Inventor · disambiguated record
Takashi Yamagajo
Also filed as: YAMAGAJO TAKASHI
64 granted patents·14 pending applications·429 citations·filing 2000–2021
98Inventor score
Top patents by PatentIndex Score
78 records- 0191US7323994B2RFID tagFUJITSU LTD·Filed 2005·Granted Jan 29, 2008·27 cites·33 claims
- 0291US7277017B2RFID tagFUJITSU LTD·Filed 2005·Granted Oct 2, 2007·28 cites·5 claims
- 0390US7486192B2RFID tag with frequency adjusting portionFUJITSU LTD·Filed 2006·Granted Feb 3, 2009·23 cites·12 claims
- 0489US7659863B2Tag antennaFUJITSU LTD·Filed 2005·Granted Feb 9, 2010·20 cites·5 claims
- 0588US7538738B2Tag-use antenna and tag using the sameFUJITSU LTD·Filed 2006·Granted May 26, 2009·17 cites·7 claims
- 0686US7446727B2Cross dipole antenna and tag using the sameFUJITSU LTD·Filed 2006·Granted Nov 4, 2008·17 cites·11 claims
- 0785US7570225B2Antenna and non-contact tagFUJITSU LTD·Filed 2007·Granted Aug 4, 2009·16 cites·12 claims
- 0884US7548167B2RF tag and method of manufacturing the RF tagFUJITSU LTD·Filed 2008·Granted Jun 16, 2009·14 cites·14 claims
- 0983US9692127B2Antenna device and antenna systemFUJITSU LTD·Filed 2015·Granted Jun 27, 2017·5 cites·19 claims
- 1083US7378972B2RFID tagFUJITSU LTD·Filed 2006·Granted May 27, 2008·11 cites·16 claims
- 1181US8217841B2Frequency tunable antennaHOSSAIN GOLAM SORWAR·Filed 2010·Granted Jul 10, 2012·13 cites·10 claims
- 1281US8134505B2RF tag and method of manufacturing the RF tagYAMAGAJO TAKASHI·Filed 2008·Granted Mar 13, 2012·12 cites·13 claims
- 1381US7598873B2RFID tag and manufacturing method thereofFUJITSU LTD·Filed 2006·Granted Oct 6, 2009·12 cites·9 claims
- 1481US7342498B2Radio frequency identification (RFID) tag and manufacturing method thereofFUJITSU LTD·Filed 2004·Granted Mar 11, 2008·29 cites·22 claims
- 1580US8412506B2Electromagnetic field simulation apparatus and computer readable storage medium storing electromagnetic field simulation programYAMAGAJO TAKASHI·Filed 2010·Granted Apr 2, 2013·6 cites·10 claims
- 1679US8462072B2Antenna device, printed circuit board including antenna device, and wireless communication device including antenna deviceANDRENKO ANDREY·Filed 2009·Granted Jun 11, 2013·12 cites·23 claims
- 1779US7580000B2Folding dipole antenna and tag using the sameFUJITSU LTD·Filed 2006·Granted Aug 25, 2009·11 cites·7 claims
- 1878US8552916B2Antenna and radio communication apparatusHOSSAIN MD GOLAM SORWAR·Filed 2010·Granted Oct 8, 2013·12 cites·3 claims
- 1978US8068057B2RFID tagYAMAGAJO TAKASHI·Filed 2007·Granted Nov 29, 2011·10 cites·3 claims
- 2077US8022878B2RFID tag and manufacturing method thereofFUJITSU LTD·Filed 2007·Granted Sep 20, 2011·6 cites·2 claims
- 2176US8462052B2RFID tag and manufacturing method thereofYAMAGAJO TAKASHI·Filed 2011·Granted Jun 11, 2013·3 cites·1 claims
- 2276US7916032B2Radio frequency identification (RFID) tag and manufacturing method thereofFUJITSU LTD·Filed 2008·Granted Mar 29, 2011·7 cites·6 claims
- 2376US7324058B2Tag antenna, tag and RFID system using the sameFUJITSU LTD·Filed 2006·Granted Jan 29, 2008·9 cites·9 claims
- 2475US7911404B2RF tag and method of producing RF tagFUJITSU LTD·Filed 2008·Granted Mar 22, 2011·8 cites·8 claims
- 2575US7516901B2RFID tagFUJITSU LTD·Filed 2005·Granted Apr 14, 2009·6 cites·12 claims
- 2674US7205954B2Meander line antennaFUJITSU LTD·Filed 2005·Granted Apr 17, 2007·8 cites·5 claims
