Inventor · disambiguated record
Masayuki Shigematsu
Also filed as: SHIGEMATSU MASAYUKI
40 granted patents·5 pending applications·883 citations·filing 1987–2012
98Inventor score
Top patents by PatentIndex Score
45 records- 0195US4822399AGlass preform for dispersion shifted single mode optical fiber and method for the production of the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1987·Granted Apr 18, 1989·63 cites·3 claims
- 0289US6067392AOptical fiber diffraction grating, a method of fabricating thereof and a laser light sourceSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted May 23, 2000·97 cites·23 claims
- 0387US6259554B1Optical amplifier repeater systemSUMITOMO ELECTRIC INDUSTRIES·Filed 1999·Granted Jul 10, 2001·93 cites·10 claims
- 0482US6625187B1Semiconductor optical device and method of manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Sep 23, 2003·21 cites·14 claims
- 0582US5701188AChromatic dispersion compensator and chromatic dispersion compensating optical communication systemSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Dec 23, 1997·66 cites·26 claims
- 0680US6055081AChromatic dispersion compensator and chromatic dispersion compensating optical communication systemSUMITOMO ELECTRIC INDUSTRIES·Filed 1997·Granted Apr 25, 2000·56 cites·24 claims
- 0780US5680491AOptical fiber dispersion compensation device for optical communication systemSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Oct 21, 1997·45 cites·10 claims
- 0879US5532870AOptical fiber amplifier and optical amplifier repeaterSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Jul 2, 1996·32 cites·13 claims
- 0975US9244217B2Bi-directional optical communication method and multi-core optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2012·Granted Jan 26, 2016·3 cites·5 claims
- 1072US6952309B1Optical amplifier and optical amplification methodSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Oct 4, 2005·11 cites·31 claims
- 1170US5077814AOptical transmission line for use in an optical communication systemSUMITOMO ELECTRIC INDUSTRIES·Filed 1989·Granted Dec 31, 1991·28 cites·10 claims
- 1264US6504647B1Optical fiber amplifier, a method of amplifying optical signals, optical communications systemSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Jan 7, 2003·8 cites·19 claims
- 1363US5381261AOptical isolatorSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Jan 10, 1995·28 cites·1 claims
- 1463US5136670AMethod for optical switching and an optical switchSUMITOMO ELECTRIC INDUSTRIES·Filed 1991·Granted Aug 4, 1992·29 cites·24 claims
- 1562US5214728ALight communication systemSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted May 25, 1993·36 cites·15 claims
- 1661US6317538B1Optical waveguide device and optical device having long-period gratingSUMITOMO ELECTRIC INDUSTRIES·Filed 1998·Granted Nov 13, 2001·23 cites·20 claims
- 1760US7170674B2Fluorescence glass, optical wave guide for optical amplifier and optical amplifier moduleUNIV KYUSHU·Filed 2003·Granted Jan 30, 2007·4 cites·17 claims
- 1860US5430822AOptical communication system including dispersion compensating optical fibersSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Jul 4, 1995·25 cites·60 claims
- 1958US5742427AOptical fiber amplifierSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Apr 21, 1998·22 cites·22 claims
- 2058US4840482AMethod of coated fiber identification in optical transmission networkSUMITOMO ELECTRIC INDUSTRIES·Filed 1988·Granted Jun 20, 1989·21 cites·6 claims
- 2154US5835259AOptical fiber amplifierSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Nov 10, 1998·21 cites·12 claims
- 2254US5721635AOptical fiber amplifier and optical amplifier repeaterSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Feb 24, 1998·21 cites·7 claims
- 2352US6415078B1Laser light source and manufacturing method thereforSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Jul 2, 2002·16 cites·19 claims
- 2450US7330302B2Optical transmission systemSUMITOMO ELECTRIC INDUSTRIES·Filed 2003·Granted Feb 12, 2008·1 cites·13 claims
- 2549US5694239AOptical phase conjugator, optical transmission system using the same, and optical phase conjugation methodSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Dec 2, 1997·17 cites·36 claims
- 2649US5167685AMethod for manufacturing a fiber type couplerSUMITOMO ELECTRIC INDUSTRIES·Filed 1991·Granted Dec 1, 1992·14 cites·14 claims
- 2748US7139483B2Optical communication systemUNIV KEIO·Filed 2003·Granted Nov 21, 2006·4 cites·7 claims
- 2848US7027215B2Optical component, optical amplification module, and optical transmission systemSUMITOMO ELECTRIC INDUSTRIES·Filed 2003·Granted Apr 11, 2006·1 cites·10 claims
- 2948US6898002B2Optical device, optical module, optical amplifier, and optical transmission systemSUMITOMO ELECTRIC INDUSTRIES·Filed 2002·Granted May 24, 2005·2 cites·79 claims
- 3046US6512613B1WDM transmission repeater, WDM transmission system and WDM transmission methodSUMITOMO ELECTRIC INDUSTRIES·Filed 1999·Granted Jan 28, 2003·12 cites·9 claims
- 3146US4848872AOptical fiber core collatorSUMITOMO ELECTRIC INDUSTRIES·Filed 1988·Granted Jul 18, 1989·11 cites·2 claims
- 3244US5129020AWavelength selective optical fiber couplerSUMITOMO ELECTRIC INDUSTRIES·Filed 1990·Granted Jul 7, 1992·11 cites·10 claims
- 3344US2004233514A1Fluorescent glass, optical amplification waveguide and optical amplification moduleFiled 2004·Application pending·0 cites
- 3441US5214524AOptical communication systemSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted May 25, 1993·11 cites·1 claims
- 3540US2004032640A1Optical transmission system and optical amplification methodFiled 2003·Application pending·0 cites
- 3640US2003161582A1Grating device, light source unit, and optical systemSUMITOMO ELECTRIC INDUSTRIES·Filed 2003·Application pending·0 cites
- 3740US2004246566A1Optical transmission systemFiled 2004·Application pending·0 cites
- 3839US5572356AOptical amplifierSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Nov 5, 1996·8 cites·12 claims
- 3937US5184244AOptical communication system and communication methodSUMITOMO ELECTRIC INDUSTRIES·Filed 1991·Granted Feb 2, 1993·8 cites·8 claims
- 4037US5046804AMethod for manufacturing a fiber type couplerSUMITOMO ELECTRIC INDUSTRIES·Filed 1989·Granted Sep 10, 1991·6 cites·19 claims
- 4136US5640269AOptical fiber amplifier and optical amplifier repeaterSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Jun 17, 1997·5 cites·6 claims
- 4236US2004120640A1Optical filter and optical amplifier using the sameFiled 2003·Application pending·0 cites
- 4330US5509098AOptical transmission line and a method of forming thereofSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Apr 16, 1996·1 cites·17 claims
- 4428USRE35222EOptical fiber component optical coupler and method of producing thereofSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Apr 30, 1996·1 cites·17 claims
- 4528US5202947AOptical fiber component optical coupler and method of producing thereofSUMITOMO ELECTRIC INDUSTRIES·Filed 1991·Granted Apr 13, 1993·1 cites·17 claims
Join the waitlist — get patent alerts
Get an alert when Masayuki Shigematsu files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →