Inventor · disambiguated record
Manabu Oguma
Also filed as: OGUMA MANABU
20 granted patents·148 citations·filing 2001–2021
93Inventor score
Top patents by PatentIndex Score
20 records- 0187US9306670B2Optical coupling/splitting device, two-way optical propagation device, and optical-transmit-receive systemNIPPON TELEGRAPH & TELEPHONE·Filed 2012·Granted Apr 5, 2016·9 cites·15 claims
- 0287US8150219B2Waveguide-type optical interferometerNASU YUSUKE·Filed 2007·Granted Apr 3, 2012·24 cites·13 claims
- 0385US8483525B2Optical wavelength multiplexing/demultiplexing circuit, optical module using optical wavelength multiplexing/demultiplexing circuit, and communication systemKITOH TSUTOMU·Filed 2010·Granted Jul 9, 2013·10 cites·17 claims
- 0484US11982839B2Optical 90 degree hybrid circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted May 14, 2024·2 cites·9 claims
- 0582US7085438B2Optical multi/demultiplexing circuit equipped with phase generating deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2003·Granted Aug 1, 2006·25 cites·41 claims
- 0682US6606433B2Optical multi/demultiplexerNIPPON TELEGRAPH & TELEPHONE·Filed 2001·Granted Aug 12, 2003·22 cites·16 claims
- 0776US6724957B2Optical filterNIPPON TELEGRAPH & TELEPHONE·Filed 2002·Granted Apr 20, 2004·18 cites·11 claims
- 0871US6735358B2Optical multiplexer and optical demultiplexerNIPPON TELEGRAPH & TELEPHONE·Filed 2002·Granted May 11, 2004·10 cites·2 claims
- 0968US11656405B2Optical multi/demultiplexing circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted May 23, 2023·1 cites·8 claims
- 1068US7590312B2Interferometer optical switch and variable optical attenuatorNIPPON TELEGRAPH & TELEPHONE·Filed 2004·Granted Sep 15, 2009·11 cites·98 claims
- 1167US8346030B2Polarization-independent waveguide-type optical interference circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2007·Granted Jan 1, 2013·5 cites·16 claims
- 1263US9407371B2Optical multiplexer/demultiplexerNIPPON TELEGRAPH & TELEPHONE·Filed 2013·Granted Aug 2, 2016·1 cites·6 claims
- 1363US6731828B2Waveguide-type optical signal processing circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2002·Granted May 4, 2004·9 cites·8 claims
- 1459US8737779B2Optical wavelength multi/demultiplexerKITOH TSUTOMU·Filed 2010·Granted May 27, 2014·1 cites·22 claims
- 1555US11835761B2Planar optical waveguide circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Dec 5, 2023·0 cites·18 claims
- 1653US12306533B2Optical device manufacturing method and manufacturing apparatus using local etchingNTT ELECTRONICS CORP·Filed 2021·Granted May 20, 2025·0 cites·6 claims
- 1750US11982837B2Interposer circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted May 14, 2024·0 cites·7 claims
- 1849US11493776B2Polarization multiplexed optical transmitter circuit and polarization multi/demultiplexed optical transceiver circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Nov 8, 2022·0 cites·7 claims
- 1944US12107626B2Wavelength monitoring device and controlling method thereofNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Oct 1, 2024·0 cites·4 claims
- 2042US11973535B2Wavelength monitoring circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Apr 30, 2024·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →