Inventor · disambiguated record
Takahiro Numai
Also filed as: NUMAI TAKAHIRO
27 granted patents·1 pending application·342 citations·filing 1988–2003
97Inventor score
Top patents by PatentIndex Score
28 records- 0189US6501776B1Temperature-insensitive semiconductor laserCANON KK·Filed 2000·Granted Dec 31, 2002·28 cites·11 claims
- 0283US6656759B1Method of producing semiconductor element, semiconductor element, and gyroscopeCANON KK·Filed 2000·Granted Dec 2, 2003·21 cites·11 claims
- 0381US6566155B1Method of manufacturing semiconductor device and gyroCANON KK·Filed 2000·Granted May 20, 2003·34 cites·12 claims
- 0475US6334014B1Optical fiber apparatus provided with demultiplexing/multiplexing unit on fiber's end portion, optical detecting apparatus provided with demultiplexing/multiplexing unit on its light receiving surface, and optical transmission system using the sameCANON KK·Filed 1999·Granted Dec 25, 2001·41 cites·48 claims
- 0574US4899361AOptical filter deviceNEC CORP·Filed 1988·Granted Feb 6, 1990·20 cites·4 claims
- 0666US6559949B1Gyro apparatus and gyroscope with multiple interfering laser beams affecting an electrical signal flowing therethroughCANON KK·Filed 2000·Granted May 6, 2003·19 cites·40 claims
- 0765US6665330B1Semiconductor device having a semiconductor ring laser with a circularly formed ridge optical waveguideCANON KK·Filed 2000·Granted Dec 16, 2003·7 cites·11 claims
- 0863US6603113B2Gyro comprising a ring laser in which beams of different oscillation frequencies coexist and propagate in mutually opposite circulation directions, driving method of gyro, and signal detecting methodCANON KK·Filed 2001·Granted Aug 5, 2003·15 cites·15 claims
- 0961US5404240AOptical switching system for optical wavelength-division and time-division multiplexed signalsNEC CORP·Filed 1992·Granted Apr 4, 1995·29 cites·3 claims
- 1055US6586725B2Optical gyro, driving method and signal processing method thereforCANON KK·Filed 2001·Granted Jul 1, 2003·9 cites·30 claims
- 1152US6833549B2Radiation detector, radiation imaging system, radiation detecting method and radiation imaging methodCANON KK·Filed 2002·Granted Dec 21, 2004·4 cites·13 claims
- 1252US6275296B1Semiconductor laser gyro with modulated driving power sourceCANON KK·Filed 1999·Granted Aug 14, 2001·19 cites·26 claims
- 1351US6304329B1Gyro and semiconductor device having a plurality of laser diodesCANON KK·Filed 1999·Granted Oct 16, 2001·18 cites·27 claims
- 1451US4976513ATunable wavelength filterNEC CORP·Filed 1988·Granted Dec 11, 1990·8 cites·3 claims
- 1550US6741354B2Laser device having an optical waveguide for discerning movement of an optical gyroscope and an optical gyroscope utilizing sameCANON KK·Filed 2000·Granted May 25, 2004·6 cites·56 claims
- 1650US6658039B2Ring laser and method for driving a ring laserCANON KK·Filed 2001·Granted Dec 2, 2003·6 cites·22 claims
- 1750US6351311B1Ring laser gyro with an injected third beamCANON KK·Filed 2000·Granted Feb 26, 2002·6 cites·26 claims
- 1849US6448552B1GyroCANON KK·Filed 2000·Granted Sep 10, 2002·5 cites·9 claims
- 1948US6785003B2Ring laser gyro with optically independent semiconductor ring lasersCANON KK·Filed 2001·Granted Aug 31, 2004·5 cites·19 claims
- 2048US6631002B1Control of laser beams in a ring laser gyroCANON KK·Filed 2000·Granted Oct 7, 2003·5 cites·8 claims
- 2147US6639680B1Ring laser gyro and driving method therefor with improved driving currentCANON KK·Filed 2000·Granted Oct 28, 2003·4 cites·24 claims
- 2247US5469458ASurface-emitting semiconductor deviceNEC CORP·Filed 1993·Granted Nov 21, 1995·10 cites·16 claims
- 2340US6493089B2Gyro and method of operating the same with a modulated frequency signalCANON KK·Filed 1999·Granted Dec 10, 2002·10 cites·17 claims
- 2438US2003155517A1Radiation detecting element, radiation image pickup apparatus and radiation detecting methodCANON KK·Filed 2003·Application pending·0 cites
- 2534US6297883B1Ring laser gas gyro with beat signal detection from current, voltage, or impedance of the ring laserCANON KK·Filed 1999·Granted Oct 2, 2001·5 cites·10 claims
- 2633US5084897AOptical filter deviceNEC CORP·Filed 1989·Granted Jan 28, 1992·2 cites·4 claims
- 2732US6445454B1Gyro having modulated frequency driven laserCANON KK·Filed 1999·Granted Sep 3, 2002·3 cites·10 claims
- 2831US5153758ADriving method and apparatus for a pnpn semiconductor deviceNEC CORP·Filed 1991·Granted Oct 6, 1992·3 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →