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

Da Ha — 6 Patents

LG: 2 patents #13,393 of 26,165Top 55%
UNUnknown: 2 patents #12,644 of 83,584Top 20%
TTTaiyuan University Of Technology: 1 patents #156 of 480Top 35%
Taiyuan, CN: #35 of 378 inventorsTop 10%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Da Ha has been granted 6 US patents while listed as an inventor at Unknown. The first was granted in 2000 and the most recent in July 2025. Da Ha ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Da Ha in Taiyuan, CN.

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12370592 Convexity adjusting mechanism for working roll of straightening machine Yizhong Cao, Hao Yuan, Weirong Zhang, Nan Yang 2025-07-29
12239297 Video laryngoscope with guided decontamination device Hushan Ao, Yi Qiu, Xizhe Zhang, Yi-Feng Sun, Yuhua Gong +3 more 2025-03-04
12089381 Display device 2024-09-10 $10,000
11540430 Display device 2022-12-27 $11,000
10517474 Ventilatory laryngoscope with disposable laryngoscope lens Ni Shu, Rina Wu 2019-12-31
6106458 Anesthetic laryngoscope with manual controlled oxygen ejection means 2000-08-22