Inventor · disambiguated record
Tetsuya Igarashi
Also filed as: IGARASHI TETSUYA
20 granted patents·9 pending applications·206 citations·filing 1999–2020
92Inventor score
Files withPOWDERTECH CO LTD16MATSUURA MACHINERY CORP5SHINETSU HANDOTAI KK5MITSUBISHI POWER LTD1SHINETSU QUARTZ PROD1
Top patents by PatentIndex Score
29 records- 0194US6544656B1Production method for silicon wafer and silicon waferSHINETSU HANDOTAI KK·Filed 2000·Granted Apr 8, 2003·127 cites·24 claims
- 0289US10825593B2Ni—Zn—Cu ferrite particle, resin composition, and resin moldingPOWDERTECH CO LTD·Filed 2017·Granted Nov 3, 2020·3 cites·14 claims
- 0387US6815605B1Silicon single crystal and wafer doped with gallium and method for producing themSHINETSU HANDOTAI KK·Filed 2000·Granted Nov 9, 2004·29 cites·38 claims
- 0484US11014826B2Ferrite particles, resin composition and resin filmPOWDERTECH CO LTD·Filed 2017·Granted May 25, 2021·2 cites·5 claims
- 0583US10593454B2Spherical ferrite particles in nano-size and method of manufacturing samePOWDERTECH CO LTD·Filed 2015·Granted Mar 17, 2020·2 cites·6 claims
- 0675US6280522B1Quartz glass crucible for pulling silicon single crystal and production process for such crucibleSHINETSU QUARTZ PROD·Filed 1999·Granted Aug 28, 2001·23 cites·19 claims
- 0770US11651881B2Mn—Zn ferrite particles, resin molded body, soft magnetic mixed powder, and magnetic corePOWDERTECH CO LTD·Filed 2018·Granted May 16, 2023·0 cites·6 claims
- 0870US9815120B2Cutting method for inner circumferential face or outer circumferential face of workMATSUURA MACHINERY CORP·Filed 2017·Granted Nov 14, 2017·1 cites·9 claims
- 0968US9557682B2Resin-coated carrier for electrophotographic developer and electrophotographic developer using the resin-coated carrierSUGIURA TAKAO·Filed 2012·Granted Jan 31, 2017·1 cites·12 claims
- 1065US11952286B2Mn ferrite powder, resin composition, electromagnetic wave shielding material, electronic material, and electronic componentPOWDERTECH CO LTD·Filed 2019·Granted Apr 9, 2024·0 cites·8 claims
- 1165US7879522B2Carrier core material for electrophotographic developer, carrier and electrophotographic developer using the carrierPOWDERTECH CO LTD·Filed 2009·Granted Feb 1, 2011·2 cites·19 claims
- 1261US11072537B2Ferrite powder, resin composition, and molded articlePOWDERTECH CO LTD·Filed 2017·Granted Jul 27, 2021·0 cites·12 claims
- 1359US11542174B2Ferrite particles, resin compositions and electromagnetic wave shielding materialPOWDERTECH CO LTD·Filed 2017·Granted Jan 3, 2023·0 cites·5 claims
- 1457US10562111B2Cutting toolMATSUURA MACHINERY CORP·Filed 2018·Granted Feb 18, 2020·0 cites·8 claims
- 1557US6153009AMethod for producing a silicon single crystal and the silicon single crystal produced therebySHINETSU HANDOTAI KK·Filed 1999·Granted Nov 28, 2000·13 cites·18 claims
- 1654US11032955B2Ferrite powder, resin composition, electromagnetic shielding material, electronic circuit substrate, electronic circuit component, and electronic device housingPOWDERTECH CO LTD·Filed 2017·Granted Jun 8, 2021·0 cites·14 claims
- 1748US10501333B2Spherical ferrite powder, resin compound including spherical ferrite powder, and molded product made of resin compoundPOWDERTECH CO LTD·Filed 2015·Granted Dec 10, 2019·0 cites·6 claims
- 1848US2016044838A1Composite magnetic powder for noise suppressionPOWDERTECH CO LTD·Filed 2014·Application pending·0 cites
- 1947US2017095864A1Cutting Method for Inner Circumferential Face or Outer Circumferential Face of WorkMATSUURA MACHINERY CORP·Filed 2016·Application pending·0 cites
- 2046US2019040226A1Ferrite powder, resin composition, and molded articlePOWDERTECH CO LTD·Filed 2017·Application pending·0 cites
- 2145US9833841B2Cutting method for inner circumferential face or outer circumferential face of workMATSUURA MACHINERY CORP·Filed 2016·Granted Dec 5, 2017·0 cites·8 claims
- 2245US2019224760A1Cutting ToolMATSUURA MACHINERY CORP·Filed 2018·Application pending·0 cites
- 2341US6764548B2Apparatus and method for producing silicon semiconductor single crystalSHINETSU HANDOTAI KK·Filed 2001·Granted Jul 20, 2004·0 cites·29 claims
- 2441US2011013948A1Core material of carrier for electrophotographic developer and method for manufacturing the core material, carrier and method for manufacturing the carrier, and electrophotographic developer using the carrierPOWDERTECH CO LTD·Filed 2009·Application pending·0 cites
- 2538US2018009677A1Hexagonal plate shaped ferrite powder, manufacturing method thereof, and resin compound and molded product using the ferrite powderPOWDERTECH CO LTD·Filed 2016·Application pending·0 cites
- 2638US2007141502A1Ferrite carrier core material for electrophotography, ferrite carrier for electrophotography and methods for producing them, and electrophotographic developer using the ferrite carrierPOWDERTECH CO LTD·Filed 2006·Application pending·0 cites
- 2737US2017349449A1Plate shaped ferrite particles having metallic luster for pigmentPOWDERTECH CO LTD·Filed 2016·Application pending·0 cites
- 2831US6498288B1Silicon germanium crystalSHINETSU HANDOTAI KK·Filed 1999·Granted Dec 24, 2002·3 cites·20 claims
- 2929US2022205395A1Fuel gas supply device and methodMITSUBISHI POWER LTD·Filed 2020·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →