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

Kwei-Chi Tsay — 2 Patents

UNUnknown: 3 patents #7,366 of 83,584Top 9%
Taoyuan, TW: #2,466 of 5,438 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Kwei-Chi Tsay has been granted 2 US patents while listed as an inventor at Unknown. The first was granted in 2005 and the most recent in July 2019. Kwei-Chi Tsay ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Kwei-Chi Tsay in Taoyuan, TW.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10361047 Pressure switch with corrugated sheets Che-Pin Chen, Zong-Ham Wu 2019-07-23
6886416 Pedal force sensing apparatus for an electric bicycle Cheng-Chung Houng 2005-05-03