Inventor · disambiguated record
Masafumi Nogawa
Also filed as: NOGAWA MASAFUMI
17 granted patents·161 citations·filing 1998–2018
92Inventor score
Top patents by PatentIndex Score
17 records- 0183US6389819B1Pulse tube refrigeratorAISIN SEIKI·Filed 2000·Granted May 21, 2002·35 cites·19 claims
- 0273US10243664B2Optical modulator driver circuit and optical transmitterNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Mar 26, 2019·5 cites·13 claims
- 0371US6351954B1Pulse tube refrigeratorAISIN SEIKI·Filed 2000·Granted Mar 5, 2002·19 cites·15 claims
- 0471US6094921APulse tube refrigeratorAISIN SEIKI·Filed 1998·Granted Aug 1, 2000·34 cites·12 claims
- 0569US9160458B2Optical signal detection circuit and optical receiverKOIZUMI HIROSHI·Filed 2012·Granted Oct 13, 2015·3 cites·13 claims
- 0658US6308520B1Multi-type pulse-tube refrigerating systemAISIN SEIKI·Filed 1999·Granted Oct 30, 2001·23 cites·5 claims
- 0756US6393845B1Pulse tube refrigeratorAISIN SEIKI·Filed 2000·Granted May 28, 2002·8 cites·12 claims
- 0852US7368954B2Phase comparison circuit and CDR circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2004·Granted May 6, 2008·8 cites·2 claims
- 0951US6301902B1Pulse tube refrigeratorAISIN SEIKI·Filed 2000·Granted Oct 16, 2001·6 cites·11 claims
- 1050US9853618B2Transimpedance amplifier circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Dec 26, 2017·0 cites·12 claims
- 1149US10637207B2Directly modulated laser drive circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2017·Granted Apr 28, 2020·0 cites·8 claims
- 1246US10804857B2AmplifierNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted Oct 13, 2020·0 cites·18 claims
- 1342US10892716B2AmplifierNIPPON TELEGRAPH & TELEPHONE·Filed 2016·Granted Jan 12, 2021·0 cites·14 claims
- 1442US6279324B1Heat-regenerating type cryogenic cooling apparatusAISIN SEIKI·Filed 1999·Granted Aug 28, 2001·11 cites·12 claims
- 1538US9025970B2Optical signal cutoff detection circuit and optical receiverKOIZUMI HIROSHI·Filed 2011·Granted May 5, 2015·0 cites·10 claims
- 1638US6196006B1Pulse tube refrigeratorAISIN SEIKI·Filed 1999·Granted Mar 6, 2001·9 cites·25 claims
- 1733US10666212B2Driver circuit and optical transmitterNIPPON TELEGRAPH & TELEPHONE·Filed 2017·Granted May 26, 2020·0 cites·20 claims
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