Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
TC

Teh-Chih Chen

Overall (All Time): #1,661,937 of 4,157,543Top 40%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5130502 Vacuum-controlled switch means responsive to engine load 1992-07-14
4971402 Vehicle brake system with locking preventive mechanism 1990-11-20
4699113 Air-rich fuel saver 1987-10-13