Inventor · disambiguated record
Tamotsu Akashi
Also filed as: AKASHI TAMOTSU
37 granted patents·6 pending applications·507 citations·filing 1980–2024
97Inventor score
Files withFUJITSU LTD29FUJITSU OPTICAL COMPONENTS LTD9AOTA HIROFUMI2NIPPON OILS & FATS CO LTD2NEW MEXICO TECH RES FOUND1
Top patents by PatentIndex Score
43 records- 0195US4394170AComposite sintered compact containing high density boron nitride and a method of producing the sameNIPPON OILS & FATS CO LTD·Filed 1980·Granted Jul 19, 1983·111 cites·2 claims
- 0291US7330617B2Wavelength selective optical switch, and optical device provided with spectroscopic functionFUJITSU LTD·Filed 2005·Granted Feb 12, 2008·30 cites·23 claims
- 0387US5619601AOptical switch and optical distributor using polarization control and partial reflectionFUJITSU LTD·Filed 1994·Granted Apr 8, 1997·89 cites·21 claims
- 0487US4695321ADynamic compaction of composite materials containing diamondNEW MEXICO TECH RES FOUND·Filed 1986·Granted Sep 22, 1987·43 cites·14 claims
- 0586US9450680B2Optical communication system, optical transmitter, and optical receiverFUJITSU OPTICAL COMPONENTS LTD·Filed 2014·Granted Sep 20, 2016·7 cites·9 claims
- 0683US11387910B2Optical module, transmission device, and operating point control methodFUJITSU OPTICAL COMPONENTS LTD·Filed 2020·Granted Jul 12, 2022·1 cites·6 claims
- 0782US6429976B1Optical switch using tilt mirrorsFUJITSU LTD·Filed 2001·Granted Aug 6, 2002·25 cites·11 claims
- 0881US7447399B2Optical switch, and apparatus and method for controlling optical switchFUJITSU LTD·Filed 2005·Granted Nov 4, 2008·11 cites·20 claims
- 0979US7636503B2Wavelength selective switchFUJITSU LTD·Filed 2008·Granted Dec 22, 2009·9 cites·8 claims
- 1077US9344199B2Optical receiver and light receiving methodFUJITSU OPTICAL COMPONENTS LTD·Filed 2014·Granted May 17, 2016·4 cites·5 claims
- 1177US7424183B2Collimator array and method for manufacturing the sameFUJITSU LTD·Filed 2005·Granted Sep 9, 2008·8 cites·22 claims
- 1277US6771426B2Input-output optical system of spatially optical coupled type, and optical switchFUJITSU LTD·Filed 2003·Granted Aug 3, 2004·19 cites·19 claims
- 1376US8165470B2Wavelength selecting switchAOTA HIROFUMI·Filed 2009·Granted Apr 24, 2012·5 cites·13 claims
- 1476US7340128B2Wavelength selection deviceFUJITSU LTD·Filed 2006·Granted Mar 4, 2008·8 cites·8 claims
- 1573US9063355B2Optical modulation device and control method in optical modulation deviceFUJITSU OPTICAL COMPONENTS LTD·Filed 2012·Granted Jun 23, 2015·3 cites·8 claims
- 1673US6178212B1Retiming circuit and method for performing retimingFUJITSU LTD·Filed 1998·Granted Jan 23, 2001·83 cites·16 claims
- 1768US9130680B2Optical transmitter and modulated optical signal generating methodFUJITSU LTD·Filed 2013·Granted Sep 8, 2015·2 cites·15 claims
- 1868US7263254B2Optical switch and control method thereforFUJITSU LTD·Filed 2005·Granted Aug 28, 2007·4 cites·21 claims
- 1968US6671074B2Optical receiver for burst transmission systemFUJITSU LTD·Filed 2002·Granted Dec 30, 2003·12 cites·13 claims
- 2067US7302133B2Optical switchFUJITSU LTD·Filed 2007·Granted Nov 27, 2007·3 cites·3 claims
- 2164US7982957B2Optical apparatus using a lens arrayFUJITSU LTD·Filed 2007·Granted Jul 19, 2011·3 cites·9 claims
- 2263US9450677B2Optical transmitter and control apparatus of optical modulatorFUJITSU OPTICAL COMPONENTS LTD·Filed 2014·Granted Sep 20, 2016·1 cites·13 claims
- 2363US7466915B2Mirror controller for optical switchFUJITSU LTD·Filed 2005·Granted Dec 16, 2008·2 cites·8 claims
- 2461US12197101B2Optical waveguide device and optical modulatorFUJITSU OPTICAL COMPONENTS LTD·Filed 2022·Granted Jan 14, 2025·0 cites·9 claims
- 2560US7580599B2Optical switch and MEMS packageFUJITSU LTD·Filed 2008·Granted Aug 25, 2009·2 cites·9 claims
- 2659US6901222B2Optical transmission system and terminal device applicable to the systemFUJITSU LTD·Filed 2001·Granted May 31, 2005·5 cites·16 claims
- 2759US2025172848A1Optical device, transmitter, and transceiverFUJITSU OPTICAL COMPONENTS LTD·Filed 2024·Application pending·0 cites
- 2857US7233716B2Optical switchFUJITSU LTD·Filed 2005·Granted Jun 19, 2007·1 cites·13 claims
- 2957US7031565B2Photonic switchFUJITSU LTD·Filed 2005·Granted Apr 18, 2006·1 cites·3 claims
- 3056US11112625B2Optical modulator including electro-optic polymer in grooves having multiple widthsFUJITSU OPTICAL COMPONENTS LTD·Filed 2020·Granted Sep 7, 2021·0 cites·7 claims
- 3156US7948670B2Optical attenuatorFUJITSU LTD·Filed 2009·Granted May 24, 2011·1 cites·7 claims
- 3255US8243372B2Optical apparatus and optical transmission apparatusAOTA HIROFUMI·Filed 2009·Granted Aug 14, 2012·1 cites·14 claims
- 3355US7653273B2Optical switchFUJITSU LTD·Filed 2005·Granted Jan 26, 2010·1 cites·22 claims
- 3454US4566905AHigh density boron nitride-containing sintered body for cutting tool and a method of producing the sameNIPPON OILS & FATS CO LTD·Filed 1983·Granted Jan 28, 1986·12 cites·2 claims
- 3549US2007290422A1Electronic apparatusFUJITSU LTD·Filed 2006·Application pending·0 cites
- 3645US7787721B2Mirror, mirror unit, and optical switchFUJITSU LTD·Filed 2005·Granted Aug 31, 2010·0 cites·10 claims
- 3745US7613370B2Optical switch and method of adjusting optical switchFUJITSU LTD·Filed 2008·Granted Nov 3, 2009·0 cites·11 claims
- 3845US2009135488A1Optical device and wavelength selective switchFUJITSU LTD·Filed 2008·Application pending·0 cites
- 3944US7706049B2Mirror device and optical apparatusFUJITSU LTD·Filed 2008·Granted Apr 27, 2010·0 cites·22 claims
- 4043US6925222B2Photonic switchFUJITSU LTD·Filed 2002·Granted Aug 2, 2005·0 cites·3 claims
- 4143US2008211044A1Micro-electro-mechanical systems deviceFUJITSU LTD·Filed 2008·Application pending·0 cites
- 4238US2021318588A1Optical modulatorFUJITSU OPTICAL COMPONENTS LTD·Filed 2021·Application pending·0 cites
- 4335US2005191057A1Optical transceiver moduleFUJITSU LTD·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →