Inventor · disambiguated record
Hiroyoshi Matsumura
Also filed as: MATSUMURA HIROYOSHI
44 granted patents·2 pending applications·1,137 citations·filing 1971–2012
98Inventor score
Top patents by PatentIndex Score
46 records- 0195US4426129AOptical fiber and method of producing the sameHITACHI LTD·Filed 1981·Granted Jan 17, 1984·51 cites·12 claims
- 0291US7357005B2Fiber optic collimator system, fiber optic collimator array, and manufacturing method of the fiber optic collimator system and fiber optic collimator array systemTOYO GLASS CO LTD·Filed 2005·Granted Apr 15, 2008·34 cites·4 claims
- 0391US5867809AElectric appliance, printed circuit board, remained life estimation method, and system thereofHITACHI LTD·Filed 1995·Granted Feb 2, 1999·142 cites·17 claims
- 0490US7603008B2Optical fiber coupling part and manufacturing method thereofTOYO GLASS CO LTD·Filed 2005·Granted Oct 13, 2009·29 cites·1 claims
- 0589US7346237B2Optical fiber coupling partTOYO GLASS CO LTD·Filed 2004·Granted Mar 18, 2008·40 cites·8 claims
- 0686US4581579AOptical magnetic-field measuring apparatus having improved temperature characteristicsHITACHI LTD·Filed 1983·Granted Apr 8, 1986·43 cites·8 claims
- 0784US4737015AOptical waveguide having a silicon oxi-nitride layerHITACHI CABLE·Filed 1984·Granted Apr 12, 1988·42 cites·17 claims
- 0884US4604577ATemperature-compensated magnetic field measuring instrumentHITACHI LTD·Filed 1983·Granted Aug 5, 1986·39 cites·23 claims
- 0983US5340637AOptical device diffraction gratings and a photomask for use in the sameHITACHI LTD·Filed 1992·Granted Aug 23, 1994·67 cites·11 claims
- 1082US4840446APhoto semiconductor device having a multi-quantum well structureHITACHI CABLE·Filed 1987·Granted Jun 20, 1989·49 cites·10 claims
- 1181US4803692ASemiconductor laser devicesHITACHI LTD·Filed 1986·Granted Feb 7, 1989·28 cites·24 claims
- 1281US3941474ALight-conducting glass structuresNIPPON SELFOC CO LTD·Filed 1971·Granted Mar 2, 1976·44 cites·11 claims
- 1379US4813757AOptical switch including bypass waveguideHITACHI LTD·Filed 1987·Granted Mar 21, 1989·42 cites·3 claims
- 1479US4737003AOptical switching device utilizing multiple quantum well structures between intersecting waveguidesHITACHI LTD·Filed 1984·Granted Apr 12, 1988·42 cites·41 claims
- 1578US4792197AFabrication method and equipment for diffraction gratingsHITACHI LTD·Filed 1986·Granted Dec 20, 1988·39 cites·14 claims
- 1677US7343064B2Optical switch and optical add/drop multiplexerTECDIA CO LTD·Filed 2006·Granted Mar 11, 2008·7 cites·5 claims
- 1775US4631402AOptical electric-field measuring apparatusHITACHI LTD·Filed 1984·Granted Dec 23, 1986·34 cites·15 claims
- 1875US4612294AGlass material for optical fibers used in infrared regionHITACHI LTD·Filed 1984·Granted Sep 16, 1986·28 cites·11 claims
- 1974US4835581AElectron gas hole gas tunneling transistor deviceHITACHI LTD·Filed 1987·Granted May 30, 1989·30 cites·26 claims
- 2074US4693543AOptical integrated circuitHITACHI LTD·Filed 1984·Granted Sep 15, 1987·31 cites·2 claims
- 2174US4505729AMethod of producing optical fiber preformHITACHI LTD·Filed 1983·Granted Mar 19, 1985·19 cites·21 claims
- 2271US4730896AMember for infrared ray transmissionHITACHI LTD·Filed 1985·Granted Mar 15, 1988·25 cites·4 claims
- 2371US4406518ASingle-mode-transmission optical fiber and a method of manufacturing the sameHITACHI LTD·Filed 1981·Granted Sep 27, 1983·18 cites·5 claims
- 2470US7921672B2Method for manufacturing GRIN lensTOYO GLASS CO LTD·Filed 2005·Granted Apr 12, 2011·1 cites·12 claims
- 2569US4819036ASemiconductor deviceHITACHI LTD·Filed 1986·Granted Apr 4, 1989·25 cites·16 claims
- 2666US4861130AOptical modulating device utilizing polariton substanceHITACHI LTD·Filed 1987·Granted Aug 29, 1989·23 cites·22 claims
- 2764US7547532B2Three-dimensional structure of prostaglandin D synthase and utilization thereofJAPAN SCIENCE & TECH AGENCY·Filed 2002·Granted Jun 16, 2009·4 cites·1 claims
- 2863US9751068B2Target substance transfer method, crystal production method, composition production method, and target substance transfer deviceMORI YUSUKE·Filed 2012·Granted Sep 5, 2017·1 cites·10 claims
- 2960US4933728ASemiconductor optical deviceHITACHI LTD·Filed 1989·Granted Jun 12, 1990·13 cites·51 claims
- 3060US4887877AOptical devices and optical integrated circuitsHITACHI LTD·Filed 1988·Granted Dec 19, 1989·19 cites·29 claims
- 3160US4720836ADistributed feedback semiconductor laserHITACHI LTD·Filed 1985·Granted Jan 19, 1988·12 cites·6 claims
- 3257US4900134AOptical deviceHITACHI LTD·Filed 1987·Granted Feb 13, 1990·16 cites·28 claims
- 3355US4905057ASemiconductor devicesHITACHI LTD·Filed 1989·Granted Feb 27, 1990·10 cites·26 claims
- 3455US4832430AOptical switchHITACHI LTD·Filed 1987·Granted May 23, 1989·16 cites·15 claims
- 3554US7387452B2Semiconductor laser moduleTECDIA CO LTD·Filed 2007·Granted Jun 17, 2008·2 cites·4 claims
- 3653US4766092AMethod of growing heteroepitaxial InP on Si using Sn substrate implantationHITACHI LTD·Filed 1986·Granted Aug 23, 1988·18 cites·15 claims
- 3750US2009263784A1Three-dimensional structure of prostaglandin d synthase and utilization thereofURADE YOSHIHIRO·Filed 2009·Application pending·0 cites
- 3849US4828592APolarization plane maintaining optical fiber fabricating methodHITACHI LTD·Filed 1986·Granted May 9, 1989·9 cites·8 claims
- 3948US4847573AOptical modulatorHITACHI LTD·Filed 1986·Granted Jul 11, 1989·13 cites·27 claims
- 4043US4814838ASemiconductor device and method of manufacturing the sameHITACHI LTD·Filed 1987·Granted Mar 21, 1989·11 cites·9 claims
- 4142US4841536ASemiconductor laser devicesHITACHI LTD·Filed 1986·Granted Jun 20, 1989·6 cites·6 claims
- 4240US4570064AOptical D.C. electric-field measuring apparatus with optic sensing means exhibiting both electrooptic and photoelectric effectsHITACHI LTD·Filed 1983·Granted Feb 11, 1986·6 cites·16 claims
- 4338US9182216B2Method for observing protein crystalNISHIZAWA NORIHIKO·Filed 2011·Granted Nov 10, 2015·0 cites·17 claims
- 4438US4838633ASemiconductor device with high speed signal transmission arrangement utilizing lightHITACHI LTD·Filed 1986·Granted Jun 13, 1989·5 cites·24 claims
- 4538US4483617AOptical gyroscope with large propagation constant differenceHITACHI LTD·Filed 1982·Granted Nov 20, 1984·4 cites·4 claims
- 4637US2007177637A1Tunable optical filter and external-resonator-type semiconductor laser device using the sameTECDIA CO LTD·Filed 2006·Application pending·0 cites
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