WO2023203294A1 - Procédé de fabrication d'une carte de circuit imprimé et carte de circuit imprimé - Google Patents
Procédé de fabrication d'une carte de circuit imprimé et carte de circuit imprimé Download PDFInfo
- Publication number
- WO2023203294A1 WO2023203294A1 PCT/FR2023/050523 FR2023050523W WO2023203294A1 WO 2023203294 A1 WO2023203294 A1 WO 2023203294A1 FR 2023050523 W FR2023050523 W FR 2023050523W WO 2023203294 A1 WO2023203294 A1 WO 2023203294A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- printed circuit
- circuit board
- conductive
- layer
- conductive material
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/24—Reinforcing the conductive pattern
- H05K3/245—Reinforcing conductive patterns made by printing techniques or by other techniques for applying conductive pastes, inks or powders; Reinforcing other conductive patterns by such techniques
- H05K3/247—Finish coating of conductors by using conductive pastes, inks or powders
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0263—High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board
- H05K1/0265—High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board characterized by the lay-out of or details of the printed conductors, e.g. reinforced conductors, redundant conductors, conductors having different cross-sections
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
- H05K1/185—Components encapsulated in the insulating substrate of the printed circuit or incorporated in internal layers of a multilayer circuit
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/03—Conductive materials
- H05K2201/0332—Structure of the conductor
- H05K2201/0335—Layered conductors or foils
- H05K2201/0338—Layered conductor, e.g. layered metal substrate, layered finish layer or layered thin film adhesion layer
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/03—Conductive materials
- H05K2201/0332—Structure of the conductor
- H05K2201/0364—Conductor shape
- H05K2201/0379—Stacked conductors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09009—Substrate related
- H05K2201/09036—Recesses or grooves in insulating substrate
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
- H05K2201/09736—Varying thickness of a single conductor; Conductors in the same plane having different thicknesses
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
- H05K2201/098—Special shape of the cross-section of conductors, e.g. very thick plated conductors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/02—Details related to mechanical or acoustic processing, e.g. drilling, punching, cutting, using ultrasound
- H05K2203/0228—Cutting, sawing, milling or shearing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/42—Plated through-holes or plated via connections
- H05K3/429—Plated through-holes specially for multilayer circuits, e.g. having connections to inner circuit layers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4602—Manufacturing multilayer circuits characterized by a special circuit board as base or central core whereon additional circuit layers are built or additional circuit boards are laminated
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4614—Manufacturing multilayer circuits by laminating two or more circuit boards the electrical connections between the circuit boards being made during lamination
- H05K3/4617—Manufacturing multilayer circuits by laminating two or more circuit boards the electrical connections between the circuit boards being made during lamination characterized by laminating only or mainly similar single-sided circuit boards
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4697—Manufacturing multilayer circuits having cavities, e.g. for mounting components
Definitions
- TITLE METHOD FOR MANUFACTURING A PRINTED CIRCUIT BOARD AND PRINTED CIRCUIT BOARD
- the present invention relates to a method of manufacturing a printed circuit board provided in particular with a first layer comprising a first series of conductive tracks for the circulation of power currents and a second series of conductive tracks for the circulation of control currents.
- the invention thus belongs to the field of manufacturing printed circuit boards.
- the invention offers a solution to the problems mentioned above, by proposing a method of manufacturing a printed circuit board allowing optimization of the routing of the conductive tracks.
- the invention thus relates, in its broadest sense, to a process for manufacturing a printed circuit board.
- the method according to this aspect of the invention comprises a step of depositing a conductive material, by means of an additive manufacturing device, on a first conductive track which is initially presented by a first layer of the printed circuit board .
- the manufacturing process according to this aspect of the invention it is possible to locally deposit copper or another conductive material on top of a conductive track made with traditional methods.
- the method according to this aspect of the invention thus makes it possible to produce, on a single and the same layer of the printed circuit board, conductive tracks having different thicknesses, of low thickness for low intensity currents and of high thickness for high intensity currents. This makes it easier to route the conductive tracks and limits the number of layers of the printed circuit board
- the method according to the invention makes it possible to contain the thickness of the printed circuit board and makes it possible to obtain metallized holes of moderate length having high quality and high reliability.
- the method according to this aspect of the invention may present one or more complementary characteristics among the following, considered individually or in all technically possible combinations.
- the method comprises the steps of:
- the deposit of conductive material has a thickness of between 5 pm and 500 pm.
- the conductive material deposited by the additive manufacturing device on the first conductive track is different from the conductive material contained in the first conductive track initially present on the first layer of the circuit card printed.
- Another aspect of the invention relates to a printed circuit board obtained by a manufacturing process according to any of the aforementioned aspects of the invention.
