TREA

Circuit arrangements in which low-frequency speech signals proceed in one direction on the line, while speech signals proceeding in the other direction on the line are modulated on a high-frequency carrier signal

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  • CPC
  • H04M1/78
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Parent Industries

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION H04M1/00Substation equipment

Current Industry

H04M1/78Circuit arrangements in which low-frequency speech signals proceed in one direction on the line, while speech signals proceeding in the other direction on the line are modulated on a high-frequency carrier signal
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Earphone without covering an ear canal
    • Patent number 12,238,470
    • Issue date Feb 25, 2025
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic device
    • Patent number 12,207,034
    • Issue date Jan 21, 2025
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output apparatus
    • Patent number 12,160,696
    • Issue date Dec 3, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output apparatus and methods thereof
    • Patent number 12,133,039
    • Issue date Oct 29, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output apparatus
    • Patent number 12,133,037
    • Issue date Oct 29, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output apparatus
    • Patent number 12,126,953
    • Issue date Oct 22, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Open earphone
    • Patent number 12,120,478
    • Issue date Oct 15, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output apparatus
    • Patent number 12,101,587
    • Issue date Sep 24, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Microphone noise reduction system and smart glasses using the system
    • Patent number 12,096,176
    • Issue date Sep 17, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output device
    • Patent number 12,075,207
    • Issue date Aug 27, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output device and components thereof
    • Patent number 12,010,475
    • Issue date Jun 11, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output device
    • Patent number 11,985,465
    • Issue date May 14, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output device
    • Patent number 11,985,466
    • Issue date May 14, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic device
    • Patent number 11,930,314
    • Issue date Mar 12, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output device and noise reduction and sound transmission d...
    • Patent number 11,917,352
    • Issue date Feb 27, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Open earphone
    • Patent number 11,856,351
    • Issue date Dec 26, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output device
    • Patent number 11,838,712
    • Issue date Dec 5, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output device
    • Patent number 11,838,713
    • Issue date Dec 5, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output apparatus
    • Patent number 11,818,529
    • Issue date Nov 14, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output apparatus and method thereof
    • Patent number 11,743,627
    • Issue date Aug 29, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output apparatus
    • Patent number 11,706,556
    • Issue date Jul 18, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Earphone without covering an ear canal
    • Patent number 11,689,837
    • Issue date Jun 27, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output apparatus
    • Patent number 11,689,838
    • Issue date Jun 27, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output apparatus
    • Patent number 11,678,098
    • Issue date Jun 13, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output apparatus
    • Patent number 11,671,738
    • Issue date Jun 6, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Audio glasses
    • Patent number 11,671,737
    • Issue date Jun 6, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output apparatus
    • Patent number 11,653,134
    • Issue date May 16, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output apparatus and methods thereof
    • Patent number 11,622,186
    • Issue date Apr 4, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output device and buttons thereof
    • Patent number 11,595,745
    • Issue date Feb 28, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Acoustic output apparatus and methods thereof
    • Patent number 11,570,536
    • Issue date Jan 31, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei Zhang
    • G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

  • Information Patent Application

    EARPHONE WITHOUT COVERING AN EAR CANAL
    • Publication number 20250193570
    • Publication date Jun 12, 2025
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT APPARATUS
    • Publication number 20250039591
    • Publication date Jan 30, 2025
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT APPARATUS AND METHODS THEREOF
    • Publication number 20250030969
    • Publication date Jan 23, 2025
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT APPARATUS
    • Publication number 20250016487
    • Publication date Jan 9, 2025
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    OPEN EARPHONE
    • Publication number 20240422466
    • Publication date Dec 19, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT APPARATUS
    • Publication number 20240406611
    • Publication date Dec 5, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT DEVICE
    • Publication number 20240388831
    • Publication date Nov 21, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT DEVICE AND COMPONENTS THEREOF
    • Publication number 20240323579
    • Publication date Sep 26, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC DEVICE
    • Publication number 20240205582
    • Publication date Jun 20, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT DEVICE AND NOISE REDUCTION AND SOUND TRANSMISSION D...
    • Publication number 20240171892
    • Publication date May 23, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT APPARATUS
    • Publication number 20240073579
    • Publication date Feb 29, 2024
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT APPARATUS AND METHOD THEREOF
    • Publication number 20230396912
    • Publication date Dec 7, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    EARPHONE WITHOUT COVERING AN EAR CANAL
    • Publication number 20230336902
    • Publication date Oct 19, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT APPARATUS
    • Publication number 20230276160
    • Publication date Aug 31, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT APPARATUS
    • Publication number 20230276161
    • Publication date Aug 31, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT APPARATUS AND METHODS THEREOF
    • Publication number 20230232145
    • Publication date Jul 20, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    OPEN EARPHONE
    • Publication number 20230171528
    • Publication date Jun 1, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT DEVICE
    • Publication number 20230156390
    • Publication date May 18, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT DEVICE
    • Publication number 20230156391
    • Publication date May 18, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT DEVICE
    • Publication number 20230141946
    • Publication date May 11, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT DEVICE
    • Publication number 20230145038
    • Publication date May 11, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    ACOUSTIC DEVICE
    • Publication number 20230109699
    • Publication date Apr 13, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT APPARATUS AND METHOD THEREOF
    • Publication number 20230070507
    • Publication date Mar 9, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT DEVICE
    • Publication number 20230066263
    • Publication date Mar 2, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT DEVICE AND COMPONENTS THEREOF
    • Publication number 20230012124
    • Publication date Jan 12, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT APPARATUS
    • Publication number 20230007380
    • Publication date Jan 5, 2023
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT APPARATUS
    • Publication number 20220408172
    • Publication date Dec 22, 2022
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT APPARATUS
    • Publication number 20220386012
    • Publication date Dec 1, 2022
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    OPEN EARPHONE
    • Publication number 20220264212
    • Publication date Aug 18, 2022
    • SHENZHEN SHOKZ CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    ACOUSTIC OUTPUT APPARATUS
    • Publication number 20220030347
    • Publication date Jan 27, 2022
    • SHENZHEN VOXTECH CO., LTD.
    • Lei ZHANG
    • G06 - COMPUTING CALCULATING COUNTING