US20210000373A1 - Ear tips capable of capturing bioelectrical signals and providing nerve stimulation - Google Patents
Ear tips capable of capturing bioelectrical signals and providing nerve stimulation Download PDFInfo
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- US20210000373A1 US20210000373A1 US17/024,347 US202017024347A US2021000373A1 US 20210000373 A1 US20210000373 A1 US 20210000373A1 US 202017024347 A US202017024347 A US 202017024347A US 2021000373 A1 US2021000373 A1 US 2021000373A1
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- electrically conductive
- conductive element
- ear tip
- metal
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Abstract
A method of fabricating an ear tip including the steps of: providing an ear tip for an earpiece including a body having first and second ends, an inner wall extending between the first and second ends, and an outer wall connected to the inner wall of the body at the first end and tapering away from the inner wall toward the second end; and forming a first electrically conductive element along the outer surface of the outer wall and an inner surface of the inner wall; or forming a first electrically conductive element on an outer surface of the deformable outer wall and a second electrically conductive element connected to the first electrically conductive element, wherein the second electrically conductive element extends along an inner surface of the outer wall and an outer surface of the inner wall.
Description
- This application is a Divisional Application of and claims priority to U.S. patent application Ser. No. 16/448,849 filed Jun. 21, 2019, and titled “Ear Tips Capable of Capturing Bioelectrical Signals and Providing Nerve Stimulation,” which application is herein incorporated by reference in its entirety.
- This disclosure generally relates to configurations for ear tips for use with earpieces.
- This disclosure is directed to an ear tip that enables capturing of bioelectrical signals and/or providing stimulation of nerves through application of electricity.
- In one aspect, a method of fabricating an ear tip configured to detect one or more health parameters includes the steps of: providing an ear tip, wherein the ear tip includes a body having first and second ends, an inner wall extending between the first and second ends to define a hollow passage, and a deformable outer wall connected to the inner wall of the body at the first end and tapering away from the inner wall toward the second end; and forming at least one electrically conductive element on the deformable outer wall, wherein at least part of the at least one electrically conductive element extends along an inner surface or an outer surface of the inner wall.
- Implementations may include one or more of the following. The step of forming the at least one electrically conductive element can include: aligning a conductive material with the ear tip; and heating the ear tip above a vulcanization temperature of a material forming the ear tip to bond the conductive material to a first portion of the ear tip. The step of forming the at least one electrically conductive element includes extending the at least one electrically conductive element along an outer surface of the outer wall and the inner surface of the inner wall. The step of forming the at least one electrically conductive element includes extending the at least one electrically conductive element along an inner surface of the outer wall and the outer surface of the inner wall. The step of forming the at least one electrically conductive element includes applying the first or second electrically conductive element using screen printing, pad printing, or in-mold decorating. The at least one electrically conductive element can be embodied as an electrical circuit element. The body can be comprised of silicone, polyurethane, polynorbornene, thermoplastic elastomer (TPE), and/or fluoroelastomer. The at least one electrically conductive element can be comprised of a metal pad, metal button, metal foil, metal-salt hybrid, polymeric composite, intrinsically conductive polymer (ICP), and/or conductive fabric.
- In a further aspect, an ear tip for an earpiece includes a body having first and second ends, an inner wall extending between the first and second ends to define a hollow passage to conduct acoustic energy, and a deformable outer wall connected to the inner wall of the body at the first end and tapering away from the inner wall toward the second end. The ear tip further includes a first electrically conductive element arranged on an outer surface of the deformable outer wall, wherein the first electrically conductive element extends along the outer surface of the outer wall and an inner surface of the inner wall.
- Implementations may include one or more of the following. The deformable outer wall forms a generally frustoconical shape around the inner wall. The body is comprised of silicone, polyurethane, polynorbornene, thermoplastic elastomer (TPE), and/or fluoroelastomer. The first electrically conductive element is comprised of a metal pad, metal button, metal foil, metal-salt hybrid, polymeric composite, intrinsically conductive polymer (ICP), and/or conductive fabric. The ear tip further includes a second electrically conductive element arranged in the body proximate to a retaining structure of the ear tip.
- In another aspect, an ear tip for an earpiece includes a body having first and second ends, an inner wall extending between the first and second ends to define a hollow passage to conduct acoustic energy from the acoustic driver, and a deformable outer wall connected to the inner wall of the body at the first end and tapering away from the inner wall toward the second end. The ear tip further includes a first electrically conductive element arranged on an outer surface of the deformable outer wall and a second electrically conductive element connected to the first electrically conductive element, wherein the second electrically conductive element extends along an inner surface of the outer wall and an outer surface of the inner wall.
- Implementations may include one or more of the following. The deformable outer wall forms a generally frustoconical shape around the inner wall. The body is comprised of silicone, polyurethane, polynorbornene, thermoplastic elastomer (TPE), and/or fluoroelastomer. The first electrically conductive element is comprised of a metal pad, metal button, metal foil, metal-salt hybrid, polymeric composite, intrinsically conductive polymer (ICP), and/or conductive fabric. The second electrically conductive element can be embodied as an electrical circuit element. The ear tip can further include a third electrically conductive element arranged in the body proximate to a retaining structure of the ear tip.
- Other features and advantages will be apparent from the description and the claims.
- In the drawings, like reference characters generally refer to the same parts throughout the different views. Also, the drawings are not necessarily to scale, emphasis instead generally being placed upon illustrating the principles of the various examples.
-
FIG. 1 is an example earpiece. -
FIG. 2 is a partial cross-sectional view of an example earpiece. -
FIG. 3 illustrates an example configuration of the earpiece shown inFIG. 2 , shown in a cross-sectional view generally along line 5-5 inFIG. 2 . -
FIG. 4 illustrates an example configuration of the earpiece shown inFIG. 2 , shown in a cross-sectional view generally along line 5-5 inFIG. 2 . -
FIG. 5 illustrates an example configuration of the earpiece shown inFIG. 2 , shown in a cross-sectional view generally along line 5-5 inFIG. 2 . -
FIG. 6 illustrates an example configuration of the earpiece shown inFIG. 2 , shown in a cross-sectional view generally along line 5-5 inFIG. 2 . -
FIG. 7 is a flowchart of an example method of fabricating an ear tip configured to detect one or more bioelectrical signals and/or provide nerve stimulation. - This disclosure is directed to configurations of an ear tip that can detect bioelectrical signals, for example, electroencephalogram (EEG) signals, and other health parameters, and/or deliver an electrical signal to the ear, for example, for nerve stimulation. Typical EEG devices are comprised of a series of electrodes attached to a skull cap. However, these devices are uncomfortable, bulky, inconvenient, and not suitable for daily-life situations. The present disclosure relates to an ear tip capable of measuring bioelectrical signals such as EEG signals from the brain and/or providing nerve stimulation. The ear tip includes a body having first and second ends, an inner wall extending between the first and second ends to define a hollow passage to conduct sound waves, and an outer wall connected to the inner wall of the body at the first end and tapering away from the inner wall toward the second end. The ear tip further includes first and second electrically conductive elements arranged on an outer surface of the deformable outer wall.
- The examples and implementations disclosed or otherwise envisioned herein can be utilized with any suitable earpiece. Examples of suitable earpieces include Bose® Sleepbuds™ (manufactured by Bose Corporation of Framingham, Mass.), ear tips, earbuds, in-ear headphones, over-the-ear headphones, noise-blocking earplugs, and hearing aids. However, the disclosure is not limited to these devices, and thus the disclosure and embodiments disclosed herein can encompass any earpiece configured to be placed at least partially within human ears.
