YK

Yuji Kishima

HC Hitachi Koki Co.: 7 patents #164 of 888Top 20%
KC Koki Holdings Co.: 5 patents #37 of 215Top 20%
📍 Ibaraki, JP: #845 of 6,779 inventorsTop 15%
Overall (All Time): #399,911 of 4,157,543Top 10%
12
Patents All Time

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
12405047 Electric device Takuya Kataoka, Kazuki Noguchi, Akihiro Kobayashi, Daisuke Nitawaki, Ibuki Kanda +2 more 2025-09-02
11979039 Charging device having two charging modes Akihiro Kobayashi, Tetsuya Monzen 2024-05-07
11626807 DC power supply device Takuya Yoshinari, Eiji Nakayama, Kazuhiko Funabashi, Haruhisa Fujisawa 2023-04-11
11490543 DC power supply device Naoto Ichihashi, Takuya Yoshinari 2022-11-01
11211868 DC power supply device Takuya Yoshinari 2021-12-28
9917452 Battery charger capable of efficiently cooling secondary battery in battery pack and charging circuit unit in battery charger Toshio Mizoguchi 2018-03-13
D800650 Battery pack Takafumi Itoh, Rui Akiba 2017-10-24
9561548 Electric tool Takeshi Takeda 2017-02-07
9496536 Backpack-type power supply Takuya Yoshinari, Haruhisa Fujisawa, Naoto Wakatabe 2016-11-15
9289832 Electric tool Takeshi Takeda 2016-03-22
D699672 Rechargeable battery Shingo Kosugi, Masanori Okada, Jun Enta 2014-02-18
8513838 Electric power tool Junichi Toukairin, Takashi Takeda, Yoshihiro Komuro, Yasuoki Kawahata 2013-08-20