TK

Toshio Kumagai

SE Seiko Epson: 128 patents #14 of 7,774Top 1%
SC Shimizu Construction Co.: 2 patents #41 of 352Top 15%
Bridgestone: 1 patents #1,586 of 2,860Top 60%
SG Seiko Group: 1 patents #32 of 90Top 40%
Overall (All Time): #8,274 of 4,157,543Top 1%
131
Patents All Time

Issued Patents All Time

Showing 1–25 of 131 patents

Patent #TitleCo-InventorsDate
12325247 Liquid reservoir, liquid ejecting apparatus, and method for controlling liquid ejecting apparatus Munechika Otsuru, Akira Shinoto 2025-06-10
11167560 Damper unit and liquid ejecting apparatus Yuki SHIOHARA, Hitotoshi Kimura 2021-11-09
11077677 Ink jet recording method, ultraviolet-ray curable ink, and ink jet recording apparatus Yoshihiro Kobayashi, Yusuke Mizutaki, Masaaki Ando, Hiroaki Kida, Kaoru Koike +1 more 2021-08-03
11072185 Liquid ejecting apparatus Yuki SHIOHARA, Satoru Kobayashi, Seiko Hamamoto 2021-07-27
11034158 Liquid ejecting apparatus and maintenance method thereof Seiko Hamamoto, Satoru Kobayashi, Nobuaki Kamiyama 2021-06-15
10737504 Liquid ejecting apparatus Yoshiharu Aruga, Hitoshi Matsumoto 2020-08-11
10717285 Liquid ejecting apparatus and method of operating liquid ejecting apparatus Yoshinori Nakajima, Takahiro Kanegae, Manabu Suzuki 2020-07-21
10625519 Ink jet recording method, ultraviolet-ray curable ink, and ink jet recording apparatus Yoshihiro Kobayashi, Yusuke Mizutaki, Masaaki Ando, Hiroaki Kida, Kaoru Koike +1 more 2020-04-21
10589529 Printing apparatus and printing method Kazunaga Suzuki 2020-03-17
10556442 Valve unit and liquid ejecting apparatus Yoshiharu Aruga, Hitoshi Matsumoto 2020-02-11
10293617 Valve unit and liquid ejecting apparatus Yoshiharu Aruga, Hitoshi Matsumoto 2019-05-21
10226954 Ink jet apparatus Koji Kitazawa 2019-03-12
10029483 Ink jet recording method, ultraviolet-ray curable ink, and ink jet recording apparatus Yoshihiro Kobayashi, Yusuke Mizutaki, Masaaki Ando, Hiroaki Kida, Kaoru Koike +1 more 2018-07-24
10005288 Liquid ejecting apparatus Yoshiharu Aruga, Hitoshi Matsumoto 2018-06-26
9925790 Valve driving device, functional liquid supply unit, and liquid droplet discharging apparatus Kazuhito Hori 2018-03-27
9925803 Printing apparatus Kazuhito Hori, Masaaki Ando 2018-03-27
9884487 Ink jet recording method, ultraviolet-ray curable ink, and ink jet recording apparatus Yoshihiro Kobayashi, Yusuke Mizutaki, Masaaki Ando, Hiroaki Kida, Kaoru Koike +1 more 2018-02-06
9878547 Cleaning liquid supplying apparatus and liquid droplet ejecting apparatus including the same Seiko Hamamoto, Hiroshi Asawa 2018-01-30
9796199 Ink jet apparatus Koji Kitazawa 2017-10-24
9770917 Liquid ejecting apparatus Yoshiharu Aruga, Hitoshi Matsumoto 2017-09-26
9616669 Liquid ejecting apparatus Yoshiharu Aruga, Hitoshi Matsumoto 2017-04-11
9550362 Mist collection device, liquid ejecting apparatus, and method for controlling mist collection device 2017-01-24
9498966 Valve unit Yoshiharu Aruga, Hitoshi Matsumoto 2016-11-22
9421784 Liquid ejecting apparatus Kaoru Koike 2016-08-23
9242474 Printing apparatus Yoshihiro Kobayashi, Norihiro Masuda 2016-01-26