- 2773US10862212B2Antenna device and wireless communication deviceFUJITSU LTD·Filed 2018·Granted Dec 8, 2020·2 cites·11 claims
- 2873US8570173B2Radio frequency tag and method of manufacturing the sameKAI MANABU·Filed 2010·Granted Oct 29, 2013·3 cites·21 claims
- 2973US7928921B2Tag-use antenna and tag using the sameFUJITSU LTD·Filed 2008·Granted Apr 19, 2011·6 cites·6 claims
- 3073US7027941B2Device and method for calculating electro-magnetic field intensity by cooperation of circuit analyses and electro-magnetic wave analysesFUJITSU LTD·Filed 2005·Granted Apr 11, 2006·6 cites·12 claims
- 3172US10454176B2Antenna apparatus and electronic deviceFUJITSU LTD·Filed 2017·Granted Oct 22, 2019·2 cites·5 claims
- 3271US9276322B2Antenna device and mobile phoneBAN YASUMITSU·Filed 2012·Granted Mar 1, 2016·4 cites·14 claims
- 3371US9124007B2Antenna apparatus and radio terminal apparatusYAMAGAJO TAKASHI·Filed 2010·Granted Sep 1, 2015·4 cites·11 claims
- 3470US8172149B2Wireless frequency tag and method for manufacturing wireless frequency tagYAMAGAJO TAKASHI·Filed 2010·Granted May 8, 2012·3 cites·3 claims
- 3569US8022886B2Crossed dual tag apparatus and system using crossed dual tag apparatusFUJITSU LTD·Filed 2008·Granted Sep 20, 2011·6 cites·17 claims
- 3669US7132999B2Meander line antennaFUJITSU LTD·Filed 2005·Granted Nov 7, 2006·6 cites·6 claims
- 3767US7633445B2Radio frequency identification tag and antenna for radio frequency identification tagFUJITSU LTD·Filed 2006·Granted Dec 15, 2009·5 cites·12 claims
- 3867US6456949B1Method and apparatus for calculating electromagnetic field intensity, and a computer-readable recording mediumFUJITSU LTD·Filed 2000·Granted Sep 24, 2002·12 cites·28 claims
- 3966US9600605B2Antenna design method and apparatusFUJITSU LTD·Filed 2013·Granted Mar 21, 2017·2 cites·12 claims
- 4065US7859414B2Tag antenna and tagFUJITSU LTD·Filed 2008·Granted Dec 28, 2010·4 cites·10 claims
- 4163US9223908B2Antenna designing method and apparatusFUJITSU LTD·Filed 2012·Granted Dec 29, 2015·1 cites·7 claims
- 4263US8472907B2Antenna device and communication deviceYAMAGAJO TAKASHI·Filed 2010·Granted Jun 25, 2013·2 cites·9 claims
- 4362US9905939B2Antenna deviceFUJITSU LTD·Filed 2015·Granted Feb 27, 2018·1 cites·14 claims
- 4460US7880680B2Tag device, antenna, and portable cardFUJITSU LTD·Filed 2007·Granted Feb 1, 2011·3 cites·23 claims
- 4559US9831556B2Planar antennaFUJITSU LTD·Filed 2014·Granted Nov 28, 2017·1 cites·11 claims
- 4659US7633455B2Plane antennaFUJITSU LTD·Filed 2006·Granted Dec 15, 2009·3 cites·11 claims
- 4759US7427919B2RFID tag set, RFID tag and RFID tag componentFUJITSU LTD·Filed 2005·Granted Sep 23, 2008·1 cites·2 claims
- 4858US7089130B2Electric/magnetic field analysis method using finite difference time domain, material descriptive method in electric/magnetic analysis, electric/magnetic analysis device, analysis data generation device and storage mediumFUJITSU LTD·Filed 2004·Granted Aug 8, 2006·6 cites·13 claims
- 4953US7667658B2Antenna and RFID tag with same mountedFUJITSU LTD·Filed 2007·Granted Feb 23, 2010·1 cites·6 claims
- 5052US7501992B2Planar antennaFUJITSU LTD·Filed 2007·Granted Mar 10, 2009·1 cites·10 claims
Showing the top 50 of 78 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Takashi Yamagajo files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →