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

Keiichirou Kumagai

Nec: 4 patents #3,388 of 14,502Top 25%
Overall (All Time): #1,208,810 of 4,157,543Top 30%
4 Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8939284 Cushion of folding portable electronic device and waterproof structure of folding portable electronic device 2015-01-27
8634205 Case mounting structure, case, and case mounting method 2014-01-21
7195362 Light emitting device and electronic apparatus 2007-03-27
6075983 Portable communication device 2000-06-13