TREA

Yordan Konstantinov Kralev

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  • Sofia, BG
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Patents Grantslast 30 patents

  • Information Patent Grant

    Filter life prediction method and filter type detection method
    • Patent number 11,660,559
    • Issue date May 30, 2023
    • Vitality Ventures HK Company Limited
    • Grant Prigge
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Air purifier
    • Patent number 11,633,687
    • Issue date Apr 25, 2023
    • Vitality Ventures HK Company Limited
    • Grant Prigge
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

  • Information Patent Application

    AIR PURIFIER WITH NOISE MITIGATION FEATURE
    • Publication number 20230324072
    • Publication date Oct 12, 2023
    • Vitality Ventures HK Company Limited
    • Grant Prigge
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    AIR PURIFIER WITH SELECTIVE CLEANING FEATURE
    • Publication number 20230175725
    • Publication date Jun 8, 2023
    • Vitality Ventures HK Company Limited
    • Grant Prigge
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    AIR PURIFIER
    • Publication number 20210379524
    • Publication date Dec 9, 2021
    • Vitality Ventures HK Company Limited
    • Grant Prigge
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    FILTER LIFE PREDICTION METHOD AND FILTER TYPE DETECTION METHOD
    • Publication number 20210379520
    • Publication date Dec 9, 2021
    • Vitality Ventures HK Company Limited
    • Grant Prigge
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL