Inventor · disambiguated record
Tadashi Fukuzawa
Also filed as: FUKUZAWA TADASHI · TANIMIZU SHINKICHI
39 granted patents·896 citations·filing 1974–2008
98Inventor score
Top patents by PatentIndex Score
39 records- 0194US6295106B1Energy-efficient full-color liquid crystal displayIBM·Filed 2000·Granted Sep 25, 2001·71 cites·6 claims
- 0292US7489840B2Optical link module, optical interconnection method, information processor including the optical link module, signal transfer method, prism and method of manufacturing the prismIBM·Filed 2005·Granted Feb 10, 2009·23 cites·1 claims
- 0391US7373044B2Optical link module, optical interconnection method, information processor including the optical link module, signal transfer method, prism and method of manufacturing the prismIBM·Filed 2005·Granted May 13, 2008·19 cites·3 claims
- 0489US7903911B2Optical link module, optical interconnection method, information processor including the optical link module, signal transfer method, prism and method of manufacturing the prismIBM·Filed 2008·Granted Mar 8, 2011·14 cites·8 claims
- 0589US5287377ACoupled quantum well tunable laserIBM·Filed 1993·Granted Feb 15, 1994·67 cites·16 claims
- 0687US6947671B2Optical link module, optical interconnection method, information processor including the optical link module, signal transfer method, prism and method of manufacturing the prismIBM·Filed 2004·Granted Sep 20, 2005·25 cites·8 claims
- 0787US5001536ASemiconductor deviceHITACHI LTD·Filed 1989·Granted Mar 19, 1991·60 cites·30 claims
- 0885US7212713B2Optical transmission substrate, method for manufacturing optical transmission substrate and optoelectronic integrated circuitIBM·Filed 2004·Granted May 1, 2007·27 cites·15 claims
- 0980US4775980ADistributed-feedback semiconductor laser deviceHITACHI LTD·Filed 1985·Granted Oct 4, 1988·28 cites·11 claims
- 1078US4957337AOptical quantum interference device and method of modulating light using sameHITACHI LTD·Filed 1989·Granted Sep 18, 1990·30 cites·31 claims
- 1177US6249328B1Liquid crystal display device having red, green, and blue fluorescent lamps having a particular phosphor composition or a double tube lampIBM·Filed 1998·Granted Jun 19, 2001·67 cites·14 claims
- 1274US5091980AOptical quantum interference device/optical computer and method of modulating light using sameHITACHI LTD·Filed 1990·Granted Feb 25, 1992·29 cites·14 claims
- 1373US5281543AFabrication method for quantum devices in compound semiconductor layersIBM·Filed 1992·Granted Jan 25, 1994·46 cites·35 claims
- 1473US4881235ASemiconductor laser having a multiple quantum well structure doped with impuritiesHITACHI LTD·Filed 1987·Granted Nov 14, 1989·21 cites·40 claims
- 1571US5638207AFlare-prevention optical system, flare-prevention method, and flying height testerIBM·Filed 1995·Granted Jun 10, 1997·27 cites·4 claims
- 1671US4835578ASemiconductor device having a quantum wire and a method of producing the sameHITACHI LTD·Filed 1987·Granted May 30, 1989·26 cites·7 claims
- 1770US4361887ASemiconductor light emitting elementHITACHI LTD·Filed 1980·Granted Nov 30, 1982·18 cites·9 claims
- 1869US4827483ASemiconductor laser device and method of fabricating the sameHITACHI LTD·Filed 1986·Granted May 2, 1989·19 cites·28 claims
- 1968US4881238ASemiconductor laser having quantum well active region doped with impuritiesHITACHI LTD·Filed 1986·Granted Nov 14, 1989·17 cites·51 claims
- 2067US7421858B2Optical transmission substrate, method for manufacturing optical transmission substrate and optoelectronic integrated circuitIBM·Filed 2007·Granted Sep 9, 2008·3 cites·25 claims
- 2167US4784451AWaveguide optical switchesHITACHI LTD·Filed 1985·Granted Nov 15, 1988·27 cites·8 claims
- 2266US4861130AOptical modulating device utilizing polariton substanceHITACHI LTD·Filed 1987·Granted Aug 29, 1989·23 cites·22 claims
- 2366US4748132AMicro fabrication process for semiconductor structure using coherent electron beamsHITACHI LTD·Filed 1986·Granted May 31, 1988·31 cites·26 claims
- 2465US4366567ASemiconductor laser deviceHITACHI LTD·Filed 1980·Granted Dec 28, 1982·14 cites·11 claims
- 2564US4041319ARadiographic phosphor screenHITACHI LTD·Filed 1976·Granted Aug 9, 1977·13 cites·22 claims
- 2662US5475488AHead flying height measuring apparatusIBM·Filed 1993·Granted Dec 12, 1995·16 cites·11 claims
- 2762US4107571ALight emitting device having luminescent screen with self activated blue light emitting phosphorHITACHI LTD·Filed 1974·Granted Aug 15, 1978·9 cites·17 claims
- 2861US4752934AMulti quantum well laser with parallel injectionHITACHI LTD·Filed 1986·Granted Jun 21, 1988·13 cites·28 claims
- 2960US4933728ASemiconductor optical deviceHITACHI LTD·Filed 1989·Granted Jun 12, 1990·13 cites·51 claims
- 3060US4720836ADistributed feedback semiconductor laserHITACHI LTD·Filed 1985·Granted Jan 19, 1988·12 cites·6 claims
- 3153US5502565AMethod and apparatus for measuring the flying height of a magnetic head above a disk surface at three wavelengthsIBM·Filed 1994·Granted Mar 26, 1996·17 cites·6 claims
- 3249US5170226AFabrication of quantum devices in compound semiconductor layers and resulting structuresIBM·Filed 1991·Granted Dec 8, 1992·17 cites·16 claims
- 3348US4847573AOptical modulatorHITACHI LTD·Filed 1986·Granted Jul 11, 1989·13 cites·27 claims
- 3445US5547705ANonlinear optical device and method of manufacturing sameIBM·Filed 1992·Granted Aug 20, 1996·12 cites·16 claims
- 3545US4430741ASemiconductor laser deviceHITACHI LTD·Filed 1981·Granted Feb 7, 1984·7 cites·5 claims
- 3644US4171501ALight emitting devices based on the excitation of phosphor screensHITACHI LTD·Filed 1977·Granted Oct 16, 1979·8 cites·14 claims
- 3741US4783425AFabrication process of semiconductor lasersHITACHI LTD·Filed 1986·Granted Nov 8, 1988·7 cites·26 claims
- 3836US4772925AHigh speed switching field effect transistorHITACHI LTD·Filed 1986·Granted Sep 20, 1988·5 cites·5 claims
- 3930US5157543AOptical beam deflectorIBM·Filed 1990·Granted Oct 20, 1992·2 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →