Inventor · disambiguated record
Masataka Shirasaki
Also filed as: SHIRASAKI MASATAKA
57 granted patents·7 pending applications·1,511 citations·filing 1981–2010
99Inventor score
Files withFUJITSU LTD54SHIRASAKI MASATAKA2ARASOR CORP1LUCENT TECHNOLOGIES INC1MASSACHUSETTS INSTITUTE OF TECHNOLOGY1
Top patents by PatentIndex Score
64 records- 0196US4548478AOptical deviceFUJITSU LTD·Filed 1981·Granted Oct 22, 1985·120 cites·8 claims
- 0292US5930045AOptical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 1997·Granted Jul 27, 1999·93 cites·66 claims
- 0390US6343866B1Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2000·Granted Feb 5, 2002·30 cites·46 claims
- 0490US4712880APolarization rotation compensator and optical isolator using the sameFUJITSU LTD·Filed 1986·Granted Dec 15, 1987·71 cites·11 claims
- 0588US5701376APolarized-wave-dispersion- preventive optical fiber and its manufacturing methodFUJITSU LTD·Filed 1996·Granted Dec 23, 1997·40 cites·20 claims
- 0687US6028706AVirtually imaged phased array (VIPA) having a varying reflectivity surface to improve beam profileFUJITSU LTD·Filed 1998·Granted Feb 22, 2000·67 cites·29 claims
- 0787US4806442ASpatial phase modulating masks and production processes thereof, and processes for the formation of phase-shifted diffraction gratingsFUJITSU LTD·Filed 1986·Granted Feb 21, 1989·49 cites·25 claims
- 0887US4637027ALaser light source deviceFUJITSU LTD·Filed 1984·Granted Jan 13, 1987·32 cites·10 claims
- 0987US4609257AFaraday rotator assemblyFUJITSU LTD·Filed 1984·Granted Sep 2, 1986·57 cites·9 claims
- 1086US6296361B1Optical apparatus which uses a virtually imaged phased array to produced chromatic dispersionFUJITSU LTD·Filed 1999·Granted Oct 2, 2001·44 cites·42 claims
- 1184US5969865AOptical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 1997·Granted Oct 19, 1999·65 cites·43 claims
- 1284US5969866AVirtually imaged phased array (VIPA) having air between reflecting surfacesFUJITSU LTD·Filed 1998·Granted Oct 19, 1999·56 cites·22 claims
- 1383US5073331AModulation method for use in a semiconductor laser and an apparatus thereforFUJITSU LTD·Filed 1989·Granted Dec 17, 1991·29 cites·18 claims
- 1482US6332689B1Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2000·Granted Dec 25, 2001·16 cites·21 claims
- 1582US5999320AVirtually imaged phased array as a wavelength demultiplexerFUJITSU LTD·Filed 1996·Granted Dec 7, 1999·66 cites·57 claims
- 1681US5982539AOptical deviceFUJITSU LTD·Filed 1997·Granted Nov 9, 1999·64 cites·42 claims
- 1780US5982488ACompensator which experiences thermal expansion to compensate for changes in optical distance through a transparent materialFUJITSU LTD·Filed 1997·Granted Nov 9, 1999·53 cites·34 claims
- 1879US6481861B2Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2001·Granted Nov 19, 2002·14 cites·17 claims
- 1977US5973838AApparatus which includes a virtually imaged phased array (VIPA) in combination with a wavelength splitter to demultiplex wavelength division multiplexed (WDM) lightFUJITSU LTD·Filed 1997·Granted Oct 26, 1999·53 cites·44 claims
- 2076US5812304AFaraday rotator which generates a uniform magnetic field in a magnetic optical elementFUJITSU LTD·Filed 1996·Granted Sep 22, 1998·51 cites·52 claims
- 2174US5274495AOptical amplifierFUJITSU LTD·Filed 1991·Granted Dec 28, 1993·40 cites·18 claims
- 2273US6317526B1Optical phase controller and optical switchFUJITSU LTD·Filed 1998·Granted Nov 13, 2001·41 cites·47 claims
- 2369US4668052AOptical switch having low cross-talk for wide range of wavelengthsFUJITSU LTD·Filed 1984·Granted May 26, 1987·25 cites·24 claims
- 2468US6390633B2Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2001·Granted May 21, 2002·6 cites·13 claims
- 2565US4641926APolarizing elementFUJITSU LTD·Filed 1985·Granted Feb 10, 1987·24 cites·4 claims
- 2664US5592500ALaser deviceFUJITSU LTD·Filed 1995·Granted Jan 7, 1997·26 cites·9 claims
- 2763US6786611B2Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2002·Granted Sep 7, 2004·5 cites·11 claims
- 2863US6607278B2Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2002·Granted Aug 19, 2003·4 cites·15 claims
- 2963US6226115B1Optical circulator or switch having a birefringent wedge positioned between faraday rotatorsFUJITSU LTD·Filed 1998·Granted May 1, 2001·24 cites·33 claims
- 3061US6144494AVirtually imaged phased array (VIPA) having spacer element and optical length adjusting elementFUJITSU LTD·Filed 1998·Granted Nov 7, 2000·28 cites·99 claims
- 3161US5838849AOptical component wherein either an optical field distribution of received light or an optical field distribution of a propagation mode of a receiving waveguide has a double-hump shapeFUJITSU LTD·Filed 1997·Granted Nov 17, 1998·22 cites·38 claims
- 3261US4392722APrism polarizerFUJITSU LTD·Filed 1981·Granted Jul 12, 1983·17 cites·16 claims
- 3359US4387953AOptical waveguide device with phase matching layersFUJITSU LTD·Filed 1981·Granted Jun 14, 1983·23 cites·21 claims
- 3458US6478433B2Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2001·Granted Nov 12, 2002·3 cites·22 claims
- 3556US5276701ARing laser employing unidirectional attenuatorFUJITSU LTD·Filed 1992·Granted Jan 4, 1994·15 cites·15 claims
- 3655US6781758B2Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2003·Granted Aug 24, 2004·2 cites·15 claims
- 3755US5281804AMirror apparatus for increasing light absorption efficiency of an optical detectorFUJITSU LTD·Filed 1992·Granted Jan 25, 1994·17 cites·14 claims
- 3854US6471361B2Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2002·Granted Oct 29, 2002·2 cites·13 claims
- 3952US4747655AOptical wavelength compounding/dividing deviceFUJITSU LTD·Filed 1987·Granted May 31, 1988·14 cites·8 claims
- 4050US6717731B2Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2002·Granted Apr 6, 2004·1 cites·4 claims
- 4150US6304382B1Virtually imaged phased array (VIPA) having a varying reflectivity surface to improve beam profileFUJITSU LTD·Filed 1999·Granted Oct 16, 2001·12 cites·59 claims
- 4249US7158304B2Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2006·Granted Jan 2, 2007·0 cites·10 claims
- 4349US2005219704A1Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2005·Application pending·0 cites
- 4448US7171071B2Optical wavelength division multiplexed system using wavelength splittersFUJITSU LTD·Filed 2005·Granted Jan 30, 2007·0 cites·9 claims
- 4548US6901183B2Optical wavelength division multiplexed system using wavelength splittersFUJITSU LTD·Filed 2003·Granted May 31, 2005·0 cites·8 claims
- 4648US6169630B1Virtually imaged phased array (VIPA) having lenses arranged to provide a wide beam widthFUJITSU LTD·Filed 1998·Granted Jan 2, 2001·13 cites·85 claims
- 4748US5080486ASpectrum measuring equipment utilizing double-image polarizing elementFUJITSU LTD·Filed 1990·Granted Jan 14, 1992·18 cites·24 claims
- 4847US7075723B2Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2005·Granted Jul 11, 2006·0 cites·11 claims
- 4947US6909550B2Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2004·Granted Jun 21, 2005·0 cites·29 claims
- 5046US7193778B2Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersionFUJITSU LTD·Filed 2004·Granted Mar 20, 2007·0 cites·17 claims
Showing the top 50 of 64 patent records by PatentIndex Score.
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