YI

Yoshimichi Ishikawa

Ricoh Company: 37 patents #422 of 9,818Top 5%
📍 Kasai, JP: #145 of 5,842 inventorsTop 3%
Overall (All Time): #90,058 of 4,157,543Top 3%
37
Patents All Time

Issued Patents All Time

Showing 1–25 of 37 patents

Patent #TitleCo-InventorsDate
11106150 Carrier, developer, method, and apparatus for forming electrophotographic image, and process cartridge Masashi Nagayama, Hiroyuki Kishida, Masahiro Seki, Saori Yamada 2021-08-31
9971260 Toner, developing device, and process cartridge Tsuyoshi Nozaki, Tomoharu Miki, Yuta Takeuchi 2018-05-15
9709912 Toner, and image forming method, process cartridge, and image forming apparatus using the toner Kazuoki Fuwa, Takuya Kadota, Yoshihiro Mikuriya, Tsuyoshi Nozaki, Yuta Takeuchi +3 more 2017-07-18
9563140 Toner Tsuyoshi Nozaki, Takuya Kadota, Yoshihiro Mikuriya, Kazuoki Fuwa, Tomohiro Fukao +1 more 2017-02-07
9417541 Toner and image forming apparatus Takuya Kadota, Yoshihiro Mikuriya, Tsuyoshi Nozaki, Kazuoki Fuwa, Tomohiro Fukao +1 more 2016-08-16
9360824 Image forming apparatus and process cartridge Tomohiro Fukao, Tsuyoshi Nozaki, Yoshihiro Mikuriya, Atsushi Yamamoto, Kazuoki Fuwa +4 more 2016-06-07
9285695 Latent electrostatic image developing toner Tomoharu Miki, Takuya Kadota, Yoshihiro Mikuriya, Tsuyoshi Nozaki, Kazuoki Fuwa +1 more 2016-03-15
9268244 Electrostatic image developing toner, image forming apparatus, image forming method, and process cartridge Tomohiro Fukao, Takuya Kadota, Yoshihiro Mikuriya, Tsuyoshi Nozaki, Kazuoki Fuwa +1 more 2016-02-23
9182688 Image forming apparatus, image forming method and process cartridge Takuya Kadota, Yoshihiro Mikuriya, Tsuyoshi Nozaki, Kazuoki Fuwa, Tomohiro Fukao +5 more 2015-11-10
9098013 Developing roller, developing device, process cartridge, and image forming apparatus Hideaki Yasunaga, Keiichiro Juri, Yuta Takeuchi, Tsuyoshi Nozaki, Tomoharu Miki 2015-08-04
8871417 Toner, image forming apparatus, and process cartridge Tomoharu Miki, Takuya Kadota, Yoshihiro Mikuriya, Tsuyoshi Nozaki, Atsushi Yamamoto +1 more 2014-10-28
8691484 Toner and method for producing the same, toner container, developer, image forming apparatus and process cartridge Tsuyoshi Nozaki, Chiyoshi Nozaki, Atsushi Yamamoto, Mitsuyo Matsumoto, Takuya Kadota +1 more 2014-04-08
8647803 Method for producing colored resin particles, colored resin particles, developer, image forming apparatus, image forming method, and process cartridge Atsushi Yamamoto, Takuya Kadota, Yoshihiro Mikuriya, Tsuyoshi Nozaki, Kazuoki Fuwa +2 more 2014-02-11
8642238 Toner, developer and method for producing toner Tsuyoshi Nozaki, Tomoharu Miki, Tomohiro Fukao, Kazuoki Fuwa, Yoshihiro Mikuriya +1 more 2014-02-04
8623581 Electrostatic image developing toner, developer, and image forming apparatus Tomohiro Fukao, Takuya Kadota, Yoshihiro Mikuriya, Tsuyoshi Nozaki, Kazuoki Fuwa +1 more 2014-01-07
8614040 Electrostatic image developing toner, toner container and process cartridge Tomohiro Fukao, Takuya Kadota, Yoshihiro Mikuriya, Tsuyoshi Nozaki, Kazuoki Fuwa +1 more 2013-12-24
8518625 Toner, image forming apparatus, image forming method and process cartridge Tomohiro Fukao, Takuya Kadota, Chieko Yamazaki, Yoshihiro Mikuriya, Tsuyoshi Nozaki +3 more 2013-08-27
8440380 Toner and method for producing the same Atsushi Yamamoto, Takuya Kadota, Yoshihiro Mikuriya, Tsuyoshi Nozaki, Kazuoki Fuwa +3 more 2013-05-14
8435709 Toner for developing latent electrostatic image, process cartridge and image forming method Atsushi Yamamoto, Chiyoshi Nozaki, Tsuyoshi Nozaki, Takuya Kadota, Hiroyuki Murakami +2 more 2013-05-07
8431314 Colored resin particle and method for producing the same Yoshihiro Mikuriya, Tomoharu Miki, Tomohiro Fukao, Kazuoki Fuwa, Takuya Kadota +2 more 2013-04-30
8354164 Semiconductive member, and developing roll, charging roll, transfer belt, and image forming apparatus using same Chiyoshi Nozaki, Tetsumaru Fujita, Shintaro Yamada, Yuji Nagatomo, Shin Murayama +1 more 2013-01-15
8309290 Toner and method of manufacturing the same Atsushi Yamamoto, Chiyoshi Nozaki, Tsuyoshi Nozaki, Mitsuyo Matsumoto, Takuya Kadota +2 more 2012-11-13
8268527 Toner, developer, developing device, process cartridge, image forming apparatus, image forming method, and method of manufacturing toner Takuya Kadota, Yoshihiro Mikuriya, Tsuyoshi Nozaki, Atsushi Yamamoto, Tomohiro Fukao +1 more 2012-09-18
8216755 Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method Chiyoshi Nozaki, Tsuyoshi Nozaki, Takuya Kadota, Katsunori Kurose, Mitsuyo Matsumoto +1 more 2012-07-10
8139984 Image forming method and apparatus Hiroyuki Murakami, Masahide Inoue, Chiyoshi Nozaki, Tsuyoshi Nozaki, Atsushi Yamamoto +3 more 2012-03-20