EP4162296A1 - Système de détection radar d'un véhicule - Google Patents
Système de détection radar d'un véhiculeInfo
- Publication number
- EP4162296A1 EP4162296A1 EP21728931.3A EP21728931A EP4162296A1 EP 4162296 A1 EP4162296 A1 EP 4162296A1 EP 21728931 A EP21728931 A EP 21728931A EP 4162296 A1 EP4162296 A1 EP 4162296A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radar
- layer
- detection system
- layers
- radar detection
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
- H01Q1/422—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/22—RF wavebands combined with non-RF wavebands, e.g. infrared or optical
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9327—Sensor installation details
- G01S2013/93271—Sensor installation details in the front of the vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9327—Sensor installation details
- G01S2013/93272—Sensor installation details in the back of the vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9327—Sensor installation details
- G01S2013/93275—Sensor installation details in the bumper area
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9327—Sensor installation details
- G01S2013/93277—Sensor installation details in the lights
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/027—Constructional details of housings, e.g. form, type, material or ruggedness
Definitions
- the present invention relates to a radar detection system for a vehicle. It finds a particular but nonlimiting application in motor vehicles.
- a radar detection system 5 of a vehicle well known to those skilled in the art illustrated in FIG. 1 comprises:
- a radar sensor 50 configured to transmit / receive a plurality of radar waves S5,
- a luminous element 51 arranged opposite said radar sensor and comprising at least one light source 510 configured to emit light rays, and a plurality of layers 511 including a transparent layer 511a configured to diffuse said light rays.
- the transparent layer 511a is delimited by two layers 511b and 511c.
- a drawback of this state of the art is that when the light element 51 is crossed by the radar waves from the radar sensor 50, the different layers 511 of the light element disturb the radar waves S5 emitted. Indeed, the different layers 511 represent different media that the radar waves must pass through. Each transition from one medium to another results in double reflections, namely the radar waves are reflected and then the reflections which are directed in the opposite direction to the radar waves are again reflected. There are thus several series of reflections S5 ′ illustrated in FIG. 1 of the radar waves S5 on these different layers 511, and on the surface of the radar sensor 50 itself. The reflected S5 ’radar waves mix with the transmitted S5 radar waves, which disrupts the emission of said radar waves.
- the present invention aims to provide a radar detection system of a vehicle which overcomes the mentioned drawback.
- the invention provides a radar detection system for a vehicle, said radar detection system, comprising:
- a radar sensor configured to transmit / receive a plurality of radar waves
- said radar detection system may further include one or more additional characteristics taken alone or in any technically possible combination, among the following.
- said transparent layer is a light guide.
- said transparent layer is delimited by two layers including a dark layer.
- said dark layer is placed opposite said radar sensor.
- the other layer which delimits said transparent layer is a reflecting layer.
- one of the layers other than the transparent layer is configured to produce a pattern.
- the dielectric permittivities of said layers are between 2.4 and 3.5.
- said radar sensor is a millimeter wave or microwave or microwave radar sensor
- said radar sensor operates at a radar frequency between 76GHz and 81GHz.
- said layer which produces a pattern is a reflective layer.
- said transparent layer is an optical element configured to propagate the light rays from said at least one light source and direct them towards another layer.
- said other layer is a reflective layer.
- said transparent layer is made of transparent polycarbonate
- said dark layer is made of black polycarbonate
- said reflecting layer is made of indium coated polycarbonate.
- FIG. 1 is a schematic view of a radar detection system of a vehicle according to the prior art, the radar detection system comprising a radar sensor and a light element with at least one light source and a plurality of layers,
- FIG. 2 is a schematic view of a radar detection system of a vehicle, the radar detection system comprising a radar sensor and a light element with at least one light source and a plurality of layers, according to an embodiment not limiting the invention,
- FIG. 3 is a schematic view of the radar sensor of the radar detection system of FIG. 2, according to a non-limiting embodiment
- FIG. 4 is a schematic front view of a pattern produced in one of the layers of the light element of the radar detection system of FIG. 2, according to a non-limiting embodiment
- FIG. 5 is a schematic view of radar wave reflections from the radar sensor on said plurality of layers of the light element of the radar detection system of Figure 2, said plurality of layers being seen as a single layer by the radar waves which pass through it and on which said radar waves are reflected, according to a non-limiting embodiment.
- the vehicle 2 is a motor vehicle.
