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

Shiki Koizumi

Sony: 9 patents #4,874 of 25,231Top 20%
Overall (All Time): #583,833 of 4,157,543Top 15%
9 Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
D571355 Speaker box 2008-06-17
D552124 Audio player 2007-10-02
D550703 Audio player 2007-09-11
D546838 Audio player 2007-07-17
D533868 Earphone 2006-12-19
D533867 Earphone 2006-12-19
D532366 Combined charger and transmitter for headphone 2006-11-21
D525235 Headphone 2006-07-18
D524798 Speaker 2006-07-11