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USPTO Patent Rankings Data through Sept 30, 2025
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Yukihisa Narazaki

Ricoh Company: 1 patents #6,936 of 9,818Top 75%
Overall (All Time): #3,859,452 of 4,157,543Top 95%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5148212 Flash control based on calculated required flash energy Yoshio Serikawa, Susumu Iguchi, Akira Ueno, Hiroshi Takeda, Shigeru Mitsu +2 more 1992-09-15