YN

Yukiko Nakajima

Ricoh Company: 27 patents #743 of 9,818Top 8%
Overall (All Time): #146,754 of 4,157,543Top 4%
27
Patents All Time

Issued Patents All Time

Showing 1–25 of 27 patents

Patent #TitleCo-InventorsDate
9720339 Toner, developer using the toner, image forming apparatus Shingo Sakashita, Shinya Nakayama, Masahide Yamada, Atsushi Yamamoto, Hideyuki Santo +1 more 2017-08-01
9519235 Toner, developer using the toner, image forming apparatus Shingo Sakashita, Shinya Nakayama, Masahide Yamada, Atsushi Yamamoto, Hideyuki Santo +1 more 2016-12-13
9310735 Fixing device and image forming apparatus having temperature detector Yoshiki Yamaguchi, Kazuhito Kishi, Masahiro Samei, Ippei Fujimoto, Misaki Shimizu +1 more 2016-04-12
9223268 Fixing device, belt device, and image forming apparatus Yoshiki Yamaguchi, Kazuhito Kishi, Masahiro Samei, Ippei Fujimoto, Misaki Shimizu +3 more 2015-12-29
9141013 Electrophotographic toner, developer containing the toner, and image forming apparatus Yoshihiro Moriya, Masahide Yamada, Taichi Nemoto, Yoshitaka Yamauchi, Keiji Makabe +3 more 2015-09-22
9134638 Toner, developer using the toner, image forming apparatus Shingo Sakashita, Shinya Nakayama, Masahide Yamada, Atsushi Yamamoto, Hideyuki Santo +1 more 2015-09-15
9127118 Resin for toner, toner using the resin, and development agent using the toner Hideyuki Santo, Shinya Nakayama, Atsushi Yamamoto, Yoshihiro Moriya, Akiyoshi Sabu +6 more 2015-09-08
9128397 Resin for use in toner, toner using the resin, developer using the toner, image forming apparatus and method using the toner, and method of manufacturing resin Masahide Yamada, Taichi Nemoto, Yoshihiro Moriya, Yoshitaka Yamauchi, Keiji Makabe +2 more 2015-09-08
9012116 Toner and developer Daiki Yamashita, Yoshihiro Moriya, Taichi Nemoto, Yoshitaka Yamauchi, Keiji Makabe +2 more 2015-04-21
9005859 Colorless transparent toner, toner set, development agent, image forming apparatus, and printed matter Akiyoshi Sabu, Shinya Nakayama, Atsushi Yamamoto, Hideyuki Santo 2015-04-14
8951705 Development agent and image forming apparatus employing same Shinya Nakayama, Atsushi Yamamoto, Masahide Yamada, Hideyuki Santo, Suzuka Amemori 2015-02-10
8951707 Toner, developer and image forming apparatus Suzuka Amemori, Atsushi Yamamoto, Masahide Yamada, Shinya Nakayama, Hideyuki Santo 2015-02-10
8932790 Toner, developer including the toner, image forming apparatus using the toner, and block copolymer Yoshitaka Yamauchi, Masahide Yamada, Yoshihiro Moriya, Taichi Nemoto, Keiji Makabe +3 more 2015-01-13
8883385 Toner, development agent, and image forming apparatus using the same Shingo Sakashita, Hiroshi Yamashita, Masahide Yamada, Shinya Nakayama, Atsushi Yamamoto 2014-11-11
8877415 Toner, method of manufacturing toner, developer, toner container, image forming method, and process cartridge Daiki Yamashita, Shinya Nakayama, Atsushi Yamamoto, Akiyoshi Sabu, Yoshihiro Moriya +1 more 2014-11-04
8865384 Electrophotographic toner, developer, and image forming apparatus Masahide Yamada, Shinya Nakayama, Atsushi Yamamoto, Hideyuki Santo, Shingo Sakashita +2 more 2014-10-21
8859179 Developer for electrophotography, image forming apparatus and process cartridge Hideyuki Santo, Masahide Yamada, Kazumi Suzuki, Shinya Nakayama, Atsushi Yamamoto +4 more 2014-10-14
8828635 Toner, developer, process cartridge, and image forming apparatus Yoshihiro Moriya, Shinya Nakayama, Atsushi Yamamoto, Hideyuki Santo, Akiyoshi Sabu +1 more 2014-09-09
8735040 Toner, developer, and image forming apparatus Suzuka Amemori, Masahide Yamada, Yoshihiro Moriya, Taichi Nemoto, Yoshitaka Yamauchi +3 more 2014-05-27
8691486 Electrostatic image developing toner, developer, image forming apparatus, image forming method, and process cartridge Ryota Inoue, Akihiro Kotsugai, Akiyoshi Sabu, Shingo Sakashita, Keiko Osaka 2014-04-08
8685604 Toner, developer, and image forming apparatus Yoshihiro Moriya, Masahide Yamada, Taichi Nemoto, Yoshitaka Yamauchi, Daiki Yamashita +3 more 2014-04-01
8679714 Toner, developer, and image forming method Ryota Inoue, Akihiro Kotsugai, Yoshihiro Moriya, Akiyoshi Sabu, Shingo Sakashita +3 more 2014-03-25
8663888 Toner Yasutada Shitara, Yohichiroh Watanabe, Yasuo Katano, Shinya Nakayama, Ryota Inoue +3 more 2014-03-04
8658340 Toner, development agent, and image forming method Shingo Sakashita, Shinya Nakayama, Ryota Inoue, Yoshihiro Moriya, Akiyoshi Sabu +1 more 2014-02-25
8632932 Toner, color toner set, developer, process cartridge, and image forming method Akiyoshi Sabu, Akihiro Kotsugai, Ryota Inoue, Keiko Osaka, Shingo Sakashita +1 more 2014-01-21