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Tokio Yamagiwa

HI Hitachi: 2 patents #771 of 3,950Top 20%
Overall (2002): #37,179 of 266,432Top 15%
2
Patents 2002

Issued Patents 2002

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6424162 Insulated device diagnosing system that prepares detection data from partial discharge signal such that periodic elements are given to different specific frequencies of the partial discharge signal Toshiaki Rokunohe, Fumihiro Endo, Ryouichi Shinohara 2002-07-23
6373687 Gas insulation switch Hiroki Honma, Koji Sasaki 2002-04-16