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Takehiko Yamakawa

Sumitomo Electric Industries: 1 patents #1,404 of 3,885Top 40%
Overall (2003): #107,884 of 273,478Top 40%
1
Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6515559 In-band-flat-group-delay type dielectric filter and linearized amplifier using the same Toru Yamada, Toshio Ishizaki, Minoru Tachibana, Toshiaki Nakamura, Hiroyuki Nakamatsu 2003-02-04