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Shandong, China

Wanhua Chemical (ningbo) Co., Ltd.

USPTO Granted Patents = 17

Forward Citations = 2

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115 inventors (with patents filed for the assignee):

Weiqi Hua (8 out of 36 patents)

Yuan Li (6 out of 26 patents)

Xueshun Ji (4 out of 6 patents)

4. Jiakuan Sun (3 out of 5 patents)

5. Hongke Zhang (3 out of 14 patents)

6. Yonghua Shang (3 out of 10 patents)

7. Shuchang Sun (2 out of 3 patents)

8. Wuxi Luo (2 out of 2 patents)

9. Hao Chen (2 out of 6 patents)

10. Yi Zhao (1 out of 52 patents)

11. Jianfeng Chen (1 out of 34 patents)

12. Changsheng Chen (1 out of 5 patents)

13. Zaigang Yang (1 out of 3 patents)

14. Qiang Li (1 out of 8 patents)

15. Bin Shi (1 out of 21 patents)

17 patents: Sort by Forward Citations

1. 12383857 - Apparatus and method for rapid cooling of high temperature gas (2025-08-12),

2. 12378475 - Preparation method for emulsifier, emulsifier, aqueous epoxy resin dispersion and formulation method (2025-08-05),

3. 12304993 - Storage-stable polyisocyanate composition and preparation method (2025-05-20),

4. 12227610 - Aqueous dispersion comprising polyurethane or polyurethane-urea, preparation method therefor and use thereof (2025-02-18),

5. 12226761 - Catalyst for preparing phosgene and preparation method therefor, and method for preparation of phosgene and comprehensive utilization of energy thereof (2025-02-18),

6. 12122876 - Method for preparing reactive sealant resin (2024-10-22),

7. 12024582 - Preparation method for polyurethane optical resin and applications thereof (2024-07-02),

8. 11964032 - Aqueous polyurethane functional mask substrate and application thereof (2024-04-23),

9. 11814339 - Method for preparing isocyanate in gaseous phase (2023-11-14),

10. 11597796 - Ionic aqueous epoxy curing agent, preparation method therefor and use thereof (2023-03-07),

11. 10369559 - Composite catalyst, preparation process thereof, and process for catalyzing the trimerization of butadiene using the composite catalyst (2019-08-06),

12. 9802848 - Method for treating waste saline water produced in production process of diphenylmethane diisocyanate (MDI) (2017-10-31),

13. 9790314 - Viscoelastic sound-absorbing polyurethane foam and preparation method thereof (2017-10-17),

14. 9593089 - Process for preparing TDI isocyanurate (2017-03-14),

15. 9399582 - Catalyst for preparing phosgene and method for preparing phosgene using the same (2016-07-26),

Wanhua Chemical (Ningbo) Co., Ltd. is a subsidiary of Wanhua Chemical Group, specializing in the production of polyurethane raw materials. With advanced technology and innovative solutions, the company is a global leader in the chemical industry. Wanhua Chemical (Ningbo) Co., Ltd. is committed to sustainability and environmental protection, and strives to provide high-quality products and services to customers worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

17 Patents

#21 in Shandong

#1,506 in China

#34,828 in the World

Shandong, China

Wanhua Chemical (ningbo) Co., Ltd.

Forward Citations = 2

115 inventors:

Weiqi Hua (8 out of 36 patents)

Yuan Li (6 out of 26 patents)

Xueshun Ji (4 out of 6 patents)

4. Jiakuan Sun (3 out of 5 patents)

5. Hongke Zhang (3 out of 14 patents)

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