Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Junichiro Nakajima — 1 Patent

EIEcho Incorporated: 1 patents #24 of 51Top 50%
Hitachi: 1 patents #17,777 of 28,497Top 65%
Atsugi, JP: #1,028 of 1,522 inventorsTop 70%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Junichiro Nakajima has been granted 1 US patent while listed as an inventor at Echo Incorporated. All of these patents were granted in 1993. Junichiro Nakajima ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Junichiro Nakajima in Atsugi, JP.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5274456 Semiconductor device and video camera unit using it and their manufacturing method Akiya Izumi, Iwao Takemoto, Hiroichi Sokei, Masahiko Kadowaki, Atsumu Iguchi +2 more 1993-12-28 $75,000