YK

Yuusuke Koizuka

Ricoh Company: 42 patents #327 of 9,818Top 4%
GC Goo Chemical Co.: 1 patents #20 of 39Top 55%
Overall (All Time): #72,596 of 4,157,543Top 2%
42
Patents All Time

Issued Patents All Time

Showing 1–25 of 42 patents

Patent #TitleCo-InventorsDate
12054623 Image forming method, set of processing fluid and ink, and image forming apparatus Tatsuya Takarada, Naoto Shimura, Nozomi Terai, Yuya Hirokawa 2024-08-06
11904600 Printing method and printing device Naoto Shimura, Yuya Hirokawa, Takayuki Shimizu, Itsuro Sasaki, Shunsuke Horie +2 more 2024-02-20
11851571 Ink set, inkjet printing apparatus, and inkjet printing method Naoto Shimura, Nozomi Terai, Tatsuya Takarada 2023-12-26
11660897 Printed matter Tatsuya Takarada, Naoto Shimura, Nozomi Terai, Takayuki Shimizu, Mio Akima 2023-05-30
11104137 Liquid discharging apparatus Yuichi Tanioku, Hisashi Habashi, Koji Katsuragi, Yuuki Yokohama, Masaki Kudo 2021-08-31
10844235 Ink, method of manufacturing ink, and ink cartridge Kazukiyo Nagai, Tomoyuki Shimada, Shigeyuki Harada, Akihiko Matsuyama, Yoshiki Yanagawa +3 more 2020-11-24
10836171 Ink and cleaning liquid set, inkjet printing device, inkjet printing method, and method of cleaning nozzle surface of inkjet discharging head Amika Sagara, Yuuki Yokohama, Masaki Kudo, Akihiko Matsuyama, Koichiro Oyama 2020-11-17
10807377 Ink, ink cartridge, image forming method, and printed matter Takuya Yamazaki, Shigeyuki Harada, Takuya Saiga, Hiroshi Gotou, Koichiro Oyama 2020-10-20
10781325 Curable composition, curable ink, accommodating container, image forming device, image forming method, cured matter, and acrylamide compound Mitsunobu Morita, Soh Noguchi, Takashi Okada, Kazukiyo Nagai, Tomoyuki Shimada 2020-09-22
10370548 Copolymer, ink including copolymer, and ink-stored container Shigeyuki Harada, Akihiko Matsuyama, Yoshiki Yanagawa, Masayuki Fukuoka, Takuya Yamazaki +3 more 2019-08-06
10280321 Ink, ink container, inkjet recording device, and recorded matter Akihiko Matsuyama, Hiroshi Gotou, Michihiko Namba, Hidetoshi Fujii, Amika Sagara +7 more 2019-05-07
10273373 Ink and method for producing same, and ink stored container, printing method, and printing apparatus Kazukiyo Nagai, Tomoyuki Shimada, Shigeyuki Harada, Koichiro Oyama, Takuya Yamazaki +3 more 2019-04-30
10233341 Ink, method of manufacturing ink, and ink cartridge Kazukiyo Nagai, Tomoyuki Shimada, Shigeyuki Harada, Akihiko Matsuyama, Yoshiki Yanagawa +3 more 2019-03-19
10035869 Copolymer, aqueous ink, and ink cartridge Shigeyuki Harada, Yoshiki Yanagawa, Keita Katoh, Masayuki Fukuoka, Kazukiyo Nagai +2 more 2018-07-31
10000656 Ink, recorded matter, ink container, recording device, and recording method Yoshiki Yanagawa, Akihiko Matsuyama, Kazukiyo Nagai, Tomoyuki Shimada, Shigeyuki Harada +3 more 2018-06-19
9988543 Ink, ink stored container, inkjet recording apparatus, and recorded matter Akihiko Matsuyama, Shigeyuki Harada, Yoshiki Yanagawa, Masayuki Fukuoka, Takuya Yamazaki +3 more 2018-06-05
9896530 Copolymer, coloring material dispersion, ink, and ink store container Shigeyuki Harada, Kazukiyo Nagai, Tomoyuki Shimada, Takuya Yamazaki, Koichiro Oyama +3 more 2018-02-20
9850391 Ink, ink stored container, inkjet printing method, and inkjet printing device Masayuki Fukuoka, Shigeyuki Harada, Yoshiki Yanagawa, Takuya Yamazaki, Kazukiyo Nagai +3 more 2017-12-26
9850335 Copolymer, aqueous ink, and ink cartridge Shigeyuki Harada, Keita Katoh, Masayuki Fukuoka, Kazukiyo Nagai, Tomoyuki Shimada +4 more 2017-12-26
9777091 Copolymer, ink, and ink container Masayuki Fukuoka, Shigeyuki Harada, Yoshiki Yanagawa, Keita Katoh, Kazukiyo Nagai +4 more 2017-10-03
9752037 Inkjet recording ink, ink cartridge, inkjet recording method, inkjet recording device and ink recorded matter Minoru Hakiri, Mitsuru Naruse, Masayasu Nonogaki, Keita Katoh, Akihiko Matsuyama +3 more 2017-09-05
9688871 Inkjet recording ink and ink cartridge using the ink, inkjet recording apparatus, inkjet recording method and ink recording matter Masayasu Nonogaki, Keita Katoh, Minoru Hakiri, Mitsuru Naruse, Akihiko Matsuyama +4 more 2017-06-27
9617439 Ink composition, ink cartridge, ink recording device, and recorded matter Akihiko Matsuyama, Shigeyuki Harada, Keita Katoh, Masayuki Fukuoka, Mitsuru Naruse +2 more 2017-04-11
9597891 Inkjet ink, method of manufacturing inkjet ink, ink cartridge, and inkjet recording device Masayasu Nonogaki, Mitsuru Naruse, Akihiko Matsuyama, Keita Katoh, Kazukiyo Nagai 2017-03-21
9441129 Ink for inkjet recording, ink container, and inkjet recording device Keita Katoh, Mitsuru Naruse, Masayasu Nonogaki, Akihiko Matsuyama, Kazukiyo Nagai 2016-09-13