- Turning now to the figures,
FIG. 1 shows anexample earpiece 100 including an ear tip that is configured to fit at least partially into a person's ear canal and a retaining structure configured to hold the ear tip in place when worn.FIG. 2 is a partial cross-sectional view ofearpiece 100. The following should be viewed in light ofFIGS. 1-2 . Earpiece 100 can includebody 102, andhollow passage 104, and retaininglegs 106. AlthoughFIGS. 1-2 show retaininglegs 106 as one embodiment of a retaining structure, this disclosure is not limited to such a configuration. Any type of retaining structure is contemplated. Alternatively, the retaining structure can be omitted altogether. Theretaining legs 106 are optional. -
Body 102 includesfirst end 108 andsecond end 110 opposite thefirst end 108.Second end 110 is proximate to theretaining legs 102.Body 104 further includesinner wall 107 extending between thefirst end 108 and thesecond end 110.Inner wall 107 defines and surroundshollow passage 104 which can be configured to conduct sound waves.Body 102 also includesouter wall 112 connected to theinner wall 107 at thefirst end 108.Outer wall 112 tapers away from theinner wall 107 toward thesecond end 110. In example aspects,outer wall 112 is frustoconical in shape. As shown inFIGS. 1-2 ,outer wall 112 tapers toward thesecond end 110 but does not necessarily reach thesecond end 110. In alternate embodiments not shown,outer wall 112 could extend to thesecond end 110 or beyondsecond end 110.Body 102 can be made of any suitable soft, flexible materials, including, for example, silicone, polyurethane, polynorbornene (e.g., Norsorex® material available from D-NOV GmbH of Vienna, Austria), thermoplastic elastomer (TPE), and/or fluoroelastomer. -
Earpiece 100 includes electricallyconductive elements FIG. 1 shows one particular configuration of an ear tip with electricallyconductive elements conductive element 124 arranged onbody 102, this disclosure is not limited to such a configuration, and any number of electrically conductive elements can be placed in any configuration onearpiece 100 as long as the electrically conductive elements are arranged to contact skin within the ear when the earpiece is worn by a user. It should be appreciated that only two electrically conductive elements may be used to function as electrodes. - Examples of electrically conductive elements include a metal pad, metal button, metal foils (e.g., gold, silver), metal-salt hybrids (e.g., silver/silver-chloride), polymeric composites (e.g., rubbers compounded with conductive fillers such as carbon black, carbon nanotubes, graphene, silver, glass-coated silver), intrinsically conductive polymers (e.g., poly(3,4-ethylenedioxythiophene) polystyrene sulfonate or PEDOT:PSS), and/or conductive fabric (e.g., fabrics with conductive yarns, fabrics coated with conductive materials). Preferably, the electrically conductive elements are made of soft, flexible materials. The electrically conductive elements can be incorporated on to the ear tip using an ink and applying it using screen printing, pad printing, or in-mold decorating. Alternatively, the conductive elements can be incorporated wholly on to the ear tip via injection, transfer or compression molding.
- Electrically
conductive elements conductive elements -
Earpiece 100 may include an embedded integrated circuit, for example, inside thebody 102. In examples,earpiece 100 is communicably coupled with an integrated circuit that is separate and remotely located, for example, in a computer or a mobile device. The integrated circuit can include a data processor, a memory, and a communication processor. Commands to be executed by the processor can be obtained via the communication processor. The communication processor facilitates wired or wireless communication forearpiece 100 and can be facilitated via one or more antennas, for example. The communication processor can facilitate communication with one or more networks or other devices, for example, by using wireless methods that are known, including but not limited to Wi-Fi, Bluetooth, 3G, 4G, LTE, and/or ZigBee, among others.Earpiece 100 can further include an embedded power source (e.g., a battery) required to carry out various functionalities involving the integrated circuit and the one or more electronic components described herein. - Various example configurations of earpieces having electrically conducting elements capable of capturing bioelectrical signals and/or providing nerve stimulation are shown in
FIGS. 3 through 6 . -
FIGS. 3 illustrates a configuration ofearpiece 100 having first and second electricallyconductive elements outer wall 112.Conductive elements outer wall 112 and filing the holes with silver/silver-chloride (Ag/AgCl). InFIG. 3 ,inner wall 107 includes first and second conductive leads 130 and 132 (e.g., metal-plated pads, such as gold-plated discs) that are configured to electrically connect with first and second electricallyconductive elements outer wall 112 is deformed towardinner wall 107 asearpiece 100 is placed in the ear of an individual. The collapsing of outer wall 112 (shown inFIG. 3 in the shape of an umbrella, or frustoconical) allows for contact of electricallyconductive elements outer wall 112, thereby establishing and transmitting electrical signals to electronics (not shown) inbody 102 of theearpiece 100. -
