Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
Home › Inventors › Zong-Shi Chang
ZC

Zong-Shi Chang

Overall (All Time): #1,669,158 of 4,157,543Top 45%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4974629 Gas pressure regulator for saving resetting operation — 1990-12-04
4974630 Gas pressure regulator having side-drafted throttling means — 1990-12-04
4817664 Gas pressure regulator — 1989-04-04

Nearby-Ranked Inventors

Ernest N. Litzenberger3
Kurt Pettersson3
Joseph H. Kyle3
Shiro Yamane3
Bjorn Nordenstrom3
Henry C. Kovar3
Michel Giroutru3
Chihiro Kosaka3
Per Olaf Weman3