Inventor · disambiguated record
Masaki Ohira
Also filed as: OHIRA MASAAKI · OHIRA MASAKI
29 granted patents·3 pending applications·414 citations·filing 1985–2024
97Inventor score
Top patents by PatentIndex Score
32 records- 0192US7548694B2Apparatus of adjusting optical signal transmission timingHITACHI COMM TECH LTD·Filed 2007·Granted Jun 16, 2009·15 cites·11 claims
- 0290US8811819B2Optical multiplexing terminal device, wavelength multiplexing passive optical network system and downlink wavelength transmission methodKAZAWA TOHRU·Filed 2009·Granted Aug 19, 2014·16 cites·7 claims
- 0388US7680414B2Passive optical network system and operating method thereofHITACHI LTD·Filed 2007·Granted Mar 16, 2010·13 cites·1 claims
- 0488US6721268B1Method and apparatus for multiplex transmissionHITACHI LTD·Filed 1998·Granted Apr 13, 2004·77 cites·17 claims
- 0587US8457492B2Optical access systemOHIRA MASAKI·Filed 2010·Granted Jun 4, 2013·13 cites·11 claims
- 0686US7024616B2Method for encoding/decoding error correcting code, transmitting apparatus and networkHITACHI LTD·Filed 2001·Granted Apr 4, 2006·43 cites·20 claims
- 0785US7725031B2Passive optical network system and ranging system thereofHITACHI LTD·Filed 2008·Granted May 25, 2010·7 cites·7 claims
- 0885US7489869B2Passive optical network system and ranging system thereofHITACHI COMM TECH LTD·Filed 2007·Granted Feb 10, 2009·7 cites·4 claims
- 0984US7512867B2Method for encoding/decoding error correcting code, transmitting apparatus and networkHITACHI LTD·Filed 2006·Granted Mar 31, 2009·10 cites·23 claims
- 1084US6697386B2Multiplex transmission apparatuses, multiplex transmission networks, and operation method thereforHITACHI LTD·Filed 2000·Granted Feb 24, 2004·20 cites·23 claims
- 1180US7978972B2Optical line terminal and optical network terminalHITACHI LTD·Filed 2007·Granted Jul 12, 2011·15 cites·10 claims
- 1280US7711268B2Passive optical network system and ranging system thereofHITACHI LTD·Filed 2008·Granted May 4, 2010·5 cites·7 claims
- 1380US6169754B1Multiplex transmission apparatuses, multiplex transmission networks, and operation method thereforHITACHI LTD·Filed 1997·Granted Jan 2, 2001·44 cites·8 claims
- 1478US8477800B2Passive optical network system and operation method thereofKAZAWA TOHRU·Filed 2010·Granted Jul 2, 2013·5 cites·9 claims
- 1577US7512341B2Passive optical network system and ranging system thereofHITACHI COMM TECH LTD·Filed 2008·Granted Mar 31, 2009·4 cites·3 claims
- 1673US6871314B2Forward error correcting code encoding equipment, forward error correcting code decoding equipment, and transmission apparatusHITACHI LTD·Filed 2002·Granted Mar 22, 2005·14 cites·8 claims
- 1772US8467684B2Apparatus of adjusting optical signal transmission timingKAZAWA TOHRU·Filed 2011·Granted Jun 18, 2013·2 cites·7 claims
- 1867US7936992B2Apparatus of adjusting optical signal transmission timingHITACHI LTD·Filed 2009·Granted May 3, 2011·2 cites·7 claims
- 1965US6411631B1Multiplex type transmitting apparatusHITACHI LTD·Filed 2000·Granted Jun 25, 2002·9 cites·2 claims
- 2063US2024364151A1Stator coreDENSO CORP·Filed 2024·Application pending·0 cites
- 2162US7372807B2Method and apparatus for multiplex transmissionHITACHI LTD·Filed 2003·Granted May 13, 2008·5 cites·4 claims
- 2260US6735735B1Forward error correcting code encoding equipment, forward error correcting code decoding equipment, and transmission apparatusHITACHI LTD·Filed 1999·Granted May 11, 2004·34 cites·12 claims
- 2360US6094440AMultiplex type transmitting apparatusHITACHI LTD·Filed 1997·Granted Jul 25, 2000·22 cites·6 claims
- 2460US5710847ASemiconductor optical functional deviceHITACHI LTD·Filed 1996·Granted Jan 20, 1998·23 cites·13 claims
- 2559US2024128808A1Stator for rotating electric machineDENSO CORP·Filed 2023·Application pending·0 cites
- 2651US8078929B2Optical line terminal and optical network terminalOHIRA MASAKI·Filed 2007·Granted Dec 13, 2011·3 cites·8 claims
- 2749US7386012B2Multiplex transmission apparatuses, multiplex transmission networks, and operation method thereforHITACHI LTD·Filed 2003·Granted Jun 10, 2008·0 cites·15 claims
- 2849US7139479B2Method and apparatus for optical network administrationHITACHI LTD·Filed 2001·Granted Nov 21, 2006·2 cites·10 claims
- 2947US8675870B2Encryption apparatusOHIRA MASAKI·Filed 2007·Granted Mar 18, 2014·0 cites·8 claims
- 3046US2002091982A1Error correction transmission apparatusHITACHI LTD·Filed 2002·Application pending·0 cites
- 3128US4860082ABipolar transistorNEC CORP·Filed 1987·Granted Aug 22, 1989·4 cites·11 claims
- 3225US4695328AMethod of making a bipolar transistorNEC CORP·Filed 1985·Granted Sep 22, 1987·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →