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Qinhui Zhang

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  • Guangdong, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Buccal tube with hidden traction hook
    • Patent number 12,171,636
    • Issue date Dec 24, 2024
    • GUANGZHOU OO MEDICAL SCIENTIFIC LIMITED
    • Qinhui Zhang
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Dental buccal tube
    • Patent number D1004101
    • Issue date Nov 7, 2023
    • GUANGZHOU OO MEDICAL SCIENTIFIC LIMITED
    • Qinhui Zhang
    • D24 - Medical and laboratory equipment
  • Information Patent Grant

    Dental buccal tube
    • Patent number D975853
    • Issue date Jan 17, 2023
    • GUANGZHOU OO MEDICAL SCIENTIFIC LIMITED
    • Qinhui Zhang
    • D24 - Medical and laboratory equipment
  • Information Patent Grant

    Dental buccal tube
    • Patent number D940877
    • Issue date Jan 11, 2022
    • GUANGZHOU OO MEDICAL SCIENTIFIC LIMITED
    • Qinhui Zhang
    • D24 - Medical and laboratory equipment

Patents Applicationslast 30 patents