FIG. 4 illustrates another configuration ofearpiece 100 having first and second electricallyconductive elements outer wall 112. InFIG. 4 ,inner wall 107 includes first and secondconductive pins 140 and 142 (e.g., pogo pins or spring loaded connectors) that are configured to electrically connect with first and second electricallyconductive elements outer wall 112 is deformed towardinner wall 107 asearpiece 100 is placed in the ear of an individual. The collapsing of outer wall 112 (shown inFIG. 4 in the shape of an umbrella, or frustoconical) allows for contact of electricallyconductive elements conductive pins outer wall 112, thereby establishing and transmitting electrical signals to electronics (not shown) inbody 102 of theearpiece 100. Optionally, angled through-holes may be created in the deformableouter wall 112 such that theconductive pins outer wall 112 is collapsed when placed in the ear. -
FIG. 5 illustrates a further configuration ofearpiece 100 having first and second electricallyconductive elements outer wall 112. InFIG. 5 ,earpiece 100 includes first and secondelectrical circuit elements 150 and 152 (e.g., conductive fabric, such as fabric available from Eschler Textil GmbH and coated with silver/silver-chloride) connected to first and second electricallyconductive elements electrical circuit elements outer wall 112 and an outer surface ofinner wall 107. The electrical circuit elements are connected to electronics (not shown) inbody 102 of theearpiece 100, thereby allowing transmission of electrical signals whenearpiece 100 is placed in the ear of an individual. -
FIG. 6 illustrates a configuration ofearpiece 100 having first and second electricallyconductive elements 160 and 162 (e.g., conductive fabric, such as fabric available from Eschler Textil GmbH and coated with silver/silver-chloride) each extending along an outer surface of deformableouter wall 112 and an inner surface ofinner wall 107. The electrical circuit elements are connected to electronics (not shown) inbody 102 of theearpiece 100, thereby allowing transmission of electrical signals whenearpiece 100 is placed in the ear of an individual. -
FIG. 7 is a flowchart of an example method of fabricating an ear tip (e.g., earpiece 100) having two or more electrically conductive elements (e.g., electricallyconductive elements 120 and/or 122). Instep 210, an ear tip is provided. For example, the ear tip may include abody 102 having first and second ends 108 and 110, aninner wall 107 extending between the first and second ends 108 and 110 to define ahollow passage 104 to conduct acoustic energy, and a deformableouter wall 112 connected to theinner wall 107 of thebody 102 at thefirst end 108 and tapering away from theinner wall 107 toward thesecond end 110, as illustrated for example inFIG. 1 of the present disclosure. - In
step 220, first and second electrically conductive elements are formed on an outer surface of the deformable outer wall of the ear tip. Examples of electrically conductive elements include a metal pad, metal button, metal foils (e.g., gold, silver), metal-salt hybrids (e.g., silver/silver-chloride), polymeric composites (e.g., rubbers compounded with conductive fillers such as carbon black, carbon nanotubes, graphene, silver, glass-coated silver), intrinsically conductive polymers (e.g., poly(3,4-ethylenedioxythiophene) polystyrene sulfonate or PEDOT:PSS), and/or conductive fabric (e.g., fabrics with conductive yarns, fabrics coated with conductive materials). The electrically conductive elements are preferably made of soft, flexible materials. The electrically conductive elements can be incorporated on to the ear tip using an ink and applying it using screen printing, pad printing, or in-mold decorating. Alternatively, the conductive elements can be incorporated wholly on to the ear tip via injection, transfer or compression molding. It should be appreciated that any number of electrically conductive elements (e.g., two or more) can be placed in any configuration on an earpiece as long as the electrically conductive elements are arranged to contact skin within the ear when the earpiece is worn by a user. - Optionally, in
step 230, conductive material in the first and second electrically conductive elements is aligned with the ear tip and the ear tip is heated above a vulcanization temperature of a material, causing the conductive material to bond to a first portion of the ear tip. - The electrically conductive elements can also be incorporated on to the ear tip using an ink and applying it using screen printing, pad printing, or in-mold decorating. Further, the conductive elements can be incorporated wholly on to the ear tip via injection, transfer or compression molding.
- To complete the electronic circuit and allow capability of transmission of bioelectric signals and/or nerve stimulation, the conductive elements may be connected to electronics (e.g., integrated circuit, power source, etc.) in the body of the earpiece.
- In one option, in step 240, first and second conductive leads (e.g., spring pins or metal-plated pads) are formed on an outer surface of the inner wall to electrically connect with the first and second electrically conductive elements when the outer wall is deformed toward the inner wall, as illustrated for example in
FIGS. 3 and 4 of the present disclosure. - In another option, in
step 250, first and second electrically conductive elements are formed along the outer surface of the outer wall and extending along an inner surface of the inner wall (e.g., using conductive fabrics, such as fabric available from Eschler Textil GmbH and coated with silver/silver-chloride), as illustrated for example inFIG. 6 of the present disclosure. - In a further option, in step 260, first and second electrical circuit elements are formed and connected to the first and second electrically conductive elements, with the first and second electrical circuit elements each extending along an inner surface of the outer wall and an outer surface of the inner wall (e.g., using conductive fabrics, such as fabric available from Eschler Textil GmbH and coated with silver/silver-chloride), as illustrated for example in
FIG. 6 of the present disclosure. - The various configurations of ear tips described in the present disclosure may eliminate or reduce the need for hardwiring of electrodes in earpieces and provide a more effective approach for handling the electrode lead-out. Additionally, the various configurations of ear tips described in the present disclosure allow for in-ear EEG measurement and may also enable additional features for earpieces and headsets, such as donning and doffing detection. Further, the various configurations of ear tips described in the present disclosure may be used to deliver an electrical signal to the ear, for example, for nerve stimulation.
- While several inventive examples have been described and illustrated herein, those of ordinary skill in the art will readily envision a variety of other means and/or structures for performing the function and/or obtaining the results and/or one or more of the advantages described herein, and each of such variations and/or modifications is deemed to be within the scope of the inventive examples described herein. More generally, those skilled in the art will readily appreciate that all parameters, dimensions, materials, and configurations described herein are meant to be exemplary and that the actual parameters, dimensions, materials, and/or configurations will depend upon the specific application or applications for which the inventive teachings is/are used. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific inventive examples described herein. It is, therefore, to be understood that the foregoing examples are presented by way of example only and that, within the scope of the appended claims and equivalents thereto, inventive examples may be practiced otherwise than as specifically described and claimed. Inventive examples of the present disclosure are directed to each individual feature, system, article, material, and/or method described herein. In addition, any combination of two or more such features, systems, articles, materials, and/or methods, if such features, systems, articles, materials, and/or methods are not mutually inconsistent, is included within the inventive scope of the present disclosure.
- Other implementations are within the scope of the following claims and other claims to which the applicant may be entitled.
Claims (20)
1. A method of fabricating an ear tip, comprising the steps of:
providing an ear tip, wherein the ear tip comprises a body having first and second ends, an inner wall extending between the first and second ends to define a hollow passage, and a deformable outer wall connected to the inner wall of the body at the first end and tapering away from the inner wall toward the second end; and
forming at least one electrically conductive element on the deformable outer wall, wherein at least part of the at least one electrically conductive element extends along an inner surface or an outer surface of the inner wall.
2. The method of claim 1 , wherein the step of forming the at least one electrically conductive element comprises aligning a conductive material with the ear tip.
3. The method of claim 2 , wherein the step of forming the at least one electrically conductive element comprises heating the ear tip above a vulcanization temperature of a material forming the ear tip to bond the conductive material to a first portion of the ear tip.
4. The method of claim 1 , wherein the step of forming the at least one electrically conductive element comprises extending the at least one electrically conductive element along an outer surface of the outer wall and the inner surface of the inner wall.
5. The method of claim 1 , wherein the step of forming the at least one electrically conductive element comprises extending the at least one electrically conductive element along an inner surface of the outer wall and the outer surface of the inner wall.
6. The method of claim 1 , wherein the step of forming the at least one electrically conductive element comprises applying the at least one electrically conductive element using screen printing or pad printing or in-mold decorating.
7. The method of claim 1 , wherein the at least one electrically conductive element is an electrical circuit element.
8. The method of claim 1 , wherein the body is comprised of silicone, polyurethane, polynorbornene, thermoplastic elastomer (TPE), and/or fluoroelastomer.
9. The method of claim 1 , wherein the at least one electrically conductive element is comprised of a metal pad, metal button, metal foil, metal-salt hybrid, polymeric composite, intrinsically conductive polymer (ICP), and/or conductive fabric.
10. An ear tip for an earpiece, comprising:
a body having first and second ends, an inner wall extending between the first and second ends to define a hollow passage to conduct acoustic energy, and a deformable outer wall connected to the inner wall of the body at the first end and tapering away from the inner wall toward the second end; and
a first electrically conductive element arranged on an outer surface of the deformable outer wall, wherein the first electrically conductive element extends along the outer surface of the outer wall and an inner surface of the inner wall.
