Assignee
ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD
CN·50 granted patents·83 pending applications·21 citations·filing 2012–2025
Top patents by PatentIndex Score
133 records- 0189US12044479B2Heat exchangerZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2020·Granted Jul 23, 2024·2 cites·14 claims
- 0288US11802733B2Heat exchangerZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2020·Granted Oct 31, 2023·2 cites·19 claims
- 0384US12429138B2Connection for valve seat and valve body unitZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2023·Granted Sep 30, 2025·1 cites·13 claims
- 0482US11959561B2Electronic expansion valve and refrigeration systemZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2020·Granted Apr 16, 2024·2 cites·32 claims
- 0582US11953244B2Electronic expansion valveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2020·Granted Apr 9, 2024·2 cites·18 claims
- 0679US11796234B2Electronic expansion valve and air conditioning system with electronic expansion valveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2019·Granted Oct 24, 2023·3 cites·20 claims
- 0777US12000402B2Electric water pumpZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2020·Granted Jun 4, 2024·1 cites·8 claims
- 0877US2024318732A1Pilot Valve and Four-way Reversing ValveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2024·Application pending·0 cites
- 0976US2024151312A1Pilot Valve and Four-way Reversing ValveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2024·Application pending·0 cites
- 1075US2026036209A1Valve Assembly and Electronic Expansion ValveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2025·Application pending·0 cites
- 1174US2026071795A1Pilot valve and switching valveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2025·Application pending·0 cites
- 1273US11644118B2Electronic expansion valveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2019·Granted May 9, 2023·3 cites·11 claims
- 1370US11473820B2Air conditioning system and electronic expansion valve thereofZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2019·Granted Oct 18, 2022·2 cites·11 claims
- 1469US2024151310A1Electric ValveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2022·Application pending·0 cites
- 1568US2025164164A1Electronic Expansion ValveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2022·Application pending·0 cites
- 1668US2026098687A1Heat exchanger and heat exchange systemZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2025·Application pending·0 cites
- 1768US2025035217A1Electronic Expansion ValveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2022·Application pending·0 cites
- 1868US2025341367A1Heat exchangerZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2025·Application pending·0 cites
- 1968US2025027567A1Electronic Expansion ValveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2022·Application pending·0 cites
- 2067US12287150B2Combined heat exchangerZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2023·Granted Apr 29, 2025·0 cites·9 claims
- 2165US2025109916A1Liquid distributor and heat exchangerZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2024·Application pending·0 cites
- 2264US2025246360A1Terminal and Electromagnetic CoilZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2023·Application pending·0 cites
- 2363US9897233B2Micro valve device and valve body assemblyZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2012·Granted Feb 20, 2018·3 cites·20 claims
- 2463US2022252164A1Pilot Valve and Four-way Reversing ValveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2020·Application pending·0 cites
- 2563US2025012522A1Fixing structure and insertion-plate-type heat exchanger having sameZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2024·Application pending·0 cites
- 2662US12510163B2Electromagnetic valve and air conditioning system having sameZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2024·Granted Dec 30, 2025·0 cites·9 claims
- 2762US12474098B2Liquid accumulator and refrigerating system having sameZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2023·Granted Nov 18, 2025·0 cites·10 claims
- 2862US12203556B2One-way valveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2023·Granted Jan 21, 2025·0 cites·19 claims
- 2962US2024210122A1Heat exchangerZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2024·Application pending·0 cites
- 3061US12546518B2Gas-liquid separator and air conditioning deviceZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2023·Granted Feb 10, 2026·0 cites·16 claims
- 3161US12338910B2Electromagnetic valve and electromagnetic valve assemblyZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2023·Granted Jun 24, 2025·0 cites·20 claims
- 3261US11624668B2Methods for fabricating pressure sensors with non-silicon diaphragmsZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2019·Granted Apr 11, 2023·0 cites·20 claims
- 3360US12449170B2Liquid accumulator and heat exchange system having liquid accumulatorZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2022·Granted Oct 21, 2025·0 cites·12 claims
- 3459US12222142B2Air conditioner and reservoir thereofZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2022·Granted Feb 11, 2025·0 cites·16 claims
- 3559US11959705B2Heat exchanger and air conditioner with heat exchangerZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2019·Granted Apr 16, 2024·0 cites·20 claims
- 3658US11512911B2Heat exchanger flat tube and heat exchanger with heat exchanger flat tubeZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2019·Granted Nov 29, 2022·0 cites·17 claims
- 3758US2024255240A1Refrigerant distribution device and heat exchangerZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2024·Application pending·0 cites
- 3858US2025224184A1Fin structure and heat exchanger having sameZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2025·Application pending·0 cites
- 3958US2024309962A1Expansion valve coil structure and preparing method thereof, and expansion valveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2024·Application pending·0 cites
- 4056US12473990B2Valve deviceZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2023·Granted Nov 18, 2025·0 cites·11 claims
- 4155US12404941B2Combined four-way valve, air conditioning system and vehicleZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2022·Granted Sep 2, 2025·0 cites·20 claims
- 4255US12140379B2Flat tube and heat exchangerZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2019·Granted Nov 12, 2024·0 cites·12 claims
- 4355US2025290711A1Heat exchangerZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2023·Application pending·0 cites
- 4455US2024384938A1Heat ExchangerZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2022·Application pending·0 cites
- 4555US2025052520A1Microchannel heat exchanger group and air conditioning system having sameZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2024·Application pending·0 cites
- 4654US12498047B2Driver and control valveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2023·Granted Dec 16, 2025·0 cites·19 claims
- 4754US12467562B2Connecting pipe assembly and control valve assembly with connecting pipe assemblyZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2022·Granted Nov 11, 2025·0 cites·10 claims
- 4854US12385569B2Reversible electromagnetic valve, and air conditioning unit having sameZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2023·Granted Aug 12, 2025·0 cites·18 claims
- 4954US11946562B2Pilot valveZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2020·Granted Apr 2, 2024·0 cites·8 claims
- 5054US2024369140A1Valve Needle and Electronic Expansion Valve Having Valve NeedleZHEJIANG DUNAN ARTIFICIAL ENV CO LTD·Filed 2022·Application pending·0 cites
Showing the top 50 of 133 patent records by PatentIndex Score.
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