Inventor · disambiguated record
Hitoshi Hatayama
Also filed as: HATAYAMA HITOSHI
18 granted patents·6 pending applications·255 citations·filing 1998–2022
94Inventor score
Files withSUMITOMO ELECTRIC INDUSTRIES19SUMITOMO ELECTRIC OPTIFRONTIER CO LTD2HATAYAMA HITOSHI1YAMADA EIICHIRO1
Top patents by PatentIndex Score
24 records- 0191US6701090B1Wavelength division multiplexing signal number monitoring apparatus and methodSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Mar 2, 2004·36 cites·8 claims
- 0287US6333807B1Optical filterSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Dec 25, 2001·27 cites·8 claims
- 0385US7829335B2Method of differentiation induction to osteoblastsSUMITOMO ELECTRIC INDUSTRIES·Filed 2007·Granted Nov 9, 2010·9 cites·8 claims
- 0483US6507680B1Planar lightwave circuit moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Jan 14, 2003·28 cites·13 claims
- 0578US6169837B1Dispersion-flattened optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1998·Granted Jan 2, 2001·48 cites·20 claims
- 0676US6633698B2Optical filterSUMITOMO ELECTRIC INDUSTRIES·Filed 2001·Granted Oct 14, 2003·17 cites·5 claims
- 0776US6332055B1Optical attenuator, plane waveguide type optical circuit having the same and optical attenuation system having the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Dec 18, 2001·17 cites·6 claims
- 0874US6560381B2Optical filterSUMITOMO ELECTRIC INDUSTRIES·Filed 2001·Granted May 6, 2003·16 cites·4 claims
- 0974US6269211B1Optical plane waveguideSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Jul 31, 2001·15 cites·6 claims
- 1072US6952309B1Optical amplifier and optical amplification methodSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Oct 4, 2005·11 cites·31 claims
- 1171US6643431B2Optical device and control method thereofSUMITOMO ELECTRIC INDUSTRIES·Filed 2002·Granted Nov 4, 2003·13 cites·4 claims
- 1264US6782168B2Apparatus for and method of monitoring wavelength multiplexed signal light as well as optical transmission system using the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2002·Granted Aug 24, 2004·6 cites·14 claims
- 1356US7085446B2Optical multi/demultiplexerSUMITOMO ELECTRIC INDUSTRIES·Filed 2003·Granted Aug 1, 2006·3 cites·5 claims
- 1453US8546722B2Laser processing apparatus and processing method employed thereinYAMADA EIICHIRO·Filed 2009·Granted Oct 1, 2013·1 cites·19 claims
- 1552US6829407B2Planar optical circuit and optical transmission systemSUMITOMO ELECTRIC INDUSTRIES·Filed 2002·Granted Dec 7, 2004·3 cites·9 claims
- 1652US6819859B2Planar lightwave circuit type variable optical attenuatorSUMITOMO ELECTRIC INDUSTRIES·Filed 2002·Granted Nov 16, 2004·4 cites·5 claims
- 1752US2025093584A1Lens component, optical multiplexing/demultiplexing module, and method for manufacturing optical multiplexing/demultiplexing moduleSUMITOMO ELECTRIC OPTIFRONTIER CO LTD·Filed 2022·Application pending·0 cites
- 1851US2010068673A1Laser processing device and its processing methodSUMITOMO ELECTRIC INDUSTRIES·Filed 2008·Application pending·0 cites
- 1949US11965801B2Measurement systemSUMITOMO ELECTRIC OPTIFRONTIER CO LTD·Filed 2019·Granted Apr 23, 2024·0 cites·8 claims
- 2048US7027215B2Optical component, optical amplification module, and optical transmission systemSUMITOMO ELECTRIC INDUSTRIES·Filed 2003·Granted Apr 11, 2006·1 cites·10 claims
- 2147US2007244527A1A Treatment Apparatus And a Method of TreatmentHATAYAMA HITOSHI·Filed 2006·Application pending·0 cites
- 2244US2006257085A1Fiberoptics, fiberoptic transmission line and optical transmission systemSUMITOMO ELECTRIC INDUSTRIES·Filed 2004·Application pending·0 cites
- 2340US2008055922A1Fiber bundle and light-source equipmentSUMITOMO ELECTRIC INDUSTRIES·Filed 2007·Application pending·0 cites
- 2436US2004120640A1Optical filter and optical amplifier using the sameFiled 2003·Application pending·0 cites
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