Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Hiroi Nambu — 2 Patents

HAHitachi Astemo: 1 patents #649 of 1,276Top 55%
Hitachi: 1 patents #17,777 of 28,497Top 65%
Yokohama, JP: #26,468 of 49,234 inventorsTop 55%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Hiroi Nambu has been granted 2 US patents while listed as an inventor at Hitachi. The first was granted in 2013 and the most recent in December 2024. Hiroi Nambu ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Hiroi Nambu in Yokohama, JP.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12177992 Electronic control device with electromagnetic compatibility for vehicle control Toshiyuki Fujimasa, Eiji Ichikawa, Masao Horie, Masashi Saito, Tomokazu Tanase 2024-12-24
8600321 Radio transmitter and envelope tracking power supply control method Masami Ohnishi 2013-12-03