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Yasuhara Negi

HK Hamamatsu Photonics K.K.: 1 patents #936 of 1,436Top 70%
Overall (All Time): #3,316,784 of 4,157,543Top 80%
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Patent #TitleCo-InventorsDate
7486021 Electron tube with electron-bombarded semiconductor device Atsushi Uchiyama, Yasuyuki Egawa, Hiroyuki Kyushima, Suenori Kimura, Motohiro Suyama 2009-02-03