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 51–75 of 82 patents

Patent #TitleCo-InventorsDate
7284851 Inkjet recording ink, recording process and recording apparatus Akiko Bannai, Akihiko Gotoh, Mariko Kojima, Michihiko Namba, Tomohiro Inoue 2007-10-23
7278726 Ink jet recording ink set 2007-10-09
7094813 Ink-jet recording ink, ink-jet recording ink set, ink cartridge, ink-jet printer, and ink-jet printing method Michihiko Namba, Toshiroh Tokuno, Akihiko Gotoh 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, Kakuji Murakami, Tomoko Maeda, Akihiko Gotoh 2005-07-19
6899751 Ink for ink jet recording, ink jet recording method, ink cartridge and ink jet recording apparatus Hitoshi Arita, Nobutaka Osada, Kakuji Murakami, Akihiko Gotoh 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, Kakuji Murakami, Tomoko Maeda, Akihiko Gotoh 2004-05-04
6730155 Aqueous ink composition Akihiko Gotoh, Tomoko Maeda, Akiko Bannai, 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, Akihiko Gotoh, Akiko Bannai, Tetsuya Kaneko, Nobutaka Osada +4 more 2004-02-24
6688737 Recording liquid, inkjet recording method and recording equipment using the same Hitoshi Arita, Nobutaka Osada, Masayuki Koyano 2004-02-10
6637875 Aqueous recording liquid, recording method and apparatus using same Tetsuya Kaneko, Hitoshi Arita, Kakuji Murakami 2003-10-28
6613136 Recording ink composition and ink-jet printing method using the same Hitoshi Arita, Akiko Bannai, Masayuki Koyano 2003-09-02
6261349 Image recording method image recording apparatus and image recording acceleration liquid Akio Kojima, Masato Igarashi, Akiko Konishi, Hiroyuki Mochizuki, Masayuki Koyano +2 more 2001-07-17
6231652 Aqueous ink compositions and ink-jet printing method using the same Masayuki Koyano, Ikuko Yamada, Akio Kojima, Masato Igarashi, Akiko Konishi +2 more 2001-05-15
6120589 Set of color ink compositions for ink-jet printing and method of forming color images using the color ink set Akiko Bannai, Akio Kojima, Masato Igarashi, Masayuki Koyano, Hiroyuki Mochizuki +2 more 2000-09-19
5993524 Image recording method, image recording apparatus and image recording acceleration liquid Akio Kojima, Masato Igarashi, Akiko Bannai, Hiroyuki Mochizuki, Takanori Tsuyuki +2 more 1999-11-30
5972082 Aqueous ink composition and ink-jet printing method using the same Masayuki Koyano, Ikuko Yamada, Akio Kojima, Masato Igarashi, Akiko Konishi +2 more 1999-10-26
5882390 Recording ink composition and recording method using the same Akio Kojima, Masato Igarashi, Akiko Konishi, Hiroyuki Mochizuki, Takanori Tsuyuki +2 more 1999-03-16
5879439 Recording ink composition and recording method using the same Akio Kojima, Masato Igarashi, Akiko Konishi, Hiroyuki Mochizuki, Masayuki Koyano +2 more 1999-03-09
5810915 Aqueous ink composition and image formation method using the same Akiko Konishi, Masayuki Koyano 1998-09-22
5769957 Regenerating method and apparatus of image holding supporting member Kakuzi Murakami, Kiyoshi Tanikawa, Tadashi Saito, Toshiaki Tokita, Shigeru Fujita 1998-06-23
5736286 Method for recycling image-deposited recording material and liquid composition for use with the recycling method Tetsuya Kaneko, Kakuji Murakami 1998-04-07
5622550 Yellow ink composition for ink-jet printing and image recording method using the same Akiko Konishi, Masayuki Koyano 1997-04-22
5514208 Aqueous ink and method for recording image with the aqueous ink Akiko Konishi, Tetsuya Kaneko 1996-05-07