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

Ing-Nan Liu

Overall (All Time): #1,658,174 of 4,157,543Top 40%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5220700 Protective pillow 1993-06-22
5134820 Adjustable built-up stair 1992-08-04
5081714 Vehicle internal safety belt 1992-01-21