11. The ear tip of claim 10 , wherein the deformable outer wall forms a generally frustoconical shape around the inner wall.
12. The ear tip of claim 10 , wherein the body is comprised of silicone, polyurethane, polynorbornene, thermoplastic elastomer (TPE), and/or fluoroelastomer.
13. The ear tip of claim 10 , wherein the first electrically conductive element is comprised of a metal pad, metal button, metal foil, metal-salt hybrid, polymeric composite, intrinsically conductive polymer (ICP), and/or conductive fabric.
14. The ear tip of claim 10 , further comprising a second electrically conductive element arranged in the body proximate to a retaining structure of the ear tip.
15. An ear tip for an earpiece, comprising:
a body having first and second ends, an inner wall extending between the first and second ends to define a hollow passage to conduct acoustic energy, and a deformable outer wall connected to the inner wall of the body at the first end and tapering away from the inner wall toward the second end;
a first electrically conductive element arranged on an outer surface of the deformable outer wall; and
a second electrically conductive element connected to the first electrically conductive element, wherein the second electrically conductive element extends along an inner surface of the outer wall and an outer surface of the inner wall.
16. The ear tip of claim 15 , wherein the deformable outer wall forms a generally frustoconical shape around the inner wall.
17. The ear tip of claim 15 , wherein the body is comprised of silicone, polyurethane, polynorbornene, thermoplastic elastomer (TPE), and/or fluoroelastomer.
18. The ear tip of claim 15 , wherein the first electrically conductive element and/or the second electrically conductive element is comprised of a metal pad, metal button, metal foil, metal-salt hybrid, polymeric composite, intrinsically conductive polymer (ICP), and/or conductive fabric.
19. The ear tip of claim 15 , wherein the second electrically conductive element is an electrical circuit element.
20. The ear tip of claim 15 , further comprising a third electrically conductive element arranged in the body proximate to a retaining structure of the ear tip.
Priority Applications (1)
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US17/024,347 US20210000373A1 (en) | 2019-06-21 | 2020-09-17 | Ear tips capable of capturing bioelectrical signals and providing nerve stimulation |
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US16/448,849 US10835145B1 (en) | 2019-06-21 | 2019-06-21 | Ear tips capable of capturing bioelectrical signals and providing nerve stimulation |
US17/024,347 US20210000373A1 (en) | 2019-06-21 | 2020-09-17 | Ear tips capable of capturing bioelectrical signals and providing nerve stimulation |
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US16/448,849 Division US10835145B1 (en) | 2019-06-21 | 2019-06-21 | Ear tips capable of capturing bioelectrical signals and providing nerve stimulation |
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US17/024,347 Abandoned US20210000373A1 (en) | 2019-06-21 | 2020-09-17 | Ear tips capable of capturing bioelectrical signals and providing nerve stimulation |
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JP7409613B2 (en) | 2021-01-29 | 2024-01-09 | 株式会社プロアシスト | Electrode device for head electrical signal detection |
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USD941274S1 (en) * | 2019-10-18 | 2022-01-18 | Bose Corporation | Ear tip |
USD945400S1 (en) * | 2019-10-30 | 2022-03-08 | Chenggang Tian | Wireless earbud |
USD947156S1 (en) * | 2019-11-22 | 2022-03-29 | Bose Corporation | Ear tip |
US11523208B2 (en) * | 2020-03-18 | 2022-12-06 | Advanced Semiconductor Engineering, Inc. | Eartip and a wearable device including an eartip |
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USD960131S1 (en) * | 2020-11-10 | 2022-08-09 | Shenghui Zhu | Pair of earphones |
USD954028S1 (en) * | 2021-04-26 | 2022-06-07 | Shaozheng Gao | Earphone cover |
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US20230019715A1 (en) * | 2021-07-15 | 2023-01-19 | Advanced Semiconductor Engineering, Inc. | Detection module |
USD963155S1 (en) * | 2021-08-02 | 2022-09-06 | Shenzhen Taipuda Technology Co., Ltd. | Swimming earplugs |
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WO2020257551A1 (en) | 2020-12-24 |
US10835145B1 (en) | 2020-11-17 |
EP3986249A1 (en) | 2022-04-27 |
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