KK

Kouichi Kajiwara

HS Hitachi Automotive Systems: 4 patents #412 of 1,636Top 30%
HE Hitachi Vehicle Energy: 4 patents #13 of 95Top 15%
MA Maxell: 1 patents #286 of 437Top 70%
VJ Vehicle Energy Japan: 1 patents #42 of 73Top 60%
Overall (All Time): #483,010 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
12325302 Light source apparatus, and information display system and head-up display apparatus using the same Koji Hirata, Toshinori Sugiyama, Koji Fujita, Eiji Takagi 2025-06-10
11728518 Rectangular secondary battery Kohtaroh Ikeda 2023-08-15
9812676 Prismatic secondary battery Hayato Koguchi, Takeshi Hizono, Hiroaki Egawa 2017-11-07
9748554 Electric storage device and method for manufacturing electric storage device Sho Saimaru, Kinya Aota 2017-08-29
9252453 Rechargeable battery 2016-02-02
8986874 Prismatic cell and production method for the same Kazuaki Urano, Fujio Hirano, Kiyoyuki Sekine, Yasuhiro Matsuoka, Suguru Watashi 2015-03-24
8673470 Secondary cell Kinya Aota, Toshiro Fujita, Masaaki Iwasa 2014-03-18
D644176 Battery Yutaka Sato, Ryuji Kono, Mitsuru Koseki, Hidemasa Kawai, Hideyuki Shibanuma +8 more 2011-08-30
D644178 Battery Yutaka Sato, Ryuji Kono, Mitsuru Koseki, Hidemasa Kawai, Hideyuki Shibanuma +8 more 2011-08-30
D642978 Battery Yutaka Sato, Ryuji Kono, Mitsuru Koseki, Hidemasa Kawai, Hideyuki Shibanuma +8 more 2011-08-09