- the printed circuit board comprises an electronic component provided with:
- First connection means for the circulation of power current said first connection means being connected to the first conductive track having received the deposit of conductive material
- Second connection means for the circulation of control currents, said second connection means being connected to a second conductive track which the first layer comprises, said second conductive track having a thickness less than a thickness of said first conductive track having received the deposition of conductive material.
- the electronic component is a power transistor.
- the electronic component is placed in a cavity of a receiving layer of said electronic component, said receiving layer and said electronic component being covered with the first layer.
- the first conductive track having received the deposit of conductive material has a thickness greater than or equal to 70 pm and the second conductive track has a thickness less than or equal to 35 pm.
- FIG. 1 shows a step diagram of a non-limiting embodiment of a method of manufacturing a printed circuit board according to one aspect of the invention.
- FIG. 2 illustrates, schematically, a printed circuit board produced by implementing the method according to the invention.
- FIG. 3 shows, schematically, another example of a printed circuit board produced by implementing the method according to the invention.
- Figure 1 illustrates a step diagram of a non-limiting embodiment of a process for manufacturing a printed circuit board according to one aspect of the invention.
- Figure 2 shows schematically a printed circuit board obtained by means of the method according to the invention. For the remainder of the description, reference will be made to Figures 1 and 2.
- the method 100 comprises a step 101 of depositing a conductive material 5, by means of an additive manufacturing device, on the first conductive track 3 which is initially presented by the first layer 2 of the printed circuit board 1.
- This additive manufacturing device is also known as a three-dimensional printer.
- This deposit of conductive material 5 makes it possible to increase the thickness e35 of the first conductive track 3.
- this first conductive track 3 having received the deposit of conductive material 5 can be used for the circulation of power currents, in other words, high intensity currents.
- a current is said to be high intensity when it is greater than 5A.
- the second conductive track 4 having not received the deposit of conductive material 5 can, for its part, be used for the circulation of control currents, in other words low intensity currents.
- a current is said to be of low intensity when it is less than 5A.
- the material of the first conductive track 3 is copper and the conductive material 5 deposited by the additive manufacturing device is also copper.
- the material of the first conductive track 3 is copper and the conductive material 5 deposited by the additive manufacturing device is a conductive material other than copper.
- the conductive material 5 deposited has a thickness e5 of between 5 pm and 500 pm, for example 182 pm.
- the method 100 further comprises a step of pre-cutting 102, in a second layer 6, formed of a dielectric material, of the printed circuit board 1, a complementary shape 7 of the deposit of conductive material 5.
- the deposit of conductive material 5 can be inserted into the complementary form 7.
- the method 100 further comprises a step 103 of pressing the first layer 2 with the second layer 6 so that the deposit of conductive material 5 is positioned in the pre-cut complementary shape 7.
- the second layer 6 of the printed circuit board 1 comprises a third conductive track 8.
- the printed circuit board 1 further comprises a metallized hole 9 passing through the first layer 2 and the second layer 6 to electrically connect the first conductive track 3 with the third conductive track 8.
- Figure 3 shows, schematically, another example of a printed circuit board 1 according to a non-limiting aspect of the invention obtained via the method according to the invention.
- the printed circuit board 1 comprises a first layer 2 provided with a first conductive track 3 covered with a deposit of conductive material 5 and a second conductive track 4.
- This first layer 2 comprises also a dielectric material 10 making it possible to electrically insulate the first conductive track 3 covered with the deposit of conductive material 5 and the second conductive track 4.
- This dielectric material 10 can consist of a glass fabric and a resin not polymerized before manufacturing the printed circuit board 1. After manufacturing, this resin is polymerized.
- the printed circuit board 1 also includes a second layer 6 provided with a third conductive track 8.
- This second layer 6 also comprises a dielectric material 11 making it possible to electrically insulate the third conductive track 8.
- This dielectric material 11 can also consist of a glass fabric and a non-polymerized resin before the manufacture of the printed circuit board. After manufacturing, this resin is polymerized
- the printed circuit board 1 further comprises a receiving layer 12 of an electronic component 13.
- the material constituting this receiving layer 12 is also a dielectric material.
- This dielectric material can for example consist of a glass fabric and a polymerized resin.
- the electronic component 13 is placed in a pre-cut cavity 14 of the receiving layer 12 of the electronic component 13.
- the reception layer 12 and the electronic component 13 are arranged between the first layer 2 and the second layer 6 of the printed circuit board 1.
- the electronic component 13 is a gallium nitride power transistor.
