Inventor · disambiguated record
Shoichi Hanatani
Also filed as: HANATANI SHOICHI
9 granted patents·1 pending application·176 citations·filing 1992–2004
90Inventor score
Top patents by PatentIndex Score
10 records- 0183US7242860B2Optical protection switching using 2 by 2 switching functionsHITACHI AMERICA LTD·Filed 2002·Granted Jul 10, 2007·19 cites·33 claims
- 0274US6362905B1Optical crossconnect apparatus and optical transmission systemHITACHI LTD·Filed 1998·Granted Mar 26, 2002·36 cites·8 claims
- 0364US6813445B2Optical crossconnect apparatus and optical transmission systemHITACHI LTD·Filed 2002·Granted Nov 2, 2004·6 cites·6 claims
- 0464US5422968AOptical demultiplexing system with optical amplifiersHITACHI LTD·Filed 1994·Granted Jun 6, 1995·26 cites·17 claims
- 0563US5548399AMethod and apparatus for testing a DC coupled optical receiverHITACHI LTD·Filed 1993·Granted Aug 20, 1996·31 cites·9 claims
- 0661US5543629ASuperlattice avalanche photodiode (APD)HITACHI LTD·Filed 1995·Granted Aug 6, 1996·30 cites·24 claims
- 0749US6317230B1Optical cross-connect system and optical transmission systemHITACHI LTD·Filed 1998·Granted Nov 13, 2001·14 cites·15 claims
- 0848US5324959ASemiconductor optical device having a heterointerface thereinHITACHI LTD·Filed 1992·Granted Jun 28, 1994·14 cites·12 claims
- 0947US7272314B2Optical crossconnect apparatus and optical transmission systemHITACHI LTD·Filed 2004·Granted Sep 18, 2007·0 cites·2 claims
- 1043US2001033403A1Optical cross-connect system and optical transmission systemFiled 2001·Application pending·0 cites
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