YY

Yoshiki Yamaguchi

Ricoh Company: 115 patents #24 of 9,818Top 1%
Mitsubishi Electric: 4 patents #7,099 of 25,717Top 30%
HI Hitachi: 3 patents #10,712 of 28,497Top 40%
MM Mitsubishi Mining: 2 patents #467 of 2,247Top 25%
IBM: 1 patents #44,794 of 70,183Top 65%
HC Hirose Electric Co.: 1 patents #259 of 407Top 65%
TT The University Of Tokyo: 1 patents #1,000 of 2,633Top 40%
GL Glory: 1 patents #217 of 385Top 60%
Overall (All Time): #8,739 of 4,157,543Top 1%
127
Patents All Time

Issued Patents All Time

Showing 1–25 of 127 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
11940749 Fixing device and image forming apparatus incorporating same with a reflector that does not contact a stay 2024-03-26
11852994 Fixing device and image forming apparatus incorporating same Ippei Fujimoto 2023-12-26
11803143 Nip formation pad, heating device, fixing device, and image forming apparatus Ippei Fujimoto, Takashi Seto, Hiroshi Yoshinaga, Kentaro Yamashita 2023-10-31
11681250 Nip former, fixing device, and image forming apparatus Toshiyuki Kabata, Takashi Seto, Hiroshi Yoshinaga, Kentaro Yamashita, Daisuke Inoue 2023-06-20
11099509 Fixing device and image forming apparatus Ippei Fujimoto, Takashi Seto, Hiroshi Yoshinaga 2021-08-24
11054774 Nip forming member, fixing device, and image forming apparatus Yoshiharu Takahashi, Naoki Iwaya, Hitoshi Fujiwara, Ippei Fujimoto 2021-07-06
10962908 Heating device, fixing device, and image forming apparatus Ippei Fujimoto 2021-03-30
10942475 Fixing device and image forming apparatus including nip former of specific surface roughness Ippei Fujimoto, Takashi Seto, Hiroyuki Shimada 2021-03-09
10845740 Temperature detector, heating device, fixing device, and image forming apparatus Yuusuke Furuichi, Hiroshi Seo 2020-11-24
10782637 Fixing device and image forming apparatus incorporating same Ippei Fujimoto 2020-09-22
10691049 Fixing device and image forming apparatus Ippei Fujimoto, Hiroyuki Shimada, Takashi Seto, Takayuki Seki 2020-06-23
10571837 Fixing device and image forming apparatus Ippei Fujimoto, Hiroyuki Shimada, Takayuki Seki, Takashi Seto, Yoshiyuki Fukuda +1 more 2020-02-25
10176659 Paper sheet authentication apparatus Takeshi Sato 2019-01-08
10001735 Fixing device and image forming apparatus Takahiro Imada, Masaaki Yoshikawa, Kenji Ishii, Hiroshi Yoshinaga, Yuji Arai +9 more 2018-06-19
9983526 Fixing device and image forming apparatus including same Takeshi Uchitani, Masahiko Satoh, Kenji Ishii, Tadashi Ogawa, Teppei Kawata +19 more 2018-05-29
9811029 Fixing device and image forming apparatus including the same Haruyuki Honda, Ryuuichi Mimbu, Yoshio Hattori, Toshihiko Shimokawa 2017-11-07
9811043 Image forming apparatus Ryuuichi Mimbu, Yoshio Hattori, Haruyuki Honda, Toshihiko Shimokawa 2017-11-07
9753417 Fixing device including outlet guide member and image forming apparatus thereof Yoshio Hattori, Haruyuki Honda, Ryuuichi Mimbu, Toshihiko Shimokawa, Yutaka Ikebuchi +4 more 2017-09-05
9715203 Fixing device and image forming apparatus including same Takeshi Uchitani, Masahiko Satoh, Kenji Ishii, Tadashi Ogawa, Teppei Kawata +19 more 2017-07-25
9696668 Fixing device and image forming apparatus Yoshio Hattori, Ryuuichi Mimbu, Haruyuki Honda, Toshihiko Shimokawa 2017-07-04
9599941 Heater for heating a fixing rotator of a fixing device and image forming apparatus incorporating the same Kazuhito Kishi, Yasunori Ishigaya, Ippei Fujimoto, Keisuke Kawabata, Haruyuki Honda 2017-03-21