Inventor · disambiguated record
Seiji Sumi
Also filed as: SUMI SEIJI
5 granted patents·24 citations·filing 2004–2011
76Inventor score
Top patents by PatentIndex Score
5 records- 0179US7011458B2Optical moduleOPNEXT JAPAN INC·Filed 2005·Granted Mar 14, 2006·10 cites·15 claims
- 0278US7190872B2Semiconductor optical amplifier and optical module using the sameOPNEXT JAPAN INC·Filed 2006·Granted Mar 13, 2007·5 cites·14 claims
- 0359US7127145B2Semiconductor optical amplifier, and optical module using the sameOPNEXT JAPAN INC·Filed 2004·Granted Oct 24, 2006·5 cites·12 claims
- 0451US7409113B2Semiconductor electro-absorption optical modulator, semiconductor electro-absorption optical modulator integrated laser, optical transmitter module and optical moduleOPNEXT JAPAN INC·Filed 2004·Granted Aug 5, 2008·4 cites·9 claims
- 0542US8488918B2Semiconductor optical device, optical transmitter module, optical transceiver module, and optical transmission equipmentSUMI SEIJI·Filed 2011·Granted Jul 16, 2013·0 cites·19 claims
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