Inventor · disambiguated record
Tadashi Ichikawa
Also filed as: ICHIKAWA TADASHI
20 granted patents·3 pending applications·487 citations·filing 1986–2024
96Inventor score
Files withTOYODA CHUO KENKYUSHO KK8TOYOTA CHUO KENKYUSHO KK6HITACHI CABLE2ICHIKAWA TADASHI2NIPPON TELEGRAPH & TELEPHONE2
Top patents by PatentIndex Score
23 records- 0195US9939577B2Diffraction structure, diffraction grating, diffraction grating array, optical phased array, optical modulator, optical filter, laser sourceTOYOTA CHUO KENKYUSHO KK·Filed 2017·Granted Apr 10, 2018·34 cites·13 claims
- 0293US9817121B2Radar apparatus and method of determining sign of velocityTOYOTA CHUO KENKYUSHO KK·Filed 2014·Granted Nov 14, 2017·29 cites·1 claims
- 0384US10209603B2Switching optical antenna, switching optical antenna array, and optical scanning deviceTOYOTA CHUO KENKYUSHO KK·Filed 2017·Granted Feb 19, 2019·2 cites·5 claims
- 0482US5587785ALaser doppler velocimeterTOYODA CHUO KENKYUSHO KK·Filed 1995·Granted Dec 24, 1996·109 cites·10 claims
- 0577US7903695B2Optical fiber laser and exciting method using sameHITACHI CABLE·Filed 2008·Granted Mar 8, 2011·5 cites·5 claims
- 0676US7897987B2Light-emitting device including light-emitting diode and stacked light-emitting phosphor layersTOYODA GOSEI KK·Filed 2009·Granted Mar 1, 2011·7 cites·16 claims
- 0775US5278499AFiberoptic apparatus for measuring electromagnetic field intensity with an electro-optic sensorTOYODA CHUO KENKYUSHO KK·Filed 1991·Granted Jan 11, 1994·39 cites·20 claims
- 0875US4702239AUnderwear for menICHIKAWA TADASHI·Filed 1986·Granted Oct 27, 1987·53 cites·4 claims
- 0974US5285723APrinting apparatus for wire materialJAPAN AIRLINES CO·Filed 1991·Granted Feb 15, 1994·19 cites·19 claims
- 1072US5210407AElectric field intensity detecting device having a condenser-type antenna and a light modulatorTOYODA CHUO KENKYUSHO KK·Filed 1992·Granted May 11, 1993·34 cites·12 claims
- 1169US5907426AStabilizing device for optical modulatorTOYODA CHUO KENKYUSHO KK·Filed 1997·Granted May 25, 1999·41 cites·9 claims
- 1262US2024329247A1Laser radar deviceDENSO CORP·Filed 2024·Application pending·0 cites
- 1360US10739457B1Laser radar, and light receiving method of laser radarTOYOTA CHUO KENKYUSHO KK·Filed 2015·Granted Aug 11, 2020·1 cites·16 claims
- 1460US6973234B2Optical circuit for condensing laser beams, and light source deviceTOYOTA CHUO KENKYUSHO KK·Filed 2003·Granted Dec 6, 2005·6 cites·6 claims
- 1557US6111917AImage communication system and methodNIPPON TELEGRAPH & TELEPHONE·Filed 1997·Granted Aug 29, 2000·24 cites·45 claims
- 1657US5227715AApparatus for measuring electromagnetic field intensity using dual polarized light beamsTOYODA CHUO KENKYUSHO KK·Filed 1991·Granted Jul 13, 1993·20 cites·12 claims
- 1755US5969341AOptical integrated voltage sensor for optically measuring the magnitude of a voltageTOYODA CHUO KENKYUSHO KK·Filed 1997·Granted Oct 19, 1999·19 cites·13 claims
- 1850US6268585B1Method of forming groove by laserTOYODA CHUO KENKYUSHO KK·Filed 1998·Granted Jul 31, 2001·13 cites·6 claims
- 1949US5054099ABinary image reduction methodNIPPON TELEGRAPH & TELEPHONE·Filed 1990·Granted Oct 1, 1991·20 cites·4 claims
- 2044US2009052840A1Optical waveguide type optical coupling arrangementHITACHI CABLE·Filed 2008·Application pending·0 cites
- 2144US2018333807A1Laser processing device, three-dimensional shaping device, and laser processing methodTOYOTA CHUO KENKYUSHO KK·Filed 2017·Application pending·0 cites
- 2243USD305075SUnderwear for menICHIKAWA TADASHI·Filed 1986·Granted Dec 19, 1989·4 cites·1 claims
- 2337US5627920AOptical-optical modulatorsTOYODA CHUO KENKYUSHO KK·Filed 1995·Granted May 6, 1997·8 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →