Partial year: Data through Q3 2025 (Sept 30). Full-year totals not yet available.
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Yoshiki Yamaguchi

Ricoh Company: 3 patents #48 of 689Top 7%
HC Hirose Electric Co.: 1 patents #7 of 17Top 45%
Overall (2025): #26,774 of 469,880Top 6%
4
Patents 2025

Issued Patents 2025

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
12431653 Branch adaptor 2025-09-30
12422766 Fixing device and image forming apparatus incorporating same Hiroshi Yoshinaga, Takashi Seto, Ryohhei Sugiyama, Ryohei Matsuda 2025-09-23
12353150 Fixing device and image forming apparatus Hiroshi Yoshinaga, Takashi Seto, Ryohei Matsuda, Ryohhei Sugiyama 2025-07-08
12197150 Fixing device and image forming apparatus incorporating the same Ryohei Matsuda, Takashi Seto, Hiroshi Yoshinaga, Ryohhei Sugiyama 2025-01-14