Inventor · disambiguated record
Sunao Kakizaki
Also filed as: KAKIZAKI SUNAO
9 granted patents·3 pending applications·103 citations·filing 1994–2007
88Inventor score
Files withHITACHI LTD9
Top patents by PatentIndex Score
12 records- 0182US6933852B2Optical switching apparatus and optical communication network systemHITACHI LTD·Filed 2002·Granted Aug 23, 2005·18 cites·12 claims
- 0276US6975811B1Optical one-to-one protection switching apparatusHITACHI LTD·Filed 2000·Granted Dec 13, 2005·15 cites·21 claims
- 0374US6778725B1Optical switching apparatus, optical transmission system and method of setting up for optical signal routeHITACHI LTD·Filed 2002·Granted Aug 17, 2004·9 cites·13 claims
- 0473US7356257B2Optical switching apparatus and optical communication network systemHITACHI LTD·Filed 2005·Granted Apr 8, 2008·4 cites·12 claims
- 0572US6434286B2Optical signal switching apparatusHITACHI LTD·Filed 2001·Granted Aug 13, 2002·12 cites·18 claims
- 0669US5627923AThree-dimensional opto-electric integrated circuit using optical wiringHITACHI LTD·Filed 1994·Granted May 6, 1997·33 cites·19 claims
- 0768US6839480B2Optical switching apparatus, optical transmission system and method of setting up for optical signal routeHITACHI LTD·Filed 2003·Granted Jan 4, 2005·6 cites·2 claims
- 0865US7542672B2Optical switching apparatus with optical reflection monitor and reflection monitoring systemHITACHI LTD·Filed 2007·Granted Jun 2, 2009·4 cites·4 claims
- 0957US7206475B2Optical switching apparatus, optical transmission system and method of setting up for optical signal routeHITACHI LTD·Filed 2004·Granted Apr 17, 2007·2 cites·2 claims
- 1043US2004131366A1Wavelength tunable optical transmitter, optical transponder and optical transmission systemFiled 2003·Application pending·0 cites
- 1139US2001046074A1Protection switching apparatus for 1 + 1 optical transmission linesFiled 2001·Application pending·0 cites
- 1229US2003026524A1Optical switching apparatus with optical reflection monitor and reflection monitoring systemFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →