KN

Keiko Nakashige

HI Hitachi: 3 patents #10,712 of 28,497Top 40%
NO Nof: 1 patents #246 of 561Top 45%
Overall (All Time): #1,594,793 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7091870 Security system and method of security service business Hirofumi Tsutsumi, Seiji Tanaka, Yoshihiro Nishikawa, Yasuaki Takada, Toshihiko Ohta +3 more 2006-08-15
6940067 Hazardous material detection system Seiji Tanaka, Hiroyuki Fujita, Toshio Iwasaki, Yoshihiro Nishikawa 2005-09-06
6806450 Hazardous material detection system Seiji Tanaka, Hiroyuki Fujita, Toshio Iwasaki, Yoshihiro Nishikawa 2004-10-19