Inventor · disambiguated record
Tadashi Koga
Also filed as: KOGA TADASHI
15 granted patents·1 pending application·196 citations·filing 1978–2021
91Inventor score
Top patents by PatentIndex Score
16 records- 0188US4414196AMethod of producing single crystalline, acicular α-ferric oxideSAKAI CHEMICAL INDUSTRY CO·Filed 1981·Granted Nov 8, 1983·41 cites·14 claims
- 0288US4202871AProduction of acicular ferric oxideSAKAI CHEMICAL INDUSTRY CO·Filed 1978·Granted May 13, 1980·29 cites·12 claims
- 0374US6043922AOptical receiver board, optical wavelength-tuning filter module used for optical receiver board, and actuator for optical wavelength-tuning filter moduleNEC CORP·Filed 1997·Granted Mar 28, 2000·52 cites·20 claims
- 0469US7991299B2Optical transmitter with driving voltage control and methodNEC CORP·Filed 2007·Granted Aug 2, 2011·4 cites·3 claims
- 0567US11621783B2Optical receiver and receiving methodNEC CORP·Filed 2019·Granted Apr 4, 2023·1 cites·20 claims
- 0666US5912754AMethod for transmitting WDM optical signal to be amplified by optical amplification repeaters and systems used in sameNEC CORP·Filed 1996·Granted Jun 15, 1999·37 cites·9 claims
- 0763US7860409B2Optical receiver, optical receiving apparatus using the optical receiver and optical receiving method thereofNEC CORP·Filed 2007·Granted Dec 28, 2010·2 cites·9 claims
- 0860US7212748B2Frequency detection circuit, optical receiver and optical transmission system using the sameNEC CORP·Filed 2002·Granted May 1, 2007·7 cites·10 claims
- 0959US5995254AWavelength division multiplexing light transmitting systemNEC CORP·Filed 1997·Granted Nov 30, 1999·23 cites·12 claims
- 1052US12267112B2Communication apparatus, communication system, communication method, and non-transitory computer readable mediumNEC CORP·Filed 2021·Granted Apr 1, 2025·0 cites·8 claims
- 1149US10924190B2Optical receiver and optical reception methodNEC CORP·Filed 2018·Granted Feb 16, 2021·0 cites·20 claims
- 1243US10355786B2Optical modulator, optical transmitter, and optical modulation methodNEC CORP·Filed 2016·Granted Jul 16, 2019·0 cites·16 claims
- 1342US11073706B2Transmitter and bias adjustment methodNEC CORP·Filed 2017·Granted Jul 27, 2021·0 cites·7 claims
- 1440US9654228B2Signal reception processing apparatus and method for processing received signalNEC CORP·Filed 2015·Granted May 16, 2017·0 cites·20 claims
- 1533US2008219680A1Optical receiving apparatus and balance adjustment methodOMORI KUMI·Filed 2008·Application pending·0 cites
- 1629US6369922B1Wavelength division multiplex optical transmission apparatusNEC CORP·Filed 1998·Granted Apr 9, 2002·0 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →