For the Inventor, By the Inventor

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Hangzhou, China

Zhejiang Dunan Artificial Environment Co., Ltd.

USPTO Granted Patents = 42

EPO Patents = 10

Trademarks = 1

Forward Citations = 10

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78 inventors (with patents filed for the assignee):

Wenjian Wei (6 out of 16 patents)

Shaojun Zhan (6 out of 6 patents)

Guanjun Wang (6 out of 6 patents)

4. Zhongbo Feng (6 out of 6 patents)

5. Wenyong Ma (5 out of 6 patents)

6. Guigang Feng (4 out of 4 patents)

7. Yuchen He (4 out of 4 patents)

8. Wenrong Zhang (4 out of 6 patents)

9. Zhiguo Song (4 out of 6 patents)

10. Fugang Wang (4 out of 4 patents)

11. Qiubo He (3 out of 3 patents)

12. Yunjun Xiong (3 out of 3 patents)

13. Ju Jin (3 out of 3 patents)

14. Shengchang Zhang (2 out of 2 patents)

15. Yi Fan (2 out of 4 patents)

42 patents: Sort by Forward Citations

1. 12480582 - Electronic expansion valve (2025-11-25),

2. 12474098 - Liquid accumulator and refrigerating system having same (2025-11-18),

3. 12473990 - Valve device (2025-11-18),

4. 12467562 - Connecting pipe assembly and control valve assembly with connecting pipe assembly (2025-11-11),

5. 12449170 - Liquid accumulator and heat exchange system having liquid accumulator (2025-10-21),

6. 12429138 - Connection for valve seat and valve body unit (2025-09-30),

7. 12405063 - Heat exchanger and air conditioning device (2025-09-02),

8. 12404941 - Combined four-way valve, air conditioning system and vehicle (2025-09-02),

9. 12385569 - Reversible electromagnetic valve, and air conditioning unit having same (2025-08-12),

10. 12338910 - Electromagnetic valve and electromagnetic valve assembly (2025-06-24),

11. 12334257 - Expansion valve coil assembly (2025-06-17),

12. 12326302 - Heat exchanger and air conditioner (2025-06-10),

13. 12313349 - Micro-channel heat exchanger (2025-05-27),

14. 12305772 - Reversible electromagnetic valve and air conditioning unit having same (2025-05-20),

15. 12287150 - Combined heat exchanger (2025-04-29),

Zhejiang Dunan Artificial Environment Co., Ltd. is a leading manufacturer of artificial environment products in China. With a strong focus on research and development, the company provides innovative solutions for indoor climate control, including HVAC systems, air purification, and energy-efficient technologies. With a commitment to quality and sustainability, Dunan is dedicated to creating a healthier and more comfortable environment for its customers.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

42 Patents

#16 in Hangzhou

#673 in China

#15,845 in the World

Hangzhou, China

Zhejiang Dunan Artificial Environment Co., Ltd.

Forward Citations = 10

78 inventors:

Wenjian Wei (6 out of 16 patents)

Shaojun Zhan (6 out of 6 patents)

Guanjun Wang (6 out of 6 patents)

4. Zhongbo Feng (6 out of 6 patents)

5. Wenyong Ma (5 out of 6 patents)

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