KO

Koh Ohnuma

Ricoh Company: 5 patents #3,664 of 9,818Top 40%
Overall (All Time): #973,128 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
10670980 Toner, developer, and image forming apparatus Tsuyoshi Sugimoto, Shinya Nakayama, Hideyuki Santo, Shin Hasegawa, Suzuka Karato +1 more 2020-06-02
10073366 Toner, toner storage unit, image forming apparatus, and method for manufacturing toner Kohsuke Nagata, Ryuuta Yoshida, Shinya Nakayama, Tsuyoshi Sugimoto, Akinori Saitoh +5 more 2018-09-11
9880479 Toner, toner stored unit, image forming apparatus, and image forming method Hideyuki Santoh, Tsuyoshi Sugimoto, Akinori Saitoh, Shin Hasegawa, Suzuka Amemori +1 more 2018-01-30
9753387 Toner, developer and developer containing unit Shin Hasegawa, Tsuyoshi Sugimoto, Hideyuki Santo, Kohsuke Nagata, Suzuka Karato 2017-09-05
9639016 Toner, developer, image forming apparatus, and process cartridge Tsuyoshi Sugimoto, Shinya Nakayama, Hiroshi Yamada, Hideyuki Santo, Shin Hasegawa +2 more 2017-05-02