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Yoshiki Yanagawa

Ricoh Company: 4 patents #178 of 1,810Top 10%
Overall (2017): #34,304 of 506,227Top 7%
4
Patents 2017

Issued Patents 2017

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
9850335 Copolymer, aqueous ink, and ink cartridge Shigeyuki Harada, Keita Katoh, Masayuki Fukuoka, Kazukiyo Nagai, Yuusuke Koizuka +4 more 2017-12-26
9850391 Ink, ink stored container, inkjet printing method, and inkjet printing device Masayuki Fukuoka, Shigeyuki Harada, Takuya Yamazaki, Kazukiyo Nagai, Yuusuke Koizuka +3 more 2017-12-26
9777091 Copolymer, ink, and ink container Masayuki Fukuoka, Shigeyuki Harada, Keita Katoh, Kazukiyo Nagai, Yuusuke Koizuka +4 more 2017-10-03
9590187 Substituent-eliminable diketopyrrolopyrrole derivative, organic semiconductor material precursor solution, organic semiconductor material, and organic semiconductor material film Ryota Arai 2017-03-07