Inventor · disambiguated record
Naoya Henmi
Also filed as: HENMI NAOYA
47 granted patents·4 pending applications·1,603 citations·filing 1987–2006
99Inventor score
Files withNEC CORP50
Top patents by PatentIndex Score
51 records- 0194US4805235AOptical transmitter comprising an optical frequency discriminatorNEC CORP·Filed 1987·Granted Feb 14, 1989·144 cites·4 claims
- 0293US6657952B1Ring network for sharing protection resource by working communication pathsNEC CORP·Filed 1998·Granted Dec 2, 2003·109 cites·18 claims
- 0390US6115517AOptical communication network apparatus and optical switching networkNEC CORP·Filed 1998·Granted Sep 5, 2000·92 cites·12 claims
- 0488US6137603AOptical network, optical division and insertion node and recovery system from network failureNEC CORP·Filed 1997·Granted Oct 24, 2000·83 cites·3 claims
- 0587US7280470B2Ring network for sharing protection resource by working communication pathsNEC CORP·Filed 2003·Granted Oct 9, 2007·23 cites·6 claims
- 0687US6957018B2Optical packet exchange system and optical switchNEC CORP·Filed 2002·Granted Oct 18, 2005·26 cites·13 claims
- 0787US6404525B1Optical add-drop multiplexerNEC CORP·Filed 1998·Granted Jun 11, 2002·73 cites·10 claims
- 0887US5812290AOptical switching unit and control method for sameNEC CORP·Filed 1996·Granted Sep 22, 1998·92 cites·3 claims
- 0985US6760552B1Optical receiving circuit and optical communication deviceNEC CORP·Filed 2000·Granted Jul 6, 2004·31 cites·15 claims
- 1084US5392303AFrequency stabilization method of semiconductor laser, frequency-stabilized light source and laser moduleNEC CORP·Filed 1994·Granted Feb 21, 1995·47 cites·24 claims
- 1182US6347168B1Optical switch and optical switch systemNEC CORP·Filed 2000·Granted Feb 12, 2002·21 cites·29 claims
- 1281US6771907B1Optical ring systemNEC CORP·Filed 2000·Granted Aug 3, 2004·24 cites·13 claims
- 1380US6570687B2Optical packet exchange system and optical switchNEC CORP·Filed 2002·Granted May 27, 2003·13 cites·6 claims
- 1479US5227908AOptical communication apparatus using intensity modulationNEC CORP·Filed 1991·Granted Jul 13, 1993·64 cites·9 claims
- 1577US5757526AOptical communication network and method for optically detecting a faultNEC CORP·Filed 1996·Granted May 26, 1998·54 cites·30 claims
- 1675US6373911B1Bit synchronization circuitNEC CORP·Filed 1999·Granted Apr 16, 2002·89 cites·9 claims
- 1775US6333800B1Optical communication system using wavelength-division multiplexed lightNEC CORP·Filed 2000·Granted Dec 25, 2001·10 cites·13 claims
- 1873US6895183B2Optical add-drop multiplexerNEC CORP·Filed 2002·Granted May 17, 2005·9 cites·13 claims
- 1973US5887039AData transmission system using specific pattern for synchronizationNEC CORP·Filed 1994·Granted Mar 23, 1999·66 cites·8 claims
- 2070US6441935B1Optical packet exchange system and optical switchNEC CORP·Filed 1998·Granted Aug 27, 2002·27 cites·5 claims
- 2169US7197246B2Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexerNEC CORP·Filed 2002·Granted Mar 27, 2007·6 cites·28 claims
- 2267US6061156AOptical transmission systemNEC CORP·Filed 1998·Granted May 9, 2000·33 cites·12 claims
- 2367US5457559AApparatus for extracting an optical clock and apparatus for demultiplexing a time-division multiplexed signalNEC CORP·Filed 1994·Granted Oct 10, 1995·50 cites·8 claims
- 2466US5184243AOptical transmitting apparatus for minimal dispersion along an optical fiberNEC CORP·Filed 1990·Granted Feb 2, 1993·39 cites·6 claims
- 2565US6400498B1Optical signal repeating and amplifying device and optical level adjusting deviceNEC CORP·Filed 1998·Granted Jun 4, 2002·29 cites·13 claims
- 2665US5687013AOptical communication system having loop-back function for informing congestion state of receiving nodeNEC CORP·Filed 1995·Granted Nov 11, 1997·27 cites·9 claims
- 2764US6271949B1Optical communication system using wavelength-division multiplexed lightNEC CORP·Filed 1997·Granted Aug 7, 2001·23 cites·24 claims
- 2863US5675428AOptical communication apparatusNEC CORP·Filed 1995·Granted Oct 7, 1997·31 cites·16 claims
- 2963US5325225AMethod of optical transmission and optical transmitter used in the sameNEC CORP·Filed 1993·Granted Jun 28, 1994·33 cites·17 claims
- 3062US6466344B2Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexerNEC CORP·Filed 2001·Granted Oct 15, 2002·5 cites·9 claims
- 3162US5675429AOptical communication transmission systemNEC CORP·Filed 1995·Granted Oct 7, 1997·22 cites·4 claims
- 3261US6429955B1Optical networkNEC CORP·Filed 1998·Granted Aug 6, 2002·22 cites·9 claims
- 3360US5905587AOptical network deviceNEC CORP·Filed 1997·Granted May 18, 1999·22 cites·9 claims
- 3460US5506920AOptical wavelength tunable filterNEC CORP·Filed 1994·Granted Apr 9, 1996·21 cites·3 claims
- 3559US6407834B1Optical wave network system and method of monitoring a network troubleNEC CORP·Filed 1998·Granted Jun 18, 2002·22 cites·28 claims
- 3654US6809846B2Optical switch and optical networkNEC CORP·Filed 2003·Granted Oct 26, 2004·2 cites·36 claims
- 3754US6538779B1Optical signal monitoring method and apparatusNEC CORP·Filed 1999·Granted Mar 25, 2003·30 cites·15 claims
- 3854US6125104ANetwork node for switching quality detector to incoming signal specified by request message from adjacent nodeNEC CORP·Filed 1997·Granted Sep 26, 2000·18 cites·13 claims
- 3953US7126950B2Method and system for transmission and reception of asynchronously multiplexed signalsNEC CORP·Filed 2001·Granted Oct 24, 2006·3 cites·46 claims
- 4053US6445473B1Optical switching apparatus using wavelength division multiplexing technologyNEC CORP·Filed 1999·Granted Sep 3, 2002·14 cites·20 claims
- 4150US5687181AParallel data transmission unit using byte error correcting codeNEC CORP·Filed 1995·Granted Nov 11, 1997·25 cites·4 claims
- 4246US2006193325A1Method and system for transmission and reception of asynchronously multiplexed signalsNEC CORP·Filed 2006·Application pending·0 cites
- 4344US2002126372A1Optical signal repeating and amplifying device and optical level adjusting deviceFiled 2002·Application pending·0 cites
- 4443US2003002106A1Cross-connect switch and networkNEC CORP·Filed 2002·Application pending·0 cites
- 4542US6643042B1Optical communication network nodeNEC CORP·Filed 1998·Granted Nov 4, 2003·9 cites·19 claims
- 4641USRE37621EOptical communication transmission systemNEC CORP·Filed 1999·Granted Apr 2, 2002·7 cites·29 claims
- 4739US2001026565A1Wavelength multiplexing system, wavelength adjusting system, and optical transmitterNEC CORP·Filed 2001·Application pending·0 cites
- 4838US4765738AMethod and apparatus of measuring frequency response in an optical receiving systemNEC CORP·Filed 1987·Granted Aug 23, 1988·7 cites·8 claims
- 4935US6424440B1Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexerNEC CORP·Filed 1998·Granted Jul 23, 2002·2 cites·12 claims
- 5032US6081557ADatalink system and communication networkNEC CORP·Filed 1997·Granted Jun 27, 2000·4 cites·4 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →