Inventor
HANATANI SHOICHI
JP9 patents
⚠️ This page may combine multiple inventors who share the name “HANATANI SHOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
8 patentsUS6362905B1Mar 26, 2002
Optical crossconnect apparatus and optical transmission system
HITACHI LTD36 citations92
US5548399AAug 20, 1996
Method and apparatus for testing a DC coupled optical receiver
HITACHI LTD31 citations92
US5422968AJun 6, 1995
Optical demultiplexing system with optical amplifiers
HITACHI LTD26 citations92
US5543629AAug 6, 1996
Superlattice avalanche photodiode (APD)
HITACHI LTD30 citations90
US6813445B2Nov 2, 2004
Optical crossconnect apparatus and optical transmission system
HITACHI LTD6 citations73
US6317230B1Nov 13, 2001
Optical cross-connect system and optical transmission system
HITACHI LTD14 citations73
US5324959AJun 28, 1994
Semiconductor optical device having a heterointerface therein
HITACHI LTD14 citations71
US7272314B2Sep 18, 2007
Optical crossconnect apparatus and optical transmission system
HITACHI LTD0 citations52