Inventor · disambiguated record
Risato Ohhira
Also filed as: OHHIRA RISATO
10 granted patents·4 pending applications·45 citations·filing 2000–2012
85Inventor score
Top patents by PatentIndex Score
14 records- 0174US7046414B2Optical modulation system applying a highly stable bias voltage to an optical modulatorNEC CORP·Filed 2002·Granted May 16, 2006·18 cites·40 claims
- 0266US6882802B2Modulator and method of modulating optical carrier with clock signal before or after the carrier is modulated with data pulseNEC CORP·Filed 2001·Granted Apr 19, 2005·10 cites·37 claims
- 0366US6728490B1Optical transmitter, optical receiver, optical transmission system, and optical transmission methodNEC CORP·Filed 2000·Granted Apr 27, 2004·10 cites·13 claims
- 0462US8604891B2High frequency substrate including a signal line breaking portion coupled by a capacitorOHHIRA RISATO·Filed 2009·Granted Dec 10, 2013·3 cites·7 claims
- 0555US8154364B2High-frequency transmission line having ground surface patterns with a plurality of notches thereinOHHIRA RISATO·Filed 2007·Granted Apr 10, 2012·2 cites·8 claims
- 0649US8680954B2Waveguide, waveguide connection structure and waveguide connection methodWAKABAYASHI YOSHIAKI·Filed 2009·Granted Mar 25, 2014·1 cites·7 claims
- 0748US2011226518A1Substrate of circuit module and manufacturing method thereforOHHIRA RISATO·Filed 2009·Application pending·0 cites
- 0847US7302191B2Optical transmitter with tap type optical filtersNEC CORP·Filed 2003·Granted Nov 27, 2007·1 cites·56 claims
- 0943US9019035B2High frequency wiring board comprised of interconnected first and second coplanar lines on different layers and having a ground pattern physically separated therefromOHHIRA RISATO·Filed 2008·Granted Apr 28, 2015·0 cites·12 claims
- 1043US2015005972A1Electric power system tree display system and electric power system tree display methodNEC CORP·Filed 2012·Application pending·0 cites
- 1142US2010254094A1High-Frequency Wiring Board and High-Frequency Module That Uses the High-Frequency Wiring BoardOHHIRA RISATO·Filed 2008·Application pending·0 cites
- 1239US8941402B2Electromagnetic field measuring apparatus, electromagnetic field measuring method used for the same, and non-transitory computer readable medium storing electromagnetic field measurement control programIWANAMI MIZUKI·Filed 2010·Granted Jan 27, 2015·0 cites·26 claims
- 1339US8654331B2Electromagnetic field measurement apparatusIWANAMI MIZUKI·Filed 2009·Granted Feb 18, 2014·0 cites·19 claims
- 1433US2012326812A1High-frequency transmission line and circuit substrateOHHIRA RISATO·Filed 2011·Application pending·0 cites
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