Inventor
NAGAKUBO YASUNORI
JP15 patents
⚠️ This page may combine multiple inventors who share the name “NAGAKUBO YASUNORI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
14 patentsUS5680246AOct 21, 1997
Optical amplifier and optical transmission apparatus
FUJITSU LTD64 citations96
US5900959AMay 4, 1999
Optical transmitter, optical communication system and optical communication method
FUJITSU LTD70 citations95
US5900621AMay 4, 1999
Light transmitter having an automatic bias control circuit
FUJITSU LTD56 citations95
US5515682AMay 14, 1996
Peltier control circuit and a peltier device structure
FUJITSU LTD69 citations95
US6229833B1May 8, 2001
Laser diode protecting circuit and laser driving current control circuit
FUJITSU LTD53 citations92
US5973812AOct 26, 1999
Optical transmitter and optical communication system
FUJITSU LTD26 citations92
US5736875AApr 7, 1998
Discrimination circuit capable of automatically optimizing discrimination level and discrimination phase
FUJITSU LTD28 citations92
US6040931AMar 21, 2000
Optical transmitter, terminal-station apparatus having the optical transmitter, and optical communication system
FUJITSU LTD23 citations91
US5548435AAug 20, 1996
Optical Transmitter
FUJITSU LTD46 citations89
US7648289B2Jan 19, 2010
Module having a handle to be operated to attach the module to a cage
FUJITSU LTD13 citations84
US7031621B2Apr 18, 2006
Optical receiving device
FUJITSU LTD8 citations73
US5966938AOct 19, 1999
Peltier control circuit and a peltier device structure
FUJITSU LTD11 citations73
US7257332B2Aug 14, 2007
Optical transmitter and its control method
FUJITSU LTD7 citations69
US7970291B2Jun 28, 2011
Optical-receiving apparatus and bias-voltage-control method used for the optical-receiving apparatus
FUJITSU LTD6 citations62