Inventor
TSUMURA EIJI
JP15 patents
⚠️ This page may combine multiple inventors who share the name “TSUMURA EIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO ELECTRIC INDUSTRIES
14 patentsUS6600611B2Jul 29, 2003
Optical module
SUMITOMO ELECTRIC INDUSTRIES37 citations91
US7317742B2Jan 8, 2008
Optical sub-assembly having a thermo-electric cooler and an optical transceiver using the optical sub-assembly
SUMITOMO ELECTRIC INDUSTRIES15 citations86
US7463659B2Dec 9, 2008
Can-type optical transmitting module utilizing a laser diode with impedance matching resistors
SUMITOMO ELECTRIC INDUSTRIES12 citations84
US7218657B2May 15, 2007
Optical transmitting module having a can type package and providing a temperature sensor therein
SUMITOMO ELECTRIC INDUSTRIES10 citations84
US7026655B2Apr 11, 2006
Light-transmitting module containing an driving device in a package
SUMITOMO ELECTRIC INDUSTRIES17 citations84
US6994480B2Feb 7, 2006
Optical link module
SUMITOMO ELECTRIC INDUSTRIES11 citations83
US6976795B2Dec 20, 2005
Optical device and optical module
SUMITOMO ELECTRIC INDUSTRIES16 citations83
US6567441B2May 20, 2003
Source follower circuit, laser driving apparatus, semiconductor laser apparatus, current-voltage convertion circuit, and light receiving circuit
SUMITOMO ELECTRIC INDUSTRIES15 citations82
US9477051B2Oct 25, 2016
Optical transceiver having auxiliary area to install Mach-Zehnder modulator
SUMITOMO ELECTRIC INDUSTRIES4 citations72
US11901946B2Feb 13, 2024
Optical transmitter
SUMITOMO ELECTRIC INDUSTRIES0 citations62
US7192201B2Mar 20, 2007
Optical transmitting module having a de-coupling inductor therein
SUMITOMO ELECTRIC INDUSTRIES5 citations62
US6755577B2Jun 29, 2004
Optical module
SUMITOMO ELECTRIC INDUSTRIES4 citations61
US6652160B2Nov 25, 2003
Transmission optical module
SUMITOMO ELECTRIC INDUSTRIES3 citations60
US9766483B2Sep 19, 2017
Optical transceiver implementing erbium doped fiber amplifier
SUMITOMO ELECTRIC INDUSTRIES1 citations51