KN

Kiyofumi Nagai

Ricoh Company: 82 patents #57 of 9,818Top 1%
HC Hokuetsu Kishu Paper Co.: 1 patents #3 of 15Top 20%
NC Nippon Paper Industries Co.: 1 patents #263 of 535Top 50%
TF Tokyo University Of Science Foundation: 1 patents #82 of 252Top 35%
Overall (All Time): #21,735 of 4,157,543Top 1%
82
Patents All Time

Issued Patents All Time

Showing 26–50 of 82 patents

Patent #TitleCo-InventorsDate
8328343 Recording ink as well as ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording method Tamotsu Aruga, Masayuki Koyano, Akihiko Matsuyama, Hisashi Habashi, Hiroshi Goto +2 more 2012-12-11
8322839 Inkjet recording method, inkjet recording medium, and aqueous ink Tohru Ohshima 2012-12-04
8304043 Inkjet recording ink and recording media set, inkjet recording method, recorded matter and recording apparatus Hidefumi Nagashima, Michihiko Namba, Mariko Kojima 2012-11-06
8303099 Recording ink, ink cartridge, ink record, inkjet recording apparatus, and inkjet recording method Mariko Kojima, Tomohiro Inoue, Akihiko Gotoh, Michihiko Namba, Hisashi Habashi +1 more 2012-11-06
8252207 Ink for inkjet recording, ink set for inkjet recording, ink media set for inkjet recording, ink cartridge, inkjet recording method, and inkjet recording apparatus Michihiko Namba, Akihiko Matsuyama, Naoya Morohoshi, Tohru Ohshima, Masayuki Koyano +1 more 2012-08-28
8242201 Pigment dispersion, recording ink, ink cartridge, ink-jet recording method and ink-jet recording apparatus Hiroshi Goto, Akihiko Matsuyama 2012-08-14
8201935 Image recording method Tohru Ohshima 2012-06-19
8173227 Recording ink, ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus, and inkjet recording method Naoya Morohoshi, Tamotsu Aruga, Michihiko Namba, Akihiko Gotoh 2012-05-08
8142849 Recording media, recording media-ink set, inkjet recording method and inkjet recording apparatus Tohru Ohshima, Naoya Morohoshi 2012-03-27
8118419 Ink jet recording method, recording device, ink/recording medium set, recording matter Naoya Morohoshi, Masayuki Koyano, Akihiko Gotoh 2012-02-21
8110257 Ink-jet recording method, ink-jet recording apparatus and recorded matter Hidefumi Nagashima 2012-02-07
8109622 Recording ink, ink cartridge, inkjet recording method, and inkjet recording apparatus Hiroshi Goto, Akihiko Matsuyama 2012-02-07
8096651 Ink-jet recording method, ink, ink cartridge, recording apparatus, and recorded matter Tohru Ohshima, Naoya Morohoshi, Michihiko Namba 2012-01-17
8044114 Ink for recording, and ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording method using the same Hisashi Habashi, Michihiko Namba, Mariko Kojima, Akihiko Gotoh, Tamotsu Aruga 2011-10-25
8029122 Recording ink, inkjet recording method and inkjet recording apparatus Mariko Kojima, Akihiko Gotoh, Akiko Bannai, Tomohiro Inoue 2011-10-04
7950793 Recording ink, ink cartridge, ink record, inkjet recording apparatus and inkjet recording process Tamotsu Aruga 2011-05-31
7938527 Ink, ink cartridge, ink jet recording apparatus, and ink jet recording method Tohru Ohshima, Naoya Morohoshi, Hiroyuki Kiyoi, Masanori Hirano, Shigetaka Sakakibara 2011-05-10
7922316 Inkjet recording apparatus and inkjet recording method Akiko Bannai, Eisuke Hori, Akihiko Gotoh 2011-04-12
7892340 Ink-jet recording ink, ink-jet recording ink set, ink-jet recording ink media set, ink cartridge, ink-jet recording method and ink-jet recording apparatus Michihiko Namba, Naoya Morohoshi, Tohru Ohshima, Akihiko Gotoh 2011-02-22
7810919 Recording ink, ink cartridge, ink record, inkjet recording apparatus, and inkjet recording method Mariko Kojima, Tomohiro Inoue, Akihiko Gotoh, Michihiko Namba, Hisashi Habashi +1 more 2010-10-12
7812068 Recording ink, inkjet recording method and inkjet recording apparatus using the same Hisashi Habashi, Akiko Bannai 2010-10-12
7699457 Recording ink, ink cartridge, ink record, inkjet recording apparatus, and inkjet recording method Michihiko Namba, Hisashi Habashi, Akihiko Gotoh, Tomohiro Inoue 2010-04-20
7682011 Recording ink, ink cartridge, ink record, inkjet recording apparatus and inkjet recording process Michihiko Namba, Hisashi Habashi, Mariko Kojima, Tomohiro Inoue, Akiko Bannai +1 more 2010-03-23
7374608 Ink for ink jet recording, ink jet recording method, ink cartridge and ink jet recording apparatus Hitoshi Arita, Nobutaka Osada, Kakuji Murakami, Akihiko Gotoh 2008-05-20
7370952 Ink, and, inkjet recording process, ink cartridge, recording unit, and inkjet recording apparatus using the ink Tomohiro Inoue 2008-05-13