YI

Yuka Ishihara

FI Fujifilm Business Innovation: 24 patents #505 of 1,659Top 35%
Overall (All Time): #169,395 of 4,157,543Top 5%
24
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12416875 Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, and image forming apparatus Masashi Ikeda, Akira Matsumoto 2025-09-16
12164264 Toner for electrostatic charge image development, electrostatic charge image developer, and image forming apparatus Koji FUNABA 2024-12-10
11543758 Unit and image forming apparatus for fixing a toner image with a developer including a brilliant toner containing a flat brilliant pigment Yukiko KAMIJO, Hideaki Ohara, Kenji Omori, Junko YAMASAKI, Daisuke Nakashima +1 more 2023-01-03
10067437 Electrostatic charge image developer, process cartridge, and image forming apparatus Masashi Ikeda, Emi Takahashi, Manabu Furuki, Makoto Kamisaki, Teppei Yawada 2018-09-04
9891577 Image forming apparatus and image forming method using a toner carrier containing silicon derived from silica and silicone oil Masashi Ikeda, Emi Takahashi, Manabu Furuki, Makoto Kamisaki, Teppei Yawada 2018-02-13
8685602 Toner for electrophotography, developer for electrophotography, toner cartridge, image forming apparatus, and image forming method Emi Takahashi, Masahiro Okita 2014-04-01
8501380 Electrostatic latent image developing toner, electrostatic latent image developer, toner cartridge, process cartridge and image forming apparatus Masaki Nakamura, Satoshi Inoue, Katsumi Daimon 2013-08-06
7713669 Toner for developing electrostatic images, electrostatic image developer, and image-forming method Noriyuki Mizutani, Hideo Maehata, Hirokazu Hamano, Hiroyuki Tanaka, Moegi Iguchi +5 more 2010-05-11
7303846 Electrophotographic toner, process for producing the same, and process for forming image Atsuhiko Eguchi, Masahiro Okita, Jun Igarashi, Koichi Sugiyama, Susumu Yoshino +1 more 2007-12-04
7291436 Electrophotographic toner, method for producing the same, electrophotographic developer, and image forming method Masaki Nakamura, Takashi Imai, Katsumi Daimon, Hirokazu Yamada, Hirokazu Hamano +2 more 2007-11-06
6942951 Image forming method Katsumi Daimon, Takashi Imai, Manabu Serizawa, Hirokazu Hamano, Norihito Fukushima 2005-09-13
6895206 Image fixing apparatus and image fixing method for a crystalline resin-containing toner Masaki Nakamura, Toshimizu Ozawa, Norihito Fukushima, Hirokazu Hamano, Manabu Serizawa +1 more 2005-05-17
6895205 Image fixing apparatus with cooling unit and image fixing method Masaki Nakamura, Toshimizu Ozawa, Yoshinari Ueno, Norihito Fukushima, Hirokazu Hamano 2005-05-17
6864029 Electrophotographic toner, manufacture of the same, electrostatic latent image developer, and image forming method Hirokazu Hamano, Manabu Serizawa, Katsumi Daimon, Norihito Fukushima, Takashi Imai 2005-03-08
6607864 Image forming method Manabu Serizawa, Katsumi Daimon, Hirokazu Hamano, Norihito Fukushima, Takashi Imai 2003-08-19
6569592 Image forming method Katsumi Daimon, Manabu Serizawa, Hirokazu Hamano, Norihito Fukushima, Takashi Imai 2003-05-27
6242146 Carrier for electrostatic-charged image developer, developer and image forming process using the same, and carrier core material reproducing process Hiroshi Nakazawa, Akihiro Iizuka, Yoshifumi Iida, Kaori Oishi, Tomohito Nakajima +2 more 2001-06-05
6214512 Image forming method Hiroshi Takano, Takashi Imai, Masanori Ichimura 2001-04-10
6001527 Electrostatic charge image developer, image formation method and image forming device Masanori Ichimura, Takashi Imai, Hiroshi Takano, Hiroshi Nakazawa, Yoshifumi Iida +1 more 1999-12-14
5884129 Electrostatic-image developer and image forming process Masanori Ichimura, Michio Take, Hidekazu Yaguchi, Masaki Hashimoto, Takashi Imai +3 more 1999-03-16
5849451 Electrophotographic dry toner comprising inorganic particles Chiaki Suzuki, Tetsu Torigoe, Atuhiko Eguchi, Takayoshi Aoki 1998-12-15
5804351 Toner for electrostatic-image development, developer for electrostatic image, and image forming process using the same Hiroshi Takano, Masanori Ichimura, Masaki Hashimoto, Hideyuki Akagi, Kazuya Furuta +5 more 1998-09-08
5663021 Film for electrophotographic transfer, color toner, and method of color image formation Kiyoshi Hosoi, Tsukasa Matsuda, Masanori Ichimura, Takashi Sakai 1997-09-02
5340678 Dry tower for developing electrostatic image, process for producing same, and image formation method using same Chiaki Suzuki, Atuhiko Eguchi, Takayoshi Aoki, Seiichi Takagi, Toshiyuki Yano +1 more 1994-08-23