Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Haijun Yang

DCDelta Electronics (Shanghai) Co.: 2 patents #23 of 81Top 30%
PLPetrochina Company Limited: 1 patents #85 of 231Top 40%
Fujian, CA: #12 of 39 inventorsTop 35%
Overall (2021): #32,935 of 548,734Top 7%
5 Patents 2021

Issued Patents 2021

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
11193372 Oil and gas zone effectiveness evaluation method and apparatus Caineng Zou, Lianhua Hou, Jingli Yao, Tao Jiang, Jinghong Wang +1 more 2021-12-07
11189415 Magnetic element and switching power supply using the same Zengyi Lu, Shaohua Zhu 2021-11-30
D922065 Fishing box Kongjun Yang 2021-06-15
D922148 Cooler Kongjun Yang 2021-06-15
10971290 Magnetic assembly and power supply system with same Zengyi Lu, Yajiang Yan, Jun Sun 2021-04-06