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USPTO Patent Rankings Data through Dec 31, 2025
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Tsugio Endou — 2 Patents

DEDenon: 2 patents #2 of 21Top 10%
Hachioji, JP: #1,709 of 2,869 inventorsTop 60%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Tsugio Endou has been granted 2 US patents while listed as an inventor at Denon. All of these patents were granted in 2003. Tsugio Endou ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Tsugio Endou in Hachioji, JP.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6650600 Digital audio disc recorder Kazuhisa Machida, Atsushi Ishibashi, Tadahiko Sakamoto, Hideki Ikeda, Atsushi Oonishi 2003-11-18
6600700 Digital audio disc recorder Kazuhisa Machida, Atsushi Ishibashi, Tadahiko Sakamoto, Hideki Ikeda, Atsushi Oonishi 2003-07-29