NN

Naoki Nakatsugawa

HI Hitachi: 5 patents #7,555 of 28,497Top 30%
Overall (All Time): #1,018,113 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
8189325 Switchgear Takuya Kurogi, Kenji Tsuchiya, Takumi Ishikawa, Nobuyuki Yamada 2012-05-29
8045322 Solid insulated bus switchgear Takuya Kurogi, Kenji Tsuchiya, Takumi Ishikawa 2011-10-25
7983023 Earthing equipment for switchgear Kenichi Shoda, Takuya Kurogi, Kenji Tsuchiya, Takumi Ishikawa 2011-07-19
6259051 Vacuum switch and a vacuum switchgear using the same Toru Tanimizu, Masato Kobayashi, Shuichi Kikukawa, Ayumu Morita, Minoru Suzuki +6 more 2001-07-10
6144005 Vacuum switch and a vacuum switchgear using the same Toru Tanimizu, Masato Kobayashi, Shuichi Kikukawa, Ayumu Morita, Minoru Suzuki +6 more 2000-11-07