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Yoshiki Yanagawa

Ricoh Company: 6 patents #40 of 1,821Top 3%
Overall (2018): #16,097 of 503,207Top 4%
6
Patents 2018

Issued Patents 2018

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
10113078 Ink discharge device and ink discharge method Keita Katoh, Hiroshi Gotou, Takahiro Yoshida, Akihiko Matsuyama, Masahiko Ishikawa 2018-10-30
10035869 Copolymer, aqueous ink, and ink cartridge Shigeyuki Harada, Keita Katoh, Masayuki Fukuoka, Kazukiyo Nagai, Yuusuke Koizuka +2 more 2018-07-31
10011729 Ink, method for producing ink, ink storage container, recording device, and recording method Takuya Yamazaki, Takahiro Yoshida 2018-07-03
10000656 Ink, recorded matter, ink container, recording device, and recording method Akihiko Matsuyama, Kazukiyo Nagai, Tomoyuki Shimada, Shigeyuki Harada, Akiyoshi Sabu +3 more 2018-06-19
9988543 Ink, ink stored container, inkjet recording apparatus, and recorded matter Akihiko Matsuyama, Shigeyuki Harada, Masayuki Fukuoka, Takuya Yamazaki, Kazukiyo Nagai +3 more 2018-06-05
9896530 Copolymer, coloring material dispersion, ink, and ink store container Shigeyuki Harada, Kazukiyo Nagai, Yuusuke Koizuka, Tomoyuki Shimada, Takuya Yamazaki +3 more 2018-02-20