RK

Ryunosuke Kumagai

MA Makita: 32 patents #20 of 770Top 3%
📍 Anjo, JP: #71 of 1,609 inventorsTop 5%
Overall (All Time): #109,730 of 4,157,543Top 3%
32
Patents All Time

Issued Patents All Time

Showing 1–25 of 32 patents

Patent #TitleCo-InventorsDate
12220791 Impact tool Tokuo HIRABAYASHI, Hidenori Nagasaka, Manabu Sugimoto 2025-02-11
12064853 Impact tool Tokuo HIRABAYASHI, Tomoyuki Kondo 2024-08-20
11407091 Power tool Akira Tomonaga, Kazuya Arakawa 2022-08-09
11247323 Electric working machine and method of controlling rotational state of motor of electric working machine Masahiro Watanabe, Jiro Suzuki, Kosuke Ito 2022-02-15
11192223 Tool holding apparatus and power tool, and impact tool Tokuo HIRABAYASHI, Tomoyuki Kondo 2021-12-07
11045926 Impact tool Tokuo HIRABAYASHI, Hidenori Nagasaka, Manabu Sugimoto 2021-06-29
10994404 Electric tool Miyabi Ito, Shin Sugiura, Akira Mizutani, Takahiro Kawakami 2021-05-04
10967496 Impact tool Tokuo HIRABAYASHI 2021-04-06
10906163 Power tool Hidenori Nagasaka, Koji Tsukamoto, Tomonori Kawase, Kosuke Ito, Tokuo HIRABAYASHI +1 more 2021-02-02
10821577 Power tool Akira Tomonaga, Kazuya Arakawa 2020-11-03
10491148 Electric working machine Yoshitaka Ichikawa, Tokuo HIRABAYASHI 2019-11-26
10478950 Power tool Hidenori Nagasaka, Koji Tsukamoto, Tomonori Kawase, Kosuke Ito, Tokuo HIRABAYASHI +1 more 2019-11-19
10343268 Rotary impact tool Tokuo HIRABAYASHI, Takeshi Nishimiya, Goshi Ishikawa, Takuya Kusakawa 2019-07-09
10322498 Electric power tool Goshi Ishikawa, Takuya Kusakawa, Yoshitaka Ichikawa, Tokuo HIRABAYASHI 2019-06-18
10213907 Impact tool Tokuo HIRABAYASHI, Hidenori Nagasaka, Manabu Sugimoto 2019-02-26
10213912 Impact tool Tokuo HIRABAYASHI 2019-02-26
10155304 Electric tool Miyabi Ito, Shin Sugiura, Akira Mizutani, Takahiro Kawakami 2018-12-18
9676092 Electric power tool 2017-06-13
9643300 Impact tool Tokuo HIRABAYASHI, Hidenori Nagasaka, Manabu Sugimoto 2017-05-09
9630310 Electric tool Miyabi Ito, Shin Sugiura, Akira Mizutani, Takahiro Kawakami 2017-04-25
9463565 Rechargeable electric tool Hidenori Nagasaka 2016-10-11
9016397 Electric power tool suspending attachment and electric power tool equipped with the same Takao Kuroyanagi, Hidenori Nagasaka 2015-04-28
8952581 Electric tools Akira Naito, Hidenori Nagasaka 2015-02-10
8827003 Impact tool Hidenori Nagasaka 2014-09-09
8733471 Rechargeable electric tool Hidenori Nagasaka 2014-05-27