Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Katsuhisa Kamakura — 2 Patents

RURubycon: 2 patents #12 of 31Top 40%
Ina, JP: #72 of 154 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Katsuhisa Kamakura has been granted 2 US patents while listed as an inventor at Rubycon. All of these patents were granted in 2005. Katsuhisa Kamakura ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Katsuhisa Kamakura in Ina, JP.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6919240 Flat aluminum electrolytic capacitor and method of manufacturing the same Shigeru Uzawa, Yoshiki Makino, Yuuichi Kobayashi, Akihiko Komatsu, Taketo Matsuzawa 2005-07-19
6882519 Flat aluminum electrolytic capacitor and method of manufacturing the same Shigeru Uzawa, Yoshiki Makino, Yuuichi Kobayashi, Akihiko Komatsu, Taketo Matsuzawa 2005-04-19