MK

Masaaki Kageyama

AC Alps Electric Co.: 5 patents #368 of 2,177Top 20%
Overall (All Time): #1,042,397 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
6597344 Key switch disposed on keyboard input device and method of producing the same Tsuyoshi Narusawa 2003-07-22
6483050 Key switch with easily attachable key top Tsuyoshi Narusawa 2002-11-19
6312176 Keyboard apparatus Shouji Suganami, Seiichi Suga, Tsuyoshi Narusawa, Teruyasu Fukuyama 2001-11-06
D386488 Data entry keyboard Hideki Ito, Yoshirou Koutaka, Takahiro Murakami, Katsuyuki Katayama, Hiromi Chiba 1997-11-18
5066842 Key top Kazuyoshi Yamagata, Kyoichi Kaneko 1991-11-19