Inventor · disambiguated record
Daisuke Koizumi
Also filed as: KOIZUMI DAISUKE
27 granted patents·217 citations·filing 1999–2017
96Inventor score
Files withNTT DOCOMO INC10FUJITSU LTD9FUJITSU SEMICONDUCTOR LTD3KOIZUMI DAISUKE3FUJITSU MICROELECTRONICS LTD1
Top patents by PatentIndex Score
27 records- 0194US6927343B2Contactor for testing miniaturized devices and componentsFUJITSU LTD·Filed 2002·Granted Aug 9, 2005·72 cites·32 claims
- 0289US6563330B1Probe card and method of testing wafer having a plurality of semiconductor devicesFUJITSU LTD·Filed 2000·Granted May 13, 2003·37 cites·18 claims
- 0386US7378924B2Filter with improved capacitive coupling portionNTT DOCOMO INC·Filed 2005·Granted May 27, 2008·13 cites·3 claims
- 0482US7292124B2Variable resonator and variable phase shifterNTT DOCOMO INC·Filed 2005·Granted Nov 6, 2007·9 cites·11 claims
- 0581US7430798B2Electronic component attaching toolFUJITSU LTD·Filed 2005·Granted Oct 7, 2008·10 cites·20 claims
- 0678US7397331B2Coupling structure, resonator excitation structure and filter for coplanar-waveguide circuitNTT DOCOMO INC·Filed 2006·Granted Jul 8, 2008·7 cites·7 claims
- 0772US8051554B2IC socket with attached electronic componentFUJITSU SEMICONDUCTOR LTD·Filed 2008·Granted Nov 8, 2011·3 cites·2 claims
- 0872US7977961B2Component for testing device for electronic component and testing method of the electronic componentFUJITSU SEMICONDUCTOR LTD·Filed 2009·Granted Jul 12, 2011·4 cites·7 claims
- 0966US7825676B2Contactor and test method using contactorFUJITSU SEMICONDUCTOR LTD·Filed 2007·Granted Nov 2, 2010·5 cites·17 claims
- 1066US7764147B2Coplanar resonator and filter using the sameNTT DOCOMO INC·Filed 2006·Granted Jul 27, 2010·3 cites·9 claims
- 1166US7518388B2Contactor for electronic components and test method using the sameFUJITSU MICROELECTRONICS LTD·Filed 2007·Granted Apr 14, 2009·4 cites·13 claims
- 1263US7309996B2Contactor for electronic components and test method using the sameFUJITSU LTD·Filed 2004·Granted Dec 18, 2007·9 cites·3 claims
- 1362US7710222B2Dual band resonator and dual band filterNTT DOCOMO INC·Filed 2008·Granted May 4, 2010·2 cites·10 claims
- 1462US6924174B2Method of attaching electronic component and electronic component attaching toolFUJITSU LTD·Filed 2003·Granted Aug 2, 2005·7 cites·9 claims
- 1561US7564699B2Planar circuit housingNTT DOCOMO INC·Filed 2005·Granted Jul 21, 2009·2 cites·7 claims
- 1661US6774650B2Probe card and method of testing wafer having a plurality of semiconductor devicesFUJITSU LTD·Filed 2003·Granted Aug 10, 2004·7 cites·3 claims
- 1760US8671557B2Tray in combination with electronic component attaching tool attached to the trayKOIZUMI DAISUKE·Filed 2011·Granted Mar 18, 2014·1 cites·3 claims
- 1859US7978027B2Coplanar waveguide resonator and coplanar waveguide filter using the sameNTT DOCOMO INC·Filed 2008·Granted Jul 12, 2011·2 cites·8 claims
- 1952US7403024B2Contactor having contact electrodes of metal springs embedded in a plate-like structureFUJITSU LTD·Filed 2004·Granted Jul 22, 2008·4 cites·3 claims
- 2047US6410354B1Semiconductor substrate test device and methodFUJITSU LTD·Filed 2001·Granted Jun 25, 2002·2 cites·24 claims
- 2145US7161449B2Coplanar waveguide resonatorNTT DOCOMO INC·Filed 2004·Granted Jan 9, 2007·1 cites·15 claims
- 2244US6203332B1Attachment structure of semiconductor device socketFUJITSU LTD·Filed 1999·Granted Mar 20, 2001·10 cites·11 claims
- 2342US8213992B2Radio base station apparatusKOIZUMI DAISUKE·Filed 2008·Granted Jul 3, 2012·0 cites·25 claims
- 2441US10681735B2Wireless environment evaluation method and wireless communicaton systemNIPPON TELEGRAPH & TELEPHONE·Filed 2017·Granted Jun 9, 2020·0 cites·10 claims
- 2540US8428651B2Radio base station apparatusKOIZUMI DAISUKE·Filed 2008·Granted Apr 23, 2013·0 cites·7 claims
- 2640US7307045B2Signal switching deviceNTT DOCOMO INC·Filed 2003·Granted Dec 11, 2007·3 cites·12 claims
- 2736US7774034B2Signal switching deviceNTT DOCOMO INC·Filed 2007·Granted Aug 10, 2010·0 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →