Inventor · disambiguated record
Koji Tsukamoto
Also filed as: TSUKAMOTO KOJI
57 granted patents·24 pending applications·1,322 citations·filing 1987–2025
99Inventor score
Top patents by PatentIndex Score
81 records- 0197US10478950B2Power toolMAKITA CORP·Filed 2016·Granted Nov 19, 2019·12 cites·11 claims
- 0295US6549752B2Apparatus and method accumulating cases to be learnedFUJITSU LTD·Filed 2001·Granted Apr 15, 2003·92 cites·12 claims
- 0395US5835646AActive optical circuit sheet or active optical circuit board, active optical connector and optical MCM, process for fabricating optical waveguide, and devices obtained therebyFUJITSU LTD·Filed 1996·Granted Nov 10, 1998·193 cites·9 claims
- 0493US6693736B1Optical circuit system and components of sameFUJITSU LTD·Filed 2000·Granted Feb 17, 2004·61 cites·7 claims
- 0592US5917980AOptical circuit device, its manufacturing process and a multilayer optical circuit using said optical circuit deviceFUJITSU LTD·Filed 1993·Granted Jun 29, 1999·98 cites·21 claims
- 0690US10974372B2Impact toolMAKITA CORP·Filed 2019·Granted Apr 13, 2021·5 cites·20 claims
- 0790US6504966B2Optical deflecting element, optical switch module, light signal switching deviceFUJITSU LTD·Filed 2002·Granted Jan 7, 2003·43 cites·19 claims
- 0889US7099534B2Optical transmission device with optical waveguide coupled to optical deviceFUJITSU LTD·Filed 2002·Granted Aug 29, 2006·22 cites·15 claims
- 0987US6215585B1Optical circuit system and components of same technical fieldFUJITSU LTD·Filed 1998·Granted Apr 10, 2001·80 cites·14 claims
- 1087US5757989AOptical circuit system capable of producing optical signal having a small fluctuation and components of sameFUJITSU LTD·Filed 1993·Granted May 26, 1998·80 cites·7 claims
- 1186US10906163B2Power toolMAKITA CORP·Filed 2019·Granted Feb 2, 2021·4 cites·21 claims
- 1286US7469240B2Document classification program, vector transformation program, lexical-distortion cancellation program, document classification method, and document classification apparatusFUJITSU LTD·Filed 2005·Granted Dec 23, 2008·17 cites·14 claims
- 1386US5658966AMethod of coupling optical parts and refractive index imaging materialFUJITSU LTD·Filed 1995·Granted Aug 19, 1997·48 cites·2 claims
- 1484US5902715AMethod of forming a mirror in a waveguideFUJITSU LTD·Filed 1997·Granted May 11, 1999·54 cites·8 claims
- 1582US9818132B2Advertisement delivery management apparatus and advertisement delivery management methodYAHOO JAPAN CORP·Filed 2013·Granted Nov 14, 2017·5 cites·8 claims
- 1682US6739508B2Evaluation apparatus with voting system, evaluation method with voting system, and a computer productFUJITSU LTD·Filed 2001·Granted May 25, 2004·63 cites·14 claims
- 1782US6486235B2Composition of epoxy resin, curing agent, phosphate of resorcinol, Al (OH)FUJITSU LTD·Filed 2000·Granted Nov 26, 2002·25 cites·13 claims
- 1881US6081632AMethod of producing optical waveguide system, optical device and optical coupler employing the same, optical network and optical circuit boardFUJITSU LTD·Filed 1997·Granted Jun 27, 2000·141 cites·25 claims
- 1980US10761663B2Input deviceALPS ALPINE CO LTD·Filed 2018·Granted Sep 1, 2020·3 cites·18 claims
- 2079US7359594B2Optical waveguide structure and optical moduleFUJITSU LTD·Filed 2004·Granted Apr 15, 2008·20 cites·19 claims
- 2178US8139015B2Amplification circuit, driver circuit for display, and displayKAWAGUCHI KEIKO·Filed 2006·Granted Mar 20, 2012·7 cites·14 claims
- 2278US7370024B2Case classification apparatus and methodFUJITSU LTD·Filed 2005·Granted May 6, 2008·9 cites·17 claims
- 2377US12409533B2Impact toolMAKITA CORP·Filed 2023·Granted Sep 9, 2025·0 cites·19 claims
- 2477US5581646AMethod of coupling optical parts and refractive index imaging materialFUJITSU LTD·Filed 1995·Granted Dec 3, 1996·36 cites·31 claims
- 2576US6017681AMethod of coupling optical parts and method of forming a mirrorFUJITSU LTD·Filed 1995·Granted Jan 25, 2000·39 cites·3 claims
