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USPTO Patent Rankings Data through Sept 30, 2025
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Tatsumi ICHIMURA — 3 Patents in 2021

Casio Computer Co.: 3 patents #19 of 176Top 15%
Overall (2021): #61,322 of 548,734Top 15%
3 Patents 2021

Issued Patents 2021

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
11199816 Electronic timepiece and method of assembling electronic timepiece Takashi Sano, Daisuke Uematsu, Yohei Kawaguchi, Takumi YASUDA 2021-12-14
11199817 Electronic timepiece Daisuke Uematsu, Takashi Sano, Yohei Kawaguchi, Takumi YASUDA 2021-12-14
11144015 Antenna device and timepiece Takashi Sano, Daisuke Uematsu, Yohei Kawaguchi, Takumi YASUDA 2021-10-12