TREA

Zhejiang Dunan Artificial Environment Co., Ltd.

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  • Hangzhou, Zhejiang, CN
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    One-way valve
    • Patent number 12,203,556
    • Issue date Jan 21, 2025
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Yunjun Xiong
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Electronic expansion valve
    • Patent number 12,146,694
    • Issue date Nov 19, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Yuchen He
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Flat tube and heat exchanger
    • Patent number 12,140,379
    • Issue date Nov 12, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Wenjian Wei
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Heat exchanger
    • Patent number 12,140,378
    • Issue date Nov 12, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Wenjian Wei
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Electronic expansion valve
    • Patent number 12,140,231
    • Issue date Nov 12, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Shaojun Zhan
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Heat exchanger
    • Patent number 12,130,100
    • Issue date Oct 29, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Wenjian Wei
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Gas-liquid separator and compression system
    • Patent number 12,117,217
    • Issue date Oct 15, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Hailong Jin
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Guide frame for four-way reversing valve
    • Patent number 12,104,708
    • Issue date Oct 1, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Fei Zhang
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Electronic expansion valve and assembling method of electronic expa...
    • Patent number 12,092,381
    • Issue date Sep 17, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Shaojun Zhan
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Coil component and electronic expansion valve with coil component
    • Patent number 12,015,307
    • Issue date Jun 18, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Bofeng Yuan
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electric water pump
    • Patent number 12,000,402
    • Issue date Jun 4, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Junjie Wang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Heat exchanger and air conditioner with heat exchanger
    • Patent number 11,959,705
    • Issue date Apr 16, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Wenjian Wei
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Electronic expansion valve and refrigeration system
    • Patent number 11,959,561
    • Issue date Apr 16, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Yuchen He
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Electronic expansion valve
    • Patent number 11,953,244
    • Issue date Apr 9, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Shaojun Zhan
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve body connection structure and valve assembly with valve body...
    • Patent number 11,946,558
    • Issue date Apr 2, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Zhiguo Song
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Nut assembly for electronic expansion valve, electronic expansion v...
    • Patent number 11,946,555
    • Issue date Apr 2, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Xinnan Wang
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pilot valve
    • Patent number 11,946,562
    • Issue date Apr 2, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Jianjun Chen
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Heat exchanger
    • Patent number 11,802,733
    • Issue date Oct 31, 2023
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Wenjian Wei
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Electronic expansion valve and air conditioning system with electro...
    • Patent number 11,796,234
    • Issue date Oct 24, 2023
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Yuchen He
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Electronic expansion valve
    • Patent number 11,644,118
    • Issue date May 9, 2023
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Shaojun Zhan
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Methods for fabricating pressure sensors with non-silicon diaphragms
    • Patent number 11,624,668
    • Issue date Apr 11, 2023
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Tom Kwa
    • B81 - MICRO-STRUCTURAL TECHNOLOGY
  • Information Patent Grant

    Heat exchanger flat tube and heat exchanger with heat exchanger fla...
    • Patent number 11,512,911
    • Issue date Nov 29, 2022
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Wenjian Wei
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Air conditioning system and electronic expansion valve thereof
    • Patent number 11,473,820
    • Issue date Oct 18, 2022
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Shaojun Zhan
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Micro valve device and valve body assembly
    • Patent number 9,897,233
    • Issue date Feb 20, 2018
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Shengchang Zhang
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Microvalve device and fluid flow control method
    • Patent number 9,689,508
    • Issue date Jun 27, 2017
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Ning Deng
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Electronic Expansion Valve
    • Publication number 20250035217
    • Publication date Jan 30, 2025
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Ju JIN
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Electronic Expansion Valve
    • Publication number 20250027567
    • Publication date Jan 23, 2025
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Ju JIN
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Stop Valve, Machining Method and Assembly Method
    • Publication number 20250020219
    • Publication date Jan 16, 2025
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Diyong CHEN
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    FIXING STRUCTURE AND INSERTION-PLATE-TYPE HEAT EXCHANGER HAVING SAME
    • Publication number 20250012522
    • Publication date Jan 9, 2025
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Guanjun WANG
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    Electronic Expansion Valve
    • Publication number 20250003499
    • Publication date Jan 2, 2025
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Zhijun KANG
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    HEAT EXCHANGER AND AIR CONDITIONING SYSTEM HAVING SAME
    • Publication number 20250003697
    • Publication date Jan 2, 2025
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Ronghui CAO
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    Valve Needle Component and Flow Regulating Valve
    • Publication number 20240418268
    • Publication date Dec 19, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Yuchen HE
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Reversing Valve and Heat Exchange System with Reversing Valve
    • Publication number 20240410478
    • Publication date Dec 12, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Wenrong ZHANG
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Valve Head Structure and Flow Regulating Valve with Valve Head Stru...
    • Publication number 20240410470
    • Publication date Dec 12, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Yuchen HE
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Electronic Expansion Valve
    • Publication number 20240410495
    • Publication date Dec 12, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Yuchen HE
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Electronic Expansion Valve
    • Publication number 20240401856
    • Publication date Dec 5, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Yuchen HE
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Connecting Pipe Assembly and Control Valve Assembly with Connecting...
    • Publication number 20240392909
    • Publication date Nov 28, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Jiafeng ZHU
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    BALL VALVE
    • Publication number 20240384802
    • Publication date Nov 21, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Zhouyang SHOU
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Combined Four-way Valve, Air Conditioning System and Vehicle
    • Publication number 20240384803
    • Publication date Nov 21, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Ju JIN
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Heat Exchanger
    • Publication number 20240384938
    • Publication date Nov 21, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Guanjun WANG
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    Electronic Expansion Valve
    • Publication number 20240384799
    • Publication date Nov 21, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Yuchen HE
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Reversing Valve
    • Publication number 20240376993
    • Publication date Nov 14, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Bin CAI
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    STOP VALVE AND REFRIGERATION SYSTEM HAVING SAME
    • Publication number 20240376992
    • Publication date Nov 14, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Diyong CHEN
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Anti-disassembly connector
    • Publication number 20240377003
    • Publication date Nov 14, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Zhongbo FENG
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Connecting Tube and Heat Exchanger
    • Publication number 20240369314
    • Publication date Nov 7, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Zhongbo FENG
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    Valve Needle and Electronic Expansion Valve Having Valve Needle
    • Publication number 20240369140
    • Publication date Nov 7, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Yuchen HE
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Gas-Liquid Separator and Compression System
    • Publication number 20240369273
    • Publication date Nov 7, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Hailong JIN
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    BOTTLE SOLENOID VALVE
    • Publication number 20240351755
    • Publication date Oct 24, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Zhou YU
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Anti-Disassembly Connector
    • Publication number 20240328546
    • Publication date Oct 3, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Zhongbo FENG
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    One-Way Valve and Valve Terminal
    • Publication number 20240318736
    • Publication date Sep 26, 2024
    • Zhejiang DUNAN Artificial Environment Co., Ltd.
    • Zhongbo FENG
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Electronic Water Pump
    • Publication number 20240318664
    • Publication date Sep 26, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Xiaowei ZHOU
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Pilot Valve and Four-way Reversing Valve
    • Publication number 20240318732
    • Publication date Sep 26, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Jianjun CHEN
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    EXPANSION VALVE COIL STRUCTURE AND PREPARING METHOD THEREOF, AND EX...
    • Publication number 20240309962
    • Publication date Sep 19, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Jiyou ZHANG
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Stator Assembly and Electronic Expansion Valve with Stator Assembly
    • Publication number 20240301964
    • Publication date Sep 12, 2024
    • Zhejiang DunAn Artificial Environment Co., Ltd
    • Zhongbo FENG
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    BIDIRECTIONAL THROTTLE VALVE, FIRST AIR CONDITIONING SYSTEM AND SEC...
    • Publication number 20240288205
    • Publication date Aug 29, 2024
    • ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
    • Yuanyang LIN
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...

Trademarklast 30 trademarks

  • Information Trademark

    79106140 - DUNAN
    • Serial number 79106140
    • Registration number 4266196
    • Filing date Nov 16, 2011
    • ZHEJIANG DUNAN ARTIFICIAL; ENVIRONMENTAL EQUIPMENT CO., LTD
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments