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USPTO Patent Rankings Data through Sept 30, 2025
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Daisuke Ohtani — 2 Patents

Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%
Overall (All Time): #2,284,132 of 4,157,543Top 55%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5384207 Electronic apparatus with battery power source 1995-01-24
5068917 Portable radio transceiver Shouji Sugiyama, Tadao Tajima 1991-11-26