Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
QC

Qi'an CHEN — 2 Patents

UNUnknown: 2 patents #12,644 of 83,584Top 20%
Zhoupu, CN: #4 of 23 inventorsTop 20%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Qi'an CHEN has been granted 2 US patents while listed as an inventor at Unknown. The first was granted in 2021 and the most recent in August 2022. Qi'an CHEN ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Qi'an CHEN in Zhoupu, CN.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11408363 Control method, device and storage medium for engine operation Beiwu JIN 2022-08-09
11193451 Gas idling transition passage structure for oil and gas dual-purpose carburetor Xingyao Zhang 2021-12-07