- 2675US7071458B2Optical element, optical transmission unit and optical transmission systemFUJITSU LTD·Filed 2005·Granted Jul 4, 2006·7 cites·16 claims
- 2774US7197697B1Apparatus for retrieving information using reference reason of documentFUJITSU LTD·Filed 2000·Granted Mar 27, 2007·20 cites·19 claims
- 2873US6920295B2Image forming apparatusSHARP KK·Filed 2003·Granted Jul 19, 2005·12 cites·43 claims
- 2971USD308741SCombined mop handle and mop holderYAMAZAKI SANGYO KK·Filed 1987·Granted Jun 19, 1990·13 cites·1 claims
- 3068US7043111B2Optical parts coupling structure, method of manufacturing the same, optical switch, two-dimensional lens array, and method of manufacturing the sameFUJITSU LTD·Filed 2005·Granted May 9, 2006·5 cites·4 claims
- 3168US5818983AOptical integrated circuit, optical circuit waveguide device and process for oriented, selective growth and formation of organic filmFUJITSU LTD·Filed 1996·Granted Oct 6, 1998·37 cites·50 claims
- 3267US2025209502A1Information processing device, information processing method, and non-transitory computer readable storage mediumLY CORP·Filed 2024·Application pending·0 cites
- 3365US6338975B1Optical circuit device, its manufacturing process and a multilayer optical circuit using said optical circuit deviceFUJITSU LTD·Filed 1999·Granted Jan 15, 2002·26 cites·43 claims
- 3464US7528673B2Oscillator circuit and semiconductor device having oscillator circuitSONY CORP·Filed 2005·Granted May 5, 2009·6 cites·14 claims
- 3563US11053937B2Curved flexible impellerNOK CORP·Filed 2017·Granted Jul 6, 2021·0 cites·2 claims
- 3659US2024058927A1Impact toolMAKITA CORP·Filed 2023·Application pending·0 cites
- 3758US10402855B2Advertisement distribution device and advertisement distribution methodYAHOO JAPAN CORP·Filed 2014·Granted Sep 3, 2019·0 cites·9 claims
- 3858US10296942B2Advertisement choosing device and advertisement choosing methodYAHOO JAPAN CORP·Filed 2013·Granted May 21, 2019·0 cites·11 claims
- 3958US6603937B2Image forming apparatusSHARP KK·Filed 2001·Granted Aug 5, 2003·6 cites·9 claims
- 4058US2014149226A1Advertisement delivery management apparatus and advertisement delivery management methodYAHOO JAPAN CORP·Filed 2013·Application pending·0 cites
- 4158US2014379463A1Advertisement distribution management apparatus, advertisement distribution system, and advertisement distribution management methodYAHOO JAPAN CORP·Filed 2014·Application pending·0 cites
- 4258US2014149212A1Advertisement delivery management apparatus and advertisement delivery management methodYAHOO JAPAN CORP·Filed 2013·Application pending·0 cites
- 4357US10223712B2Information providing apparatus, advertisement delivery system, information providing method, and information providing programYAHOO JAPAN CORP·Filed 2013·Granted Mar 5, 2019·0 cites·15 claims
- 4457US9524512B2Advertisement delivery management apparatus and advertisement delivery management methodYAHOO JAPAN CORP·Filed 2013·Granted Dec 20, 2016·0 cites·9 claims
- 4557US9514480B2Advertisement delivery management apparatus and advertisement delivery management methodYAHOO JAPAN CORP·Filed 2013·Granted Dec 6, 2016·0 cites·18 claims
- 4657US9508088B2Advertisement delivery management apparatus and advertisement delivery management methodYAHOO JAPAN CORP·Filed 2013·Granted Nov 29, 2016·0 cites·10 claims
- 4757US5861444ARefractive index imaging materialFUJITSU LTD·Filed 1997·Granted Jan 19, 1999·15 cites·1 claims
- 4857US2014095308A1Advertisement distribution apparatus and advertisement distribution methodYAHOO JAPAN CORP·Filed 2013·Application pending·0 cites
- 4955US10019735B2Advertisement distribution apparatus, distribution method, and distribution programYAHOO JAPAN CORP·Filed 2013·Granted Jul 10, 2018·0 cites·13 claims
- 5054US2025390911A1Information processing apparatus, information processing method, and non-transitory computer readable storage mediumLY CORP·Filed 2025·Application pending·0 cites
Showing the top 50 of 81 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →