KI

Keiji Ishikawa

Sumitomo Electric Industries: 5 patents #5,365 of 21,551Top 25%
DE Denso: 3 patents #3,857 of 11,792Top 35%
PA Panasonic: 3 patents #7,617 of 21,108Top 40%
FC Furukawa Electric Co.: 1 patents #1,242 of 2,370Top 55%
Overall (All Time): #460,803 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
9835205 Friction clutch Takayuki Hirose, Yoshiki Tada 2017-12-05
9674595 Speaker and manufacturing method thereof Masamichi Ara, Kenichi Ajiki, Toshinori Yamaji 2017-06-06
9008350 Loudspeaker, electronic device and mobile device both including the same, and method of producing the same Kenichi Ajiki, Toshinori Yamaji, Masamichi Ara 2015-04-14
8231737 Dish washer/dryer Shigeru Iwanaga, Tsuyoshi Inada, Noriyoshi Matoba 2012-07-31
7993227 Hub for power transmission apparatus Yasuo Tabuchi, Michiyasu Nosaka, Motohiko Ueda, Takayuki Suzuki, Yoshiki Tada 2011-08-09
7909701 Power transmission apparatus Yasuo Tabuchi, Michiyasu Nosaka, Yoshihiro Nakata, Takayuki Suzuki 2011-03-22
7123738 Loudspeaker Shinya Mizone, Shoouji Nakajima, Akira Kabumoto, Satoshi Ono 2006-10-17
D524299 Speaker for an automobile Hiromi Sawa 2006-07-04
D523849 Speaker for an automobile Hiromi Sawa 2006-06-27
D523422 Speaker for an automobile Hiromi Sawa 2006-06-20
7020301 Loudspeaker Satoshi Koura, Takashi Suzuki, Kazuro Okuzawa 2006-03-28