Inventor
SUMI SEIJI
JP5 patents
⚠️ This page may combine multiple inventors who share the name “SUMI SEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OPNEXT JAPAN INC
4 patentsUS7011458B2Mar 14, 2006
Optical module
OPNEXT JAPAN INC10 citations72
US7409113B2Aug 5, 2008
Semiconductor electro-absorption optical modulator, semiconductor electro-absorption optical modulator integrated laser, optical transmitter module and optical module
OPNEXT JAPAN INC4 citations60
US7190872B2Mar 13, 2007
Semiconductor optical amplifier and optical module using the same
OPNEXT JAPAN INC5 citations60
US7127145B2Oct 24, 2006
Semiconductor optical amplifier, and optical module using the same
OPNEXT JAPAN INC5 citations60