- motor vehicle is meant any type of motor vehicle. This embodiment is taken as a non-limiting example in the remainder of the description. In the remainder of the description, the vehicle 2 is thus otherwise called motor vehicle 2.
- the radar detection system 1 is integrated behind the grille at the front of the motor vehicle 2.
- the Radar detection system is integrated in the grille at the rear of the motor vehicle 2.
- the radar detection system 1 comprises:
- the radar sensor 10 is a radar for detecting objects 3 (pedestrian, bicycle, vehicle, tree, etc.) which are located in the external environment of the vehicle. motor vehicle 2.
- objects 3 located in the external environment of the vehicle. motor vehicle 2.
- a non-limiting example of an object 3 is illustrated in FIG. 3. It is a pedestrian in the non-limiting example.
- the radar sensor 10 is a millimeter wave (between 24 GHz and 300 GHz) or microwave (between 300 MHz and 79 GHz) or microwave (between 1 GHz and 300 GHz) radar sensor.
- the radar sensor 10 operates at a radar frequency of between 76 and 81 GHz.
- the radar sensor 10 is configured to transmit / receive radar waves S1, S2.
- the radar sensor 10 comprises:
- a transmitter 100 configured to generate a plurality of SI radar waves, otherwise called SI primary radar waves,
- a receiver 101 configured to process a plurality of radar waves S2, otherwise called secondary radar waves S2,
- a single electronic component can be used for both transmission and reception functions.
- Said transmitter 100 is configured to generate primary radar waves SI, which when they encounter an object 3 in the external environment of the vehicle 2 are reflected (bounced back) on said object 3.
- the radar waves thus reflected are waves transmitted back to the radar sensor 10.
- the primary radar waves SI and the secondary radar waves S2 are radio frequency waves. The operation of a radar sensor 10 being known to those skilled in the art, it is not described in more detail here.
- the radar detection system 1 further comprises an electronic control unit 14 configured to analyze the secondary radar waves S2 processed by the receiver 101 and in deduce whether there is an object 3 in the external environment of the motor vehicle 2. It will be noted that the analysis can also be done directly in the radar sensor 10 in another non-limiting embodiment.
- the radar sensor 10 is disposed facing said light element 11, centered on the light element 11. It is disposed behind the element. light 11 along a through axis Ax (otherwise called transverse axis) of the motor vehicle 2 which passes through the light element 11, said through axis Ax extending in a direction opposite to the movement of the motor vehicle 2.
- the motor vehicle 2 moves forward.
- the radar sensor 10 is fixed to the light element 11. In a nonlimiting example, it is hung by means of fixing clips (not illustrated).
- the light element 11 comprises:
- a plurality of layers 111 including a transparent layer 111a is a plurality of layers 111 including a transparent layer 111a.
- the light source 110 is configured to emit light rays RI which are propagated by the transparent layer 111a.
- said at least one light source 110 is a semiconductor light source.
- said semiconductor light source forms part of a light emitting diode.
- light-emitting diode is meant any type of light-emitting diode, whether in non-limiting examples of LEDs (“Light Emitting Diode”), OLED (“organic LED”), AMOLED (Active-Matrix-Organic LED), or FOLED (Flexible OLED).
- said at least one light source 10 is a bulb with a filament. In a nonlimiting embodiment illustrated in FIG.
- the luminous element 11 comprises two light sources 110.
- This nonlimiting embodiment is taken as a nonlimiting example in the remainder of the description.
- the two light sources 110 are arranged on either side of the light element 11. Thus, they are offset relative to the light element 11 and therefore by in relation to its different layers.
- the transparent layer 111a is an optical element configured to propagate the light rays RI from the two light sources 110 and direct them towards another layer 111c.
- the transparent layer 111a is a light guide.
- the transparent layer 111a is delimited by two layers 111 including a dark layer 111b.
- the other layer 111c which delimits the transparent layer 111a is a reflecting layer.
- the transparent layer 111a is configured to propagate the light rays RI from the two light sources 110 and project them through the reflecting layer 111c and also to project them directly through the pattern 13 described. later if such a pattern 13 is present.
- the dark layer 111b extends along the transparent layer 111a on the side opposite to the reflective layer 111c.
- the dark layer 111b is thus located behind the reflective layer 111c along the transverse axis Ax.
- the dark layer 111b is opaque or semi-opaque.
- the dark layer 111b is located opposite the radar sensor 10. The latter is thus located behind the dark layer 111b along the transverse axis Ax.
- the dark layer 111b is made of black polycarbonate.
