AG

Akihiko Gotoh

Ricoh Company: 49 patents #237 of 9,818Top 3%
Overall (All Time): #56,497 of 4,157,543Top 2%
49
Patents All Time

Issued Patents All Time

Showing 26–49 of 49 patents

Patent #TitleCo-InventorsDate
8083342 Inkjet recording apparatus and inkjet recording method Naoya Morohoshi 2011-12-27
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, Tamotsu Aruga, Kiyofumi Nagai 2011-10-25
8029122 Recording ink, inkjet recording method and inkjet recording apparatus Mariko Kojima, Kiyofumi Nagai, Akiko Bannai, Tomohiro Inoue 2011-10-04
7922316 Inkjet recording apparatus and inkjet recording method Akiko Bannai, Eisuke Hori, Kiyofumi Nagai 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, Kiyofumi Nagai 2011-02-22
7810919 Recording ink, ink cartridge, ink record, inkjet recording apparatus, and inkjet recording method Mariko Kojima, Tomohiro Inoue, Michihiko Namba, Hisashi Habashi, Akiko Bannai +1 more 2010-10-12
7699457 Recording ink, ink cartridge, ink record, inkjet recording apparatus, and inkjet recording method Michihiko Namba, Hisashi Habashi, Kiyofumi Nagai, 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
7490930 Inkjet recording apparatus and inkjet recording method Naoya Morohoshi 2009-02-17
7374608 Ink for ink jet recording, ink jet recording method, ink cartridge and ink jet recording apparatus Hitoshi Arita, Nobutaka Osada, Kiyofumi Nagai, Kakuji Murakami 2008-05-20
7284851 Inkjet recording ink, recording process and recording apparatus Akiko Bannai, Kiyofumi Nagai, Mariko Kojima, Michihiko Namba, Tomohiro Inoue 2007-10-23
7094813 Ink-jet recording ink, ink-jet recording ink set, ink cartridge, ink-jet printer, and ink-jet printing method Michihiko Namba, Toshiroh Tokuno, Kiyofumi Nagai 2006-08-22
7033013 Pretreatment liquid for recording material and image recording method using the pretreatment liquid Masayuki Koyano, Hitoshi Arita, Tetsuya Kaneko, Nobutaka Osada, Kakuji Murakami +3 more 2006-04-25
6918662 Ink composition and inkjet recording method and apparatus using the ink composition Hitoshi Arita, Nobutaka Osada, Kiyofumi Nagai, Kakuji Murakami, Tomoko Maeda 2005-07-19
6899751 Ink for ink jet recording, ink jet recording method, ink cartridge and ink jet recording apparatus Hitoshi Arita, Nobutaka Osada, Kiyofumi Nagai, Kakuji Murakami 2005-05-31
6786588 Pretreatment liquid for recording material and image recording method using the pretreatment liquid Masayuki Koyano, Hitoshi Arita, Tetsuya Kaneko, Nobutaka Osada, Kakuji Murakami +3 more 2004-09-07
6730149 Ink composition and inkjet recording method and apparatus using the ink composition Hitoshi Arita, Nobutaka Osada, Kiyofumi Nagai, Kakuji Murakami, Tomoko Maeda 2004-05-04
6730155 Aqueous ink composition Tomoko Maeda, Akiko Bannai, Kiyofumi Nagai, Hitoshi Arita, Tetsuya Kaneko +4 more 2004-05-04
6695443 Ink for ink jet recording, ink set for ink jet recording, method for ink jet recording, ink cartridge for ink jet recording, ink jet recording apparatus and recorded article Hitoshi Arita, Kiyofumi Nagai, Akiko Bannai, Tetsuya Kaneko, Nobutaka Osada +4 more 2004-02-24
6578958 Inkjet recording method and apparatus and ink therefor Akiko Bannai 2003-06-17
6020103 Liquid developer, method of producing the liquid developer and image formation using the same Kazuo Tsubuko, Tsuyoshi Asami, Yukio Tabata 2000-02-01
5952048 Ink composition and recording method using the same Kazuo Tsubuko, Nobutaka Kinoshita, Tsuyoshi Asami, Kazuhiko Umemura, Kazuyo Mizuno +1 more 1999-09-14
5851717 Developer for use in electrophotography, and image formation method using the same Kazuo Tsubuko, Tsuyoshi Asami, Kazuyo Mizuno, Akihiro Koseki 1998-12-22
5204207 Magenta color liquid developer for electrophotography Masahide Yamashita 1993-04-20