Manabu Oguma
20Patents
6h-index
38Co-inventors
69Inventor score
Filing activity: Jun 27, 2001 → Feb 2, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8150219B2 | Waveguide-type optical interferometer | Physics | 17 | Active |
| US7085438B2 | Optical multi/demultiplexing circuit equipped with phase generating device | Physics | 13 | Expired |
| US6606433B2 | Optical multi/demultiplexer | Physics | 11 | Expired |
| US7590312B2 | Interferometer optical switch and variable optical attenuator | Physics | 7 | Expired |
| US6724957B2 | Optical filter | Physics | 7 | Expired |
| US6731828B2 | Waveguide-type optical signal processing circuit | Physics | 6 | Expired |
| US8483525B2 | Optical wavelength multiplexing/demultiplexing circuit, optical module using optical wavelength multiplexing/demultiplexing circuit, and communication system | Physics | 5 | Active |
| US6735358B2 | Optical multiplexer and optical demultiplexer | Physics | 4 | Expired |
| US9306670B2 | Optical coupling/splitting device, two-way optical propagation device, and optical-transmit-receive system | Electricity | 4 | Active |
| US8346030B2 | Polarization-independent waveguide-type optical interference circuit | Physics | 2 | Active |
| US11982839B2 | Optical 90 degree hybrid circuit | Electricity | 1 | Active |
| US11493776B2 | Polarization multiplexed optical transmitter circuit and polarization multi/demultiplexed optical transceiver circuit | Electricity | 0 | Active |
| US11973535B2 | Wavelength monitoring circuit | Physics | 0 | Active |
| US12306533B2 | Optical device manufacturing method and manufacturing apparatus using local etching | Physics | 0 | Active |
| US8737779B2 | Optical wavelength multi/demultiplexer | Physics | 0 | Active |
| US9407371B2 | Optical multiplexer/demultiplexer | Electricity | 0 | Active |
| US11982837B2 | Interposer circuit | Physics | 0 | Active |
| US12107626B2 | Wavelength monitoring device and controlling method thereof | Electricity | 0 | Active |
| US11656405B2 | Optical multi/demultiplexing circuit | Physics | 0 | Active |
| US11835761B2 | Planar optical waveguide circuit | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.