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

Hiroshi Yoshinaga

Ricoh Company: 6 patents #9 of 689Top 2%
Overall (2025): #16,973 of 469,880Top 4%
6
Patents 2025

Issued Patents 2025

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
12422766 Fixing device and image forming apparatus incorporating same Takashi Seto, Ryohhei Sugiyama, Ryohei Matsuda, Yoshiki Yamaguchi 2025-09-23
12393141 Fixing device and image forming apparatus Kota Shiodera, Takayuki Andoh, Masahiro Samei, Toshiyuki Kabata 2025-08-19
12353150 Fixing device and image forming apparatus Yoshiki Yamaguchi, Takashi Seto, Ryohei Matsuda, Ryohhei Sugiyama 2025-07-08
12197150 Fixing device and image forming apparatus incorporating the same Ryohei Matsuda, Yoshiki Yamaguchi, Takashi Seto, Ryohhei Sugiyama 2025-01-14
12197151 Heating device, fixing device, and image forming apparatus Masahiro Samei, Takayuki Andoh, Kota Shiodera, Toshiyuki Kabata 2025-01-14
12197155 Heating device, fixing device, and image forming apparatus with heat shield including first portion and second portion Takayuki Andoh, Masahiro Samei, Kota Shiodera, Toshiyuki Kabata, Ryohhei Sugiyama 2025-01-14