- the electronic component 13 is provided with:
- First connection means 15 for the circulation of power currents, the first connection means 15 being connected to the first conductive track 3 having received the deposit of conductive material 5; to this end each of the first connection means 15 is for example connected to a metallized via or a hole filled with a conductive material passing through the first conductive track 3, and
- Second connection means 16 for the circulation of control currents, the second connection means 16 being connected to the second and third conductive tracks 4, 8 which respectively comprise the first layer 2 and the second layer 6; to this end, each of the second connection means 16 is for example connected to a metallized via or a hole filled with a conductive material passing through the second or third conductive tracks 4, 8.
- the second conductive track 4 and the third conductive track 8 have a thickness less than a thickness of the first conductive track 3 having received the deposit of conductive material 5.
- the first conductive track 3 having received the deposit of conductive material 5 has a thickness greater than or equal to 70 ⁇ m.
- the second conductive track 4 and the third conductive track 8 each have a thickness less than or equal to 35 ⁇ m.
- the printed circuit board has a heat dissipation layer 17.
- This heat dissipation layer is placed below the second layer 6 and makes it possible to dissipate the heat emitted by the electronic component 13.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Structure Of Printed Boards (AREA)
- Manufacturing Of Printed Wiring (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202380035471.3A CN119054420A (zh) | 2022-04-21 | 2023-04-12 | 用于制造印刷电路板的方法和印刷电路板 |
EP23722626.1A EP4512217A1 (fr) | 2022-04-21 | 2023-04-12 | Procédé de fabrication d'une carte de circuit imprimé et carte de circuit imprimé |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2203705A FR3134945A1 (fr) | 2022-04-21 | 2022-04-21 | Procede de fabrication d’une carte de circuit imprime |
FRFR2203705 | 2022-04-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023203294A1 true WO2023203294A1 (fr) | 2023-10-26 |
Family
ID=83899441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2023/050523 WO2023203294A1 (fr) | 2022-04-21 | 2023-04-12 | Procédé de fabrication d'une carte de circuit imprimé et carte de circuit imprimé |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4512217A1 (fr) |
CN (1) | CN119054420A (fr) |
FR (1) | FR3134945A1 (fr) |
WO (1) | WO2023203294A1 (fr) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1032371A (ja) * | 1996-05-17 | 1998-02-03 | Furukawa Electric Co Ltd:The | 複合回路基板およびその製造方法 |
US20060145331A1 (en) * | 2004-12-30 | 2006-07-06 | Samsung Electro-Mechanics Co., Ltd. | Printed circuit board including embedded chips and method of fabricating the same using plating |
US20140118976A1 (en) * | 2012-10-30 | 2014-05-01 | Ibiden Co., Ltd. | Printed circuit board, method for manufacturing printed circuit board, and electronic component |
US20190110366A1 (en) * | 2017-10-06 | 2019-04-11 | At&S Austria Technologie & Systemtechnik Aktiengesellschaft | Component Carrier Having at Least a Part Formed as a Three-Dimensionally Printed Structure |
US20190124764A1 (en) * | 2017-10-24 | 2019-04-25 | Gio Optoelectronics Corp | Electronic device and manufacturing method thereof |
FR3089054A1 (fr) * | 2018-11-28 | 2020-05-29 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Fabrication additive de circuits imprimes en 3d |
-
2022
- 2022-04-21 FR FR2203705A patent/FR3134945A1/fr active Pending
-
2023
- 2023-04-12 WO PCT/FR2023/050523 patent/WO2023203294A1/fr active Application Filing
- 2023-04-12 EP EP23722626.1A patent/EP4512217A1/fr active Pending
- 2023-04-12 CN CN202380035471.3A patent/CN119054420A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1032371A (ja) * | 1996-05-17 | 1998-02-03 | Furukawa Electric Co Ltd:The | 複合回路基板およびその製造方法 |
US20060145331A1 (en) * | 2004-12-30 | 2006-07-06 | Samsung Electro-Mechanics Co., Ltd. | Printed circuit board including embedded chips and method of fabricating the same using plating |
US20140118976A1 (en) * | 2012-10-30 | 2014-05-01 | Ibiden Co., Ltd. | Printed circuit board, method for manufacturing printed circuit board, and electronic component |
US20190110366A1 (en) * | 2017-10-06 | 2019-04-11 | At&S Austria Technologie & Systemtechnik Aktiengesellschaft | Component Carrier Having at Least a Part Formed as a Three-Dimensionally Printed Structure |
US20190124764A1 (en) * | 2017-10-24 | 2019-04-25 | Gio Optoelectronics Corp | Electronic device and manufacturing method thereof |
FR3089054A1 (fr) * | 2018-11-28 | 2020-05-29 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Fabrication additive de circuits imprimes en 3d |
Also Published As
Publication number | Publication date |
---|---|
EP4512217A1 (fr) | 2025-02-26 |
CN119054420A (zh) | 2024-11-29 |
FR3134945A1 (fr) | 2023-10-27 |
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