Inventor · disambiguated record
Nobuaki Mitamura
Also filed as: MITAMURA NOBUAKI
72 granted patents·14 pending applications·1,022 citations·filing 1990–2024
99Inventor score
Files withNSK LTD28FUJITSU LTD21SHINETSU HANDOTAI KK13FUJITSU OPTICAL COMPONENTS LTD11OLYMPUS OPTICAL CO4
Top patents by PatentIndex Score
86 records- 0197US11442298B2Optical modulation device and method for manufacturing optical modulation deviceFUJITSU OPTICAL COMPONENTS LTD·Filed 2020·Granted Sep 13, 2022·5 cites·7 claims
- 0295US7304798B2Spectroscopic apparatusFUJITSU LTD·Filed 2004·Granted Dec 4, 2007·133 cites·21 claims
- 0395US5427457ARolling bearingNSK LTD·Filed 1993·Granted Jun 27, 1995·51 cites·8 claims
- 0493US12242143B2Optical device and optical communication apparatusFUJITSU OPTICAL COMPONENTS LTD·Filed 2022·Granted Mar 4, 2025·2 cites·19 claims
- 0593US12153294B2Optical device having dual waveguides with one being an electro-optic crystal waveguideFUJITSU OPTICAL COMPONENTS LTD·Filed 2022·Granted Nov 26, 2024·2 cites·10 claims
- 0693US5413643ARolling bearingNSK LTD·Filed 1994·Granted May 9, 1995·64 cites·5 claims
- 0792US5338377ABall-and-roller bearingNSK LTD·Filed 1992·Granted Aug 16, 1994·92 cites·4 claims
- 0889US8088230B2Rolling apparatusUEDA KOJI·Filed 2007·Granted Jan 3, 2012·8 cites·5 claims
- 0989US6646805B2Apparatus for variable wavelength dispersion and wavelength dispersion slopeFUJITSU LTD·Filed 2001·Granted Nov 11, 2003·47 cites·20 claims
- 1088US5084116ARolling contact element steel and rolling bearing made thereofNIPPON SEIKO KK·Filed 1990·Granted Jan 28, 1992·39 cites·4 claims
- 1186US11709384B2Multilayer film, optical device, photonic integrated circuit device, and optical transceiverFUJITSU OPTICAL COMPONENTS LTD·Filed 2021·Granted Jul 25, 2023·1 cites·10 claims
- 1285US7340126B2Wavelength selective optical switchFUJITSU LTD·Filed 2005·Granted Mar 4, 2008·14 cites·20 claims
- 1384US5085733ARolling steel bearingNIPPON SEIKO KK·Filed 1990·Granted Feb 4, 1992·59 cites·4 claims
- 1484US5030017ARolling bearingNIPPON SEIKO KK·Filed 1990·Granted Jul 9, 1991·41 cites·18 claims
- 1583US7438479B2Optical receptacle, optical sub assembly and optical transceiverFUJITSU LTD·Filed 2007·Granted Oct 21, 2008·11 cites·16 claims
- 1677US6066068AToroidal type continuously variable transmissionNSK LTD·Filed 1998·Granted May 23, 2000·28 cites·3 claims
- 1776US5672014ARolling bearingsNSK LTD·Filed 1995·Granted Sep 30, 1997·51 cites·6 claims
- 1875US5855531AComponent parts of a toroidal-type continuously variable transmission having improved lifeNSK LTD·Filed 1996·Granted Jan 5, 1999·19 cites·12 claims
- 1973US7226507B2Method for producing single crystal and single crystalSHINETSU HANDOTAI KK·Filed 2004·Granted Jun 5, 2007·9 cites·9 claims
- 2073US5660647ARolling bearing with improved wear resistanceNSK LTD·Filed 1995·Granted Aug 26, 1997·26 cites·1 claims
- 2173US5626974ARolling bearing for use under high temperature conditionsNSK LTD·Filed 1995·Granted May 6, 1997·26 cites·1 claims
- 2271US6829053B1Airgap type etalon and apparatus utilizing the sameFUJITSU LTD·Filed 2000·Granted Dec 7, 2004·14 cites·12 claims
- 2370US5958155AProcess for producing thin filmOLYMPUS OPTICAL CO·Filed 1996·Granted Sep 28, 1999·23 cites·11 claims
- 2469US6931165B2Variable polarization plane rotator and optical device using sameFUJITSU LTD·Filed 2004·Granted Aug 16, 2005·10 cites·14 claims
- 2568US6923576B2Rolling bearing and belt continuously variable transmissionNSK LTD·Filed 2003·Granted Aug 2, 2005·6 cites·10 claims
- 2667US6332714B1Induction-hardened rolling bearing deviceNSK LTD·Filed 1999·Granted Dec 25, 2001·22 cites·9 claims
- 2765US12510714B2Optical integrated circuit module and optical communication apparatusFUJITSU OPTICAL COMPONENTS LTD·Filed 2023·Granted Dec 30, 2025·0 cites·11 claims
- 2865US7294196B2Silicon single crystal wafer, an epitaxial wafer and a method for producing a silicon single crystalSHINETSU HANDOTAI KK·Filed 2003·Granted Nov 13, 2007·9 cites·16 claims
- 2965US6826318B2Variable polarization plane rotator and optical device using sameFUJITSU LTD·Filed 2002·Granted Nov 30, 2004·8 cites·13 claims
- 3064USRE48336ERolling apparatusNSK LTD·Filed 2007·Granted Dec 1, 2020·2 cites·5 claims
- 3162US6807008B2Wavelength dispersion generation apparatus, multi-faced mirror used for wavelength dispersion generation apparatus, and method for manufacturing thereofFUJITSU LTD·Filed 2003·Granted Oct 19, 2004·7 cites·26 claims
- 3261US9476142B2Method for manufacturing silicon single crystalSHINETSU HANDOTAI KK·Filed 2012·Granted Oct 25, 2016·0 cites·8 claims
- 3361US7323048B2Method for producing a single crystal and a single crystalSHINETSU HANDOTAI KK·Filed 2004·Granted Jan 29, 2008·4 cites·40 claims
- 3461US2025147377A1Optical modulator element, optical transmitter, and optical transceiverFUJITSU OPTICAL COMPONENTS LTD·Filed 2024·Application pending·0 cites
- 3560US7712972B2Optical receptacleFUJITSU LTD·Filed 2007·Granted May 11, 2010·2 cites·10 claims
- 3660US7179330B2Method of manufacturing silicon single crystal, silicon single crystal and silicon waferSHINETSU HANDOTAI KK·Filed 2003·Granted Feb 20, 2007·4 cites·4 claims
- 3760US6152605ABall bearingNSK LTD·Filed 1999·Granted Nov 28, 2000·17 cites·9 claims
- 3859US7129123B2SOI wafer and a method for producing an SOI waferSHINETSU HANDOTAI KK·Filed 2003·Granted Oct 31, 2006·8 cites·13 claims
- 3959US6909537B2Dispersion compensator whose transmission band is flattenedFUJITSU LTD·Filed 2003·Granted Jun 21, 2005·6 cites·14 claims
- 4059US2025035967A1Optical modulator, optical transmitter-receiver, and optical transceiverFUJITSU OPTICAL COMPONENTS LTD·Filed 2024·Application pending·0 cites
- 4158US6900940B2Optical apparatus and deviceFUJITSU LTD·Filed 2002·Granted May 31, 2005·6 cites·18 claims
- 4258US2024264506A1Optical device, optical transceiving device, and optical transceiverFUJITSU OPTICAL COMPONENTS LTD·Filed 2023·Application pending·0 cites
- 4357US12454767B2Single crystal manufacturing apparatusSHIN ETSU HANDOTAI CO LTD·Filed 2021·Granted Oct 28, 2025·0 cites·11 claims
- 4456US6328669B1Toroidal type continuously variable transmissionNSK LTD·Filed 1999·Granted Dec 11, 2001·12 cites·13 claims
- 4556US2024272512A1Optical device, optical module, and optical transceiverFUJITSU OPTICAL COMPONENTS LTD·Filed 2024·Application pending·0 cites
- 4655US6171414B1Rolling bearingNSK LTD·Filed 1998·Granted Jan 9, 2001·15 cites·1 claims
- 4754US8593138B2Bearing residual life prediction method, bearing residual life diagnostic apparatus and bearing diagnostic systemNOMURA TSUYOSHI·Filed 2010·Granted Nov 26, 2013·1 cites·7 claims
- 4854US7326395B2Method for producing a single crystal and silicon single crystal waferSHINETSU HANDOTAI KK·Filed 2004·Granted Feb 5, 2008·2 cites·9 claims
- 4954US7016096B2Transmission wavelength characteristics variable optical element, and wavelength characteristics variable apparatus, optical amplifier, and optical transmission system, using sameFUJITSU LTD·Filed 2003·Granted Mar 21, 2006·4 cites·26 claims
- 5052US5853660ARolling bearing made of improved bearing steelNSK LTD·Filed 1995·Granted Dec 29, 1998·10 cites·2 claims
Showing the top 50 of 86 patent records by PatentIndex Score.
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