each cavity 23 of the perforated sheet 22 is through in the embodiment of FIG. 2, so that after depositing the perforated sheet 22 on the susbtrate 21, the output pads 25 of the microelectronic chip 24 remain accessible to realize the connection with the terminals 26 of the antenna.
• the substrate 21 is relatively flexible.
• the perforated sheet 22 is preferably, but not exclusively, made of polyethylene terephthalate or polyimide. More specifically, it may be especially polyetherimide (PEI) family materials, polyimides, polyester (polyethylene naphthalate or PEN, polyethylene terephthalate or PET). These materials are chosen to present a voltage module of the order of 2 to 4 gigapascal (Gpa).
• PEI polyetherimide
• PEN polyethylene naphthalate
• PET polyethylene terephthalate
• These materials are chosen to present a voltage module of the order of 2 to 4 gigapascal (Gpa).
• the sheet 22 is packaged in a roll and is deposited on the substrate 21 by rolling on the face of the substrate coated with an adhesive film obtained by coating, or a hot-melt type adhesive film in English terminology, or alternatively a pressure-sensitive adhesive.
• the cohesion between the two layers 21 and 22 is thus ensured by the adhesive, which is for example of the epoxy type.
• the thickness of the layer of adhesive material will be according to specific needs within a range of 5 to 70 micrometers. But it can also be adhesion obtained without adhesive, using the intrinsic adhesive properties of the materials themselves, such as PET.
• the flexible substrate 21 and the perforated sheet 22 are each of substantially uniform thickness, the sum of their thicknesses being less than about 350 micrometers.
• the thickness of the perforated sheet 22 is constant and calibrated. It is slightly greater than the thickness of the microelectronic chip 24.
• the chip 24 deposited in the cavity 23 is bonded to the substrate 21 by means of an adhesive which may be electrically conductive or electrically insulating (a process known as " die attach "in English terminology), at the interface between the substrate 21 and the perforated sheet 22.
• the active face of the chip is disposed so that its output pads 25 are oriented towards the opening of the cavity 23 .
• the output pads 25 of the chip are electrically connected to the corresponding terminals 26 of the antenna 27 using a microwiring technique known in itself, called “wire-bonding", which consists of carrying out conductors 28 and welds, the connection of the output pads 25 of the chip 24 with the contact terminal 26 of the printed circuit board.
• the electrical interconnection of the chip 24 and the antenna 27 can also be done by means of another so-called “Flip Chip” technique, according to which a bump chip or conductive protuberances, metallic is used. or polymer (“bumps”), which is bonded to the substrate so that the active face of the chip that carries the chip output pads is oriented downwards (in the orientation according to Figure 2 ).
• the electrical connection is provided by the conductive protrusions of the substrate, connected to the respective terminals of the antenna.
• connection is to use a "wire deposit” technique, in which the opposite side of the chip is glued to that which carries the output pads on the substrate, so as to present the output pads upwards. of the cavity.
• a connection is made by depositing a low-viscosity conductive substance between each output terminal of the chip and a corresponding terminal of the antenna.
• the wired chip is encapsulated in a casing (so-called “potting" operation in Anglo-Saxon terminology), which consists in protecting the chip 24 and the soldered connection wires 28, or the conductive protrusions, if necessary, by filling the remainder of the cavity 23 with a liquid encapsulation resin 29 which may be, for example, based on epoxy silicone or polyurethane, and the resin is then polymerized to cure it. In this way, the cavity 23 is filled and closed and a device is obtained.
• radiofrequency identification 20 particularly thin, and particularly calibrated thickness.
• the encapsulation resin 29 one will choose for example from single-component resins without solvent, electrically insulating, including the family of epoxies or acrylates. Their polymerization is obtained by crosslinking in temperature, or ultraviolet radiation, or both.
• the resin may be transparent or opaque. Its viscosity characteristics (cone plane viscosity at 25 ° C) being 400 milliPascal. second (mPa.s) at 45,000 mPa.s, and its hardness characteristics after crosslinking being 60 to 90 shore D.
• the dimensions of the radiofrequency identification device 20 may depend on the final applications, and in particular on the desired range which determines the size of the antenna.
• identification devices 20 intended to communicate at a short distance and to be incorporated in passports or similar supports may have dimensions quite reduced, for example a length of between about 14 mm and about 25 mm, a width of between about 13 mm and about 19 mm, and a thickness of less than about 350 micrometers.
• the perforated sheet 22 and the substrate will have tolerances of thickness less than or equal to 20 microns.
• a subtractive method such as etching, an additive process of metal (copper or aluminum in particular), or a method of screen printing conductive material (glue or conductive ink) on an dielectric support, in particular of polyimide or epoxy type.
• the thickness of the antenna will be according to the specific needs or the technology used, of the order of 2 to 70 micrometers.
• FIG. 3 is a reference.
• the cavity or reservation 23 of the perforated sheet 22 is non-traversing.
• the antenna 27 is first deposited on the substrate 21, then a microelectronic chip 24 is glued to the substrate 21, on the same side as the antenna 27, and the electrical connection of the pads 25 is made. the chip 24 with the terminals 26 of the antenna, using one of the interconnection techniques described above.
• the perforated sheet 22 is laminated on the substrate 21 so that the cavity 23 encapsulates and protects the microelectronic chip 24.
• This figure shows a susbstrate sheet 21 configured as a strip, for example 35 mm wide, wound in a roll, and surmounted by a perforated sheet 22 also in strip.
• the substrate strip 21 comprises on its sides driving holes 32 intended to cooperate with the pins of a machine (not shown) for rolling, so as to drive the substrate strip 21.
• the strip of material of the perforated sheet 22 has cavities 23 regularly spaced in which it is expected to have a microelectronic chip 24 and the resin 29 as previously described. At the bottom of each cavity 23, the terminals 26 of each antenna made on the substrate strip 21 can be seen by one of the known techniques, for example the deposition of conductive material.
• the substrate web 21 coated with an adhesive material, and the perforated web sheet 22 are laminated together using known rolling machines.
• each cavity 23 is provided with its microelectronic chip 24, which is electrically connected to the terminals of the antenna, then each cavity 23 is filled with encapsulation resin 29.
• This manufacturing method therefore allows a continuous manufacture of electronic devices (20,30) according to the invention, with a high rate, greater than 4000 pieces per hour, and excellent reliability.
• the electronic devices (20; 30) obtained according to the methods according to the invention form pellets of reduced size and of small and calibrated thickness. These pellets can then be reported, in particular not gluing, rolling or other known techniques, in media such as sheets for the manufacture of passports, or any other identification document.

Landscapes

• Engineering & Computer Science (AREA)
• Computer Hardware Design (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Power Engineering (AREA)
• Credit Cards Or The Like (AREA)
• Devices For Checking Fares Or Tickets At Control Points (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34980170

Family Applications (1)

Country Status (7)

Families Citing this family (28)

Family Cites Families (12)

• 2005
  • 2005-02-11 FR FR0501378A patent/FR2882174B1/fr not_active Expired - Fee Related
• 2006
  • 2006-02-03 US US11/884,123 patent/US7992790B2/en not_active Expired - Fee Related
  • 2006-02-03 CN CN200680011238.8A patent/CN101203869B/zh not_active Expired - Fee Related
  • 2006-02-03 RU RU2007133794/08A patent/RU2464635C2/ru not_active IP Right Cessation
  • 2006-02-03 EP EP06709260A patent/EP1846875A1/fr not_active Withdrawn
  • 2006-02-03 WO PCT/FR2006/000271 patent/WO2006084984A1/fr active Application Filing
• 2007
  • 2007-08-31 MA MA30189A patent/MA29314B1/fr unknown

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events