Inventor · disambiguated record
Hisaharu Yanagawa
Also filed as: YANAGAWA HISAHARU
28 granted patents·745 citations·filing 1988–1995
97Inventor score
Top patents by PatentIndex Score
28 records- 0192US4900118AMultiple-fiber optical component and method for manufacturing of the sameFURUKAWA ELECTRIC CO LTD·Filed 1988·Granted Feb 13, 1990·111 cites·38 claims
- 0282US5297228AMethod of connecting an optical fiber to an optical waveguideFURUKAWA ELECTRIC CO LTD·Filed 1993·Granted Mar 22, 1994·62 cites·2 claims
- 0382US4886335AOptical fiber switch systemFURUKAWA ELECTRIC CO LTD·Filed 1988·Granted Dec 12, 1989·53 cites·19 claims
- 0480US4958897AThin film optical component for use in optical transmission lines and method of manufacturing the sameFURUKAWA ELECTRIC CO LTD·Filed 1989·Granted Sep 25, 1990·44 cites·10 claims
- 0579US5548675AMultifiber connector, a method of manufacturing the same, and a construction for connecting the multifiber connector to an optical deviceFURUKAWA ELECTRIC CO LTD·Filed 1994·Granted Aug 20, 1996·50 cites·37 claims
- 0675US5361382AMethod of connecting optical waveguide and optical fiberFURUKAWA ELECTRIC CO LTD·Filed 1992·Granted Nov 1, 1994·42 cites·10 claims
- 0775US5177804AWaveguide-type optical switchFURUKAWA ELECTRIC CO LTD·Filed 1992·Granted Jan 5, 1993·41 cites·8 claims
- 0873US5369718ATotal internal reflection-type optical waveguide switchFURUKAWA ELECTRIC CO LTD·Filed 1992·Granted Nov 29, 1994·38 cites·30 claims
- 0967US5301252AMode field conversion fiber componentFURUKAWA ELECTRIC CO LTD·Filed 1992·Granted Apr 5, 1994·31 cites·2 claims
- 1067US5146518AOptical directional coupler device and a method of driving sameFURUKAWA ELECTRIC CO LTD·Filed 1991·Granted Sep 8, 1992·35 cites·6 claims
- 1164US5396569AOptical line monitoring method and an apparatus permitting simultaneous line monitoring and information communicationFURUKAWA ELECTRIC CO LTD·Filed 1993·Granted Mar 7, 1995·36 cites·7 claims
- 1257US5583958AComposite optical deviceFURUKAWA ELECTRIC CO LTD·Filed 1995·Granted Dec 10, 1996·21 cites·15 claims
- 1356US5148505AOptical semiconductor waveguide switchFUKUKAWA ELECTRIC CO LTD·Filed 1991·Granted Sep 15, 1992·20 cites·14 claims
- 1454US4909590AMethod and apparatus for switching optical connectorFURUKAWA ELECTRIC CO LTD·Filed 1988·Granted Mar 20, 1990·18 cites·8 claims
- 1553US5333232AOptical fiber for connection to waveguide type optical device and method of manufacturing the sameFURUKAWA ELECTRIC CO LTD·Filed 1993·Granted Jul 26, 1994·16 cites·5 claims
- 1653US5033811AOptical switchFURUKAWA ELECTRIC CO LTD·Filed 1989·Granted Jul 23, 1991·13 cites·6 claims
- 1752US5214725AOptical coupler/splitter with a filterFURUKAWA ELECTRIC CO LTD·Filed 1992·Granted May 25, 1993·16 cites·3 claims
- 1849US5179604AWaveguide-type coupler/splitterFURUKAWA ELECTRIC CO LTD·Filed 1991·Granted Jan 12, 1993·16 cites·5 claims
- 1947US5255334ADirectional coupler type optical device and a driving method thereforFURUKAWA ELECTRIC CO LTD·Filed 1992·Granted Oct 19, 1993·16 cites·26 claims
- 2041US5291575AManufacturing method for waveguide-type optical componentsFURUKAWA ELECTRIC CO LTD·Filed 1992·Granted Mar 1, 1994·10 cites·19 claims
- 2140US5649037AOptical waveguide component and a light signal processing method using the sameFURUKAWA ELECTRIC CO LTD·Filed 1995·Granted Jul 15, 1997·9 cites·11 claims
- 2240US5378256AMethod of manufacturing silica waveguide optical componentsFURUKAWA ELECTRIC CO LTD·Filed 1993·Granted Jan 3, 1995·10 cites·6 claims
- 2337US5529595AMethod of positioning elements of an optical integrated circuitFURUKAWA ELECTRIC CO LTD·Filed 1995·Granted Jun 25, 1996·7 cites·8 claims
- 2436US5390267AOptical fiber/terminal connecting deviceFURUKAWA ELECTRIC CO LTD·Filed 1994·Granted Feb 14, 1995·6 cites·7 claims
- 2536US5321782ADirectional coupler type optical function elementFURUKAWA ELECTRIC CO LTD·Filed 1993·Granted Jun 14, 1994·7 cites·4 claims
- 2636US4868816APolling communication methodFURUKAWA ELECTRIC CO LTD·Filed 1988·Granted Sep 19, 1989·11 cites·3 claims
- 2735US5453874ASemiconductor optical component and manufacturing method thereforFURUKAWA ELECTRIC CO LTD·Filed 1992·Granted Sep 26, 1995·4 cites·7 claims
- 2830US5440656AWaveguide type optical component having optical coupling sections with different coupling efficienciesFURUKAWA ELECTRIC CO LTD·Filed 1993·Granted Aug 8, 1995·2 cites·9 claims
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