Inventor · disambiguated record
Koji Nakazato
Also filed as: NAKAZATO KOJI
15 granted patents·2 pending applications·372 citations·filing 1991–2009
94Inventor score
Top patents by PatentIndex Score
17 records- 0189US5381503AMode field diameter conversion fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Jan 10, 1995·86 cites·24 claims
- 0284US6359727B1Optical amplifier for wavelength-multiplexing transmissionSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Mar 19, 2002·23 cites·13 claims
- 0380US6599039B1Optical transmission monitoring apparatus, optical transmission monitoring method, optical amplification system, method of controlling optical amplification system, and optical transmission systemSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Jul 29, 2003·30 cites·23 claims
- 0480US6282361B1Multi-channel variable optical attenuatorSUMITOMO ELECTRIC INDUSTRIES·Filed 1999·Granted Aug 28, 2001·60 cites·8 claims
- 0579US5532870AOptical fiber amplifier and optical amplifier repeaterSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Jul 2, 1996·32 cites·13 claims
- 0670US5572357AOptical system for amplifying signal lightSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Nov 5, 1996·35 cites·29 claims
- 0770US5253322AOptical functioning glass and fiber amplifierSUMITOMO ELECTRIC INDUSTRIES·Filed 1991·Granted Oct 12, 1993·28 cites·10 claims
- 0862US5244846AOptical functioning glass and apparatus using the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Sep 14, 1993·16 cites·6 claims
- 0960US5446820AMode field diameter conversion optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Aug 29, 1995·21 cites·12 claims
- 1054US5721635AOptical fiber amplifier and optical amplifier repeaterSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Feb 24, 1998·21 cites·7 claims
- 1153US8546722B2Laser processing apparatus and processing method employed thereinYAMADA EIICHIRO·Filed 2009·Granted Oct 1, 2013·1 cites·19 claims
- 1246US5337401AOptical functioning glass and method of manufacturing same, optical fiber, waveguide device, and laser deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 1991·Granted Aug 9, 1994·10 cites·22 claims
- 1340US8303738B2Metal heating apparatus, metal heating method, and light source apparatusYAMADA EIICHIRO·Filed 2004·Granted Nov 6, 2012·0 cites·39 claims
- 1440US2006029114A1Semiconductor laser deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Application pending·0 cites
- 1540US2008055922A1Fiber bundle and light-source equipmentSUMITOMO ELECTRIC INDUSTRIES·Filed 2007·Application pending·0 cites
- 1636US5640269AOptical fiber amplifier and optical amplifier repeaterSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Jun 17, 1997·5 cites·6 claims
- 1733US5377294AOptical functioning glass and apparatus using the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Dec 27, 1994·4 cites·14 claims
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