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USPTO Patent Rankings Data through Dec 31, 2025
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Donghai Sun — 3 Patents in 2020

KCKingfa Sci. & Tech. Co.: 3 patents #2 of 53Top 4%
Shanghai, CN: #300 of 3,648 inventorsTop 9%
Overall (2020): #92,323 of 565,922Top 20%
3 Patents 2020

Issued Patents 2020

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10800915 Polycarbonate composition and preparation method thereof Zhengyu Tian, Yin CEN, Wei Tong, Xiang-Qun Xie, Xianwen Liu 2020-10-13
10703901 Glass fiber-reinforced flame retardant PBT composition and preparation method thereof Rui Chen, Wen Zhu, Wei Chen, Feng Chen, Xuejun Fu +1 more 2020-07-07
10696841 Polycarbonate composition and preparation method thereof Xiuhao Xie, Yin CEN, Wei Tong, Junwei AI 2020-06-30