- the dark layer 111b is a dark paint which covers the side of the transparent layer 111a opposite to the reflective layer 111c.
- the reflective layer 111c is a layer visible to an observer from outside the motor vehicle 2.
- the reflective layer 111c is thus located in front of the transparent layer 111a along the transverse axis Ax. In a nonlimiting embodiment, it extends along the transparent layer 111a. It is a reflective layer of light. It makes it possible to obtain a mirror effect.
- the reflective layer 111c is made of indium, silicon oxide, titanium or any other reflective material. These materials make it possible to produce a reflective layer 111c which is sufficiently thin so that the radar waves S1, S2 from the radar sensor 10 can pass through.
- the reflective layer 111c is composed of a stack of layers of said reflective material. This is the case for silicon oxide in a non-limiting example.
- the reflective layer 111c is configured to produce a pattern 13.
- the pattern 13 is produced by laser engraving.
- areas 130 are cut by laser engraving in the reflecting layer 111c. They let the light rays RI from the light sources 110 pass.
- the pattern 13 makes it possible to have a light signature when the two light sources 110 are on.
- the pattern 13 is a logo. The signature is thus the logo of the manufacturer of the motor vehicle 2 in a non-limiting example.
- the radar sensor 10 is placed behind the pattern 13 along the transverse axis Ax.
- the plurality of layers 111 is crossed by the radar waves SI emitted by the radar sensor 10. A part of these radar waves SI is reflected on said plurality of layers 111 and produces reflections. SI ', otherwise called parasitic reflections or parasitic waves.
- the plurality of layers 111 of the luminous element 11 have different refractive indices of light n. Furthermore, the plurality of layers 111 of the luminous element 11 have substantially equal dielectric permittivities e.
- the transparent layer 111a and the two layers which delimit it, namely the dark layer 111b and the reflective layer 111c in the non-limiting example taken respectively exhibit refractive indices of light ni, n2, n3 different. This makes it possible to reflect the light rays RI from the light sources 110 and to orient them correctly at the desired location, here towards the layer visible from the outside of the motor vehicle 2, namely the reflective layer 111c in the non-limiting example. taken.
- the transparent layer 111a the dark layer 111b and the reflecting layer 111c in the non-limiting example taken respectively have dielectric permittivities e ⁇ , e2, e3 which are substantially equal.
- their dielectric permittivity e ⁇ , e2, e3 is between 2.4 and 3.5. This makes it possible to significantly reduce the reflections of the transmitted SI radar waves. There will be less reflections, called parasitic reflections, which interfere with the emission of said SI radar waves. Therefore, the detection of an object 3 will be more efficient. As illustrated in FIG.
- the plurality of layers 111a, 111b, 111c, of the luminous element 11 is seen by the radar waves SI emitted as a single layer 111 which is therefore crossed by said radar waves SI. Therefore, there will only be a series of SI 'reflections on this layer. Indeed, as the layers 111a, 111b, 111c have dielectric permittivities e ⁇ , e2, e3 which are substantially equal, they are seen as the same medium by the radar waves SI. They will thus have the same propagation effect on the SI radar waves without these SI radar waves being disturbed by internal reflections which would be due to discontinuities in dielectric permittivities. This eliminates the need for discontinuities in dielectric permittivities.
- the transparent layer 111a will be composed of transparent polycarbonate
- the dark layer 111b will be composed of black polycarbonate
- the reflective layer 111c will be composed of polycarbonate coated with indium (thin layers of a few tens of nanometers in a non-limiting embodiment).
- black polycarbonate it is possible to have a dielectric permittivity e2 of 2.49, 2.57 and 2.95.
- a dielectric permittivity e3 of 2.77. It will be noted that the thin layers of indium do not significantly change the dielectric permittivity of the polycarbonate (thin layers with a thickness of nanometers).
- the transparent layer 111a is formed of prisms and / or micro-prisms.
- the transparent layer 111a can be delimited by two dark layers instead of a dark layer and a reflective layer.
- the plurality of layers 111 of the luminous element 11 can comprise more than three layers.
- the plurality of layers 111 can comprise at least one layer of air with the different layers other than said at least one layer of air of substantially equal dielectric permittivity.
- the transparent layer 111a is separated from the dark layer 111c by a layer of air, and / or from the reflecting layer 111c by another layer of air.
- the number of reflections will decrease with respect to a plurality of layers of different dielectric permittivity including one or more layers of air of dielectric permittivity also different from the other layers.
- the two light sources 110 are arranged facing the dark layer 111b on a side opposite to the reflecting layer 111c.
- the radar detection system 1 is placed in a lighting device of the vehicle 2.
- the lighting device is a headlight or a rear light.
- the radar sensor 10 comprises a plurality of transmitters 100 and a plurality of receivers 101.
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Security & Cryptography (AREA)
- Traffic Control Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2006019A FR3111195A1 (fr) | 2020-06-09 | 2020-06-09 | Système de détection radar d’un véhicule |
| PCT/EP2021/064525 WO2021249806A1 (fr) | 2020-06-09 | 2021-05-31 | Système de détection radar d'un véhicule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4162296A1 true EP4162296A1 (fr) | 2023-04-12 |
Family
ID=74045459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21728931.3A Pending EP4162296A1 (fr) | 2020-06-09 | 2021-05-31 | Système de détection radar d'un véhicule |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12601835B2 (fr) |
| EP (1) | EP4162296A1 (fr) |
| CN (1) | CN115698762A (fr) |
| FR (1) | FR3111195A1 (fr) |
| WO (1) | WO2021249806A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7510563B2 (ja) * | 2020-07-10 | 2024-07-03 | テレフオンアクチーボラゲット エルエム エリクソン(パブル) | レーダ対応ユーザ機器と他のユーザ機器との共存動作 |
| DE102021128982A1 (de) | 2021-11-08 | 2023-05-11 | Marelli Automotive Lighting Reutlingen (Germany) GmbH | Sensorvorrichtung |
| EP4345491A1 (fr) * | 2022-09-30 | 2024-04-03 | Aptiv Technologies Limited | Capteur radar pour un véhicule et procédé d'intégration d'un capteur radar dans un véhicule |
| DE102022131928A1 (de) * | 2022-12-02 | 2024-06-13 | Bayerische Motoren Werke Aktiengesellschaft | Abdeckvorrichtung für einen Radarsensor, Radarsensorvorrichtung, Kraftfahrzeug und Verfahren zur Herstellung einer Abdeckvorrichtung |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3755809B2 (ja) * | 2000-10-27 | 2006-03-15 | 本田技研工業株式会社 | 電波透過性外装部品及びその製造方法 |
| DE102013221055A1 (de) * | 2013-10-17 | 2015-04-23 | Robert Bosch Gmbh | Kombination aus Radarsensor und Verkleidungsteil für ein Kraftfahrzeug |
| DE102015003207A1 (de) * | 2015-03-13 | 2016-09-15 | Covestro Deutschland Ag | Ziervorrichtung für ein Kraftfahrzeug |
| DE102015210464A1 (de) * | 2015-06-08 | 2016-12-08 | Conti Temic Microelectronic Gmbh | Gehäuse für einen Radarsensor für ein Fahrzeug |
| DE102018111438A1 (de) * | 2018-05-14 | 2019-11-14 | Automotive Lighting Reutlingen Gmbh | Radom |
| DE102018005592A1 (de) * | 2018-07-16 | 2020-01-16 | Daimler Ag | Radomabdeckung |
| DE102019124507A1 (de) * | 2018-09-13 | 2020-03-19 | Magna Closures Inc. | Zirkular polarisiertes kraftfahrzeugradar für ein verbessertes signal-rausch-verhältnis |
| WO2020078916A2 (fr) * | 2018-10-15 | 2020-04-23 | Motherson Innovations Company Ltd. | Radôme décoratif et son procédé de production |
| JP2022542791A (ja) * | 2019-07-29 | 2022-10-07 | マザーソン・イノベーションズ・カンパニー・リミテッド | 第1表面または第2表面装飾レドーム |
-
2020
- 2020-06-09 FR FR2006019A patent/FR3111195A1/fr active Pending
-
2021
- 2021-05-31 WO PCT/EP2021/064525 patent/WO2021249806A1/fr not_active Ceased
- 2021-05-31 US US18/000,831 patent/US12601835B2/en active Active
- 2021-05-31 CN CN202180039138.0A patent/CN115698762A/zh active Pending
- 2021-05-31 EP EP21728931.3A patent/EP4162296A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US12601835B2 (en) | 2026-04-14 |
| CN115698762A (zh) | 2023-02-03 |
| US20230314601A1 (en) | 2023-10-05 |
| FR3111195A1 (fr) | 2021-12-10 |
| WO2021249806A1 (fr) | 2021-12-16 |
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Legal Events
| Date | Code | Title | Description |
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