Inventor · disambiguated record
Eiji Tsumura
Also filed as: TSUMURA EIJI
15 granted patents·150 citations·filing 2001–2021
92Inventor score
Top patents by PatentIndex Score
15 records- 0189US7317742B2Optical sub-assembly having a thermo-electric cooler and an optical transceiver using the optical sub-assemblySUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Granted Jan 8, 2008·15 cites·15 claims
- 0286US6600611B2Optical moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2002·Granted Jul 29, 2003·37 cites·3 claims
- 0381US9477051B2Optical transceiver having auxiliary area to install Mach-Zehnder modulatorSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Oct 25, 2016·4 cites·13 claims
- 0477US6567441B2Source follower circuit, laser driving apparatus, semiconductor laser apparatus, current-voltage convertion circuit, and light receiving circuitSUMITOMO ELECTRIC INDUSTRIES·Filed 2001·Granted May 20, 2003·15 cites·18 claims
- 0576US7026655B2Light-transmitting module containing an driving device in a packageSUMITOMO ELECTRIC INDUSTRIES·Filed 2004·Granted Apr 11, 2006·17 cites·19 claims
- 0675US6976795B2Optical device and optical moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2003·Granted Dec 20, 2005·16 cites·17 claims
- 0774US7463659B2Can-type optical transmitting module utilizing a laser diode with impedance matching resistorsSUMITOMO ELECTRIC INDUSTRIES·Filed 2004·Granted Dec 9, 2008·12 cites·7 claims
- 0871US7218657B2Optical transmitting module having a can type package and providing a temperature sensor thereinSUMITOMO ELECTRIC INDUSTRIES·Filed 2004·Granted May 15, 2007·10 cites·9 claims
- 0969US9766483B2Optical transceiver implementing erbium doped fiber amplifierSUMITOMO ELECTRIC INDUSTRIES·Filed 2017·Granted Sep 19, 2017·1 cites·13 claims
- 1068US6994480B2Optical link moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2003·Granted Feb 7, 2006·11 cites·11 claims
- 1161US11901946B2Optical transmitterSUMITOMO ELECTRIC INDUSTRIES·Filed 2021·Granted Feb 13, 2024·0 cites·7 claims
- 1253US6755577B2Optical moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2002·Granted Jun 29, 2004·4 cites·4 claims
- 1352US7192201B2Optical transmitting module having a de-coupling inductor thereinSUMITOMO ELECTRIC INDUSTRIES·Filed 2004·Granted Mar 20, 2007·5 cites·15 claims
- 1451US12429657B2Optical device and manufacturing method for optical deviceSEDI INC·Filed 2021·Granted Sep 30, 2025·0 cites·5 claims
- 1546US6652160B2Transmission optical moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2002·Granted Nov 25, 2003·3 cites·3 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →