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USPTO Patent Rankings Data through Dec 31, 2025
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Hitoshi Ryuzaki — 2 Patents

UNUnknown: 2 patents #12,644 of 83,584Top 20%
Chiba, JP: #2,952 of 6,266 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Hitoshi Ryuzaki has been granted 2 US patents while listed as an inventor at Unknown. All of these patents were granted in 2014. Hitoshi Ryuzaki ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Hitoshi Ryuzaki in Chiba, JP.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D719197 Agitating rotor Kazuo Tsuchiya 2014-12-09
D719198 Agitating rotor Kazuo Tsuchiya 2014-12-09