Assignee
KOHOKU KOGYO KK
JP·13 granted patents·5 pending applications·28 citations·filing 2003–2023
Top patents by PatentIndex Score
18 records- 0189US10187175B2Optical multiplexer/demultiplexer and optical transceiverKOHOKU KOGYO KK·Filed 2017·Granted Jan 22, 2019·7 cites·19 claims
- 0275USD971162SOptical fiber cable with feedthroughKOHOKU KOGYO KK·Filed 2020·Granted Nov 29, 2022·9 cites·1 claims
- 0374US9703035B2Optical connector, method for manufacturing the same, and mold container for manufacturing the sameKOHOKU KOGYO KK·Filed 2014·Granted Jul 11, 2017·3 cites·6 claims
- 0467US10025122B2Optical deviceKOHOKU KOGYO KK·Filed 2014·Granted Jul 17, 2018·1 cites·7 claims
- 0562US2025296271A1Molded body manufacturing equipmentKOHOKU KOGYO KK·Filed 2023·Application pending·0 cites
- 0655US11067755B2Optical fiber module and method for manufacturing the sameKOHOKU KOGYO KK·Filed 2019·Granted Jul 20, 2021·0 cites·20 claims
- 0749US7266282B2Fiber array for optical communication and method of manufacturing the fiber arrayKOHOKU KOGYO KK·Filed 2003·Granted Sep 4, 2007·4 cites·3 claims
- 0848US12404201B2Preform for optical fiber and manufacturing method of optical fiberKOHOKU KOGYO KK·Filed 2021·Granted Sep 2, 2025·0 cites·13 claims
- 0948US2015086784A1Method for manufacturing optical fiber base material and optical fiber base materialKOHOKU KOGYO KK·Filed 2013·Application pending·0 cites
- 1047US2025172755A1Fan-in/fan-out deviceKOHOKU KOGYO KK·Filed 2023·Application pending·0 cites
- 1143USD879768SOptical communication moduleKOHOKU KOGYO KK·Filed 2017·Granted Mar 31, 2020·3 cites·1 claims
- 1242US11835766B2Slope gain equalizerKOHOKU KOGYO KK·Filed 2020·Granted Dec 5, 2023·0 cites·4 claims
- 1340US11137547B2Wavelength selective filterKOHOKU KOGYO KK·Filed 2020·Granted Oct 5, 2021·0 cites·12 claims
- 1438US12436340B2Optical filter deviceKOHOKU KOGYO KK·Filed 2021·Granted Oct 7, 2025·0 cites·6 claims
- 1538US11598908B2Interference filter moduleKOHOKU KOGYO KK·Filed 2018·Granted Mar 7, 2023·0 cites·7 claims
- 1638US2022283379A1Optical fiber feedthroughKOHOKU KOGYO KK·Filed 2020·Application pending·0 cites
- 1738US2024061204A1Fan-in/fan-out deviceKOHOKU KOGYO KK·Filed 2021·Application pending·0 cites
- 1834USD879767SOptical communication moduleKOHOKU KOGYO KK·Filed 2017·Granted Mar 31, 2020·1 cites·1 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →