Inventor · disambiguated record
Katsuhiko Hirabayashi
Also filed as: HIRABAYASHI KATSUHIKO
9 granted patents·4 pending applications·413 citations·filing 1992–2020
88Inventor score
Files withNIPPON TELEGRAPH & TELEPHONE13
Top patents by PatentIndex Score
13 records- 0194US5321539ALiquid crystal Fabry-Perot etalon with glass spacerNIPPON TELEGRAPH & TELEPHONE·Filed 1992·Granted Jun 14, 1994·145 cites·44 claims
- 0286US6545739B1Tunable wavelength filter using nano-sized droplets of liquid crystal dispersed in a polymerNIPPON TELEGRAPH & TELEPHONE·Filed 1998·Granted Apr 8, 2003·104 cites·13 claims
- 0384US6766082B2Waveguide-type optical device and manufacturing method thereforNIPPON TELEGRAPH & TELEPHONE·Filed 2002·Granted Jul 20, 2004·31 cites·33 claims
- 0483US5648859ALiquid crystal microprism array, free-space optical interconnector, and optical switchNIPPON TELEGRAPH & TELEPHONE·Filed 1994·Granted Jul 15, 1997·66 cites·19 claims
- 0579US5920664ABoard-to-board and unit-to-unit optical interconnection systemNIPPON TELEGRAPH & TELEPHONE·Filed 1997·Granted Jul 6, 1999·67 cites·92 claims
- 0657US11835768B2Filling resin and optical waveguide circuit filled with filling resinNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Dec 5, 2023·0 cites·11 claims
- 0755US11988873B2End structure of a waveguideNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted May 21, 2024·0 cites·8 claims
- 0855US11960152B2Method for adjusting transmitted wavelength of signal light transmitted through optical waveguide deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Apr 16, 2024·0 cites·8 claims
- 0946US2022390670A1Optical ModuleNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Application pending·0 cites
- 1044US11269139B2Waveguide type optical interferometer circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Mar 8, 2022·0 cites·19 claims
- 1144US2023251432A1Optical ModuleNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 1244US2022075120A1Optical fiber and manufacturing method thereofNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Application pending·0 cites
- 1339US2022236482A1Optical Waveguide ChipNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →