Inventor
SEKINE KENRO
JP11 patents
⚠️ This page may combine multiple inventors who share the name “SEKINE KENRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
4 patentsUS7991290B2Aug 2, 2011
Optical prism and optical transceiver module for optical communications
HITACHI LTD23 citations92
US7653310B2Jan 26, 2010
Wavelength division multiplex (WDM) transmission system
HITACHI LTD9 citations82
US7903975B2Mar 8, 2011
Optical add-drop multiplexer
HITACHI LTD5 citations62
US7302183B2Nov 27, 2007
Gain tilt compensators and their systems
HITACHI LTD3 citations61
HITACHI COMM TECH LTD
4 patentsUS7653311B2Jan 26, 2010
Optical wavelength add-drop multiplexer
HITACHI COMM TECH LTD22 citations92
US7457542B2Nov 25, 2008
Optical access network system
HITACHI COMM TECH LTD13 citations76
US7526199B2Apr 28, 2009
Optical transmission equipment preventing malfunction in recovery from fault
HITACHI COMM TECH LTD3 citations62
US7457494B2Nov 25, 2008
Dispersion compensator, optical transmission system and optical transmission method
HITACHI COMM TECH LTD0 citations51