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Yuuki Yokohama

Ricoh Company: 28 patents #700 of 9,818Top 8%
Overall (All Time): #135,255 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #TitleCo-InventorsDate
12344756 Liquid composition, method of applying liquid, device for applying liquid, pre-processing fluid, and set of pre-processing fluid and ink Shun Saito, Kento SUGITA, Koichiro Oyama, Mizuki Kuroha, Satoshi Takahashi +1 more 2025-07-01
11760893 Ink, image forming apparatus, and image forming method Kento SUGITA, Azumi Miyaake, Satoshi Takahashi, Koichiro Oyama, Mizuki Kuroha 2023-09-19
11292932 Ink set, recording device, and method of recording Hiroshi Gotou, Kaori Toyama, Masayuki Fukuoka 2022-04-05
11274221 Ink, ink set, ink container, image forming method, image forming apparatus and recorded matter Kazuhiko Umemura, Akihiko Matsuyama, Amika Sagara, Masaki Kudo, Mayumi Yoshihara +1 more 2022-03-15
11104137 Liquid discharging apparatus Yuichi Tanioku, Hisashi Habashi, Yuusuke Koizuka, Koji Katsuragi, Masaki Kudo 2021-08-31
11059983 Ink, ink container, inkjet recording device, and recording method Akihiko Matsuyama, Amika Sagara, Masaki Kudo, Kazuhiko Umemura, Yukihiro Imanaga +1 more 2021-07-13
10836171 Ink and cleaning liquid set, inkjet printing device, inkjet printing method, and method of cleaning nozzle surface of inkjet discharging head Amika Sagara, Masaki Kudo, Yuusuke Koizuka, Akihiko Matsuyama, Koichiro Oyama 2020-11-17
10781331 Ink set, recording device, and method of recording Hiroshi Gotou, Kaori Toyama, Masayuki Fukuoka 2020-09-22
10457079 Ink, inkjet recording method, ink cartridge, and image recording device Kaori Toyama, Hiromi Sakaguchi, Hideaki Nishimura, Masayuki Fukuoka, Shuusuke Someno 2019-10-29
10233345 Ink set, recording device, and method of recording Hiroshi Gotou, Kaori Toyama, Masayuki Fukuoka 2019-03-19
10195885 Ink, inkjet recording method, ink cartridge, and image recording device Kaori Toyama, Hiromi Sakaguchi, Hideaki Nishimura, Masayuki Fukuoka, Shuusuke Someno 2019-02-05
10131805 Ink, ink stored container, inkjet recording apparatus, and printed matter Keita Katoh, Hiroshi Gotou, Hiromi Sakaguchi, Yukiko Takamura 2018-11-20
9938421 Set of ink and print medium, inkjet printing method, inkjet printing apparatus, printed matter, ink, and ink stored container Yukiko Takamura, Hiroshi Gotou, Hiromi Sakaguchi, Keita Katoh 2018-04-10
9873809 Ink, image forming method, image forming apparatus, and recorded matter Hiroshi Gotou, Keita Katoh, Yukiko Takamura, Hiromi Sakaguchi 2018-01-23
9518190 Inkjet ink, ink cartridge, inkjet recording method, inkjet recording device, and inkjet recorded matter Hiroshi Gotou, Kiyofumi Nagai, Michihiko Namba, Hidetoshi Fujii 2016-12-13
9169407 Ink for inkjet recording, inkjet recording method using the ink, and ink cartridge that accommodates the ink Akihiko Gotoh, Mariko Kojima 2015-10-27
9109129 Inkjet ink, inkjet recording method, and inkjet recording apparatus Hiroshi Goto, Hidetoshi Fujii 2015-08-18
9085706 Inkjet ink, ink cartridge, inkjet recording method, inkjet recording device, and inkjet recorded matter Hiroshi Gotou, Kiyofumi Nagai, Michihiko Namba, Hidetoshi Fujii 2015-07-21
9028600 Inkjet ink, inkjet recording method, and inkjet recording device Hiroshi Goto, Akihiko Gotoh, Kiyofumi Nagai, Hidetoshi Fujii 2015-05-12
8888269 Inkjet recording method Hiroshi Gotou, Hidetoshi Fujii 2014-11-18
8845800 Image forming method Hiroshi Gotou, Hidetoshi Fujii 2014-09-30
8746869 Ink for inkjet recording, inkjet recording method using the same, ink cartridge housing the same, and recorded matter Akihiko Matsuyama, Ichiroh Fujii, Kiyofumi Nagai, Hiroshi Gotou 2014-06-10
8721034 Inkjet recording method Hiroshi Gotou, Hidetoshi Fujii 2014-05-13
8680175 Inkjet ink, and ink cartridge, inkjet recording method, inkjet recording apparatus and ink record using the same Shigeo Hatada, Keishi Taniguchi, Shigeru Kusakata, Ichiroh Fujii, Akihiko Matsuyama 2014-03-25
8651650 Inkjet recording ink, inkjet recording inkset, ink cartridge, inkjet recording method, and recorded matter Akihiko Matsuyama, Ichiroh Fujii, Kiyofumi Nagai, Akihiko Gotoh, Mariko Kojima +2 more 2014-02-18