Inventor · disambiguated record
Ken Kitahara
Also filed as: KITAHARA KEN · KITAHARA LEGAL REPRESENTATIVE · KURODA KOJI
27 granted patents·4 pending applications·81 citations·filing 2002–2025
93Inventor score
Top patents by PatentIndex Score
31 records- 0196US7234870B2Plain bearingDAIDO METAL CO·Filed 2005·Granted Jun 26, 2007·35 cites·3 claims
- 0292US9133063B2Composite crucible, method of manufacturing the same, and method of manufacturing silicon crystalSUDO TOSHIAKI·Filed 2010·Granted Sep 15, 2015·9 cites·2 claims
- 0389US7572060B2Sliding bearingDAIDO METAL CO·Filed 2005·Granted Aug 11, 2009·13 cites·18 claims
- 0486US12392050B2Infrared transmissivity measurement method of quartz glass crucibleSUMCO CORP·Filed 2024·Granted Aug 19, 2025·0 cites·5 claims
- 0586US2025347027A1Quartz glass crucible capable of measuring infrared transmittanceSUMCO CORP·Filed 2025·Application pending·0 cites
- 0679US6648513B2Plain bearingDAIDO METAL CO·Filed 2002·Granted Nov 18, 2003·16 cites·2 claims
- 0776US9932692B2Vitreous silica crucibleSUMCO CORP·Filed 2013·Granted Apr 3, 2018·2 cites·3 claims
- 0873US11939695B2Quartz glass crucible, manufacturing method of silicon single crystal using the same, and infrared transmissivity measurement method and manufacturing method of quartz glass crucibleSUMCO CORP·Filed 2019·Granted Mar 26, 2024·0 cites·7 claims
- 0973US9758901B2Vitreous silica crucible for pulling of silicon single crystal and method for manufacturing the sameSUMCO CORP·Filed 2013·Granted Sep 12, 2017·1 cites·7 claims
- 1072US10024784B2Vitreous silica crucible and evaluation method of the sameSUMCO CORP·Filed 2017·Granted Jul 17, 2018·1 cites·2 claims
- 1172US9863061B2Vitreous silica crucible and method for manufacturing the sameSUMCO CORP·Filed 2014·Granted Jan 9, 2018·1 cites·17 claims
- 1271US9708730B1Quality-evaluated vitreous silica crucibleSUMCO CORP·Filed 2017·Granted Jul 18, 2017·0 cites·4 claims
- 1369US9816917B2Vitreous silica crucible and distortion-measuring apparatus for the sameSUMCO CORP·Filed 2014·Granted Nov 14, 2017·1 cites·18 claims
- 1464US9653268B2Inspection method of vitreous silica crucibleSUMCO CORP·Filed 2016·Granted May 16, 2017·0 cites·9 claims
- 1564US9266763B2Composite crucible and method of manufacturing the sameSUDO TOSHIAKI·Filed 2011·Granted Feb 23, 2016·0 cites·3 claims
- 1664US2025376785A1Quartz glass crucible for single-crystal silicon pulling and method for producing single-crystal silicon using sameSUMCO CORP·Filed 2023·Application pending·0 cites
- 1762US9809902B2Method for evaluating silica glass crucible, method for producing silicon single crystalsSUMCO CORP·Filed 2012·Granted Nov 7, 2017·2 cites·21 claims
- 1861US9557276B2Inspection method of vitreous silica crucibleSUMCO CORP·Filed 2013·Granted Jan 31, 2017·0 cites·16 claims
- 1960US9964478B2Destructive inspection method and quality determination method for vitreous silica crucibleSUMCO CORP·Filed 2015·Granted May 8, 2018·0 cites·12 claims
- 2059US11535546B2Silica glass crucibleSUMCO CORP·Filed 2018·Granted Dec 27, 2022·0 cites·20 claims
- 2159US9863059B2Method for pulling silicon single crystalSUMCO CORP·Filed 2013·Granted Jan 9, 2018·0 cites·5 claims
- 2258US9527763B2Method of manufacturing composite crucibleSUMCO CORP·Filed 2015·Granted Dec 27, 2016·0 cites·6 claims
- 2355US12116692B2Quartz glass crucibleSUMCO CORP·Filed 2019·Granted Oct 15, 2024·0 cites·16 claims
- 2455US9758900B2Silica glass crucibleSUMCO CORP·Filed 2012·Granted Sep 12, 2017·0 cites·6 claims
- 2554US8936684B2Vitreous silica crucibleSUDO TOSHIAKI·Filed 2011·Granted Jan 20, 2015·0 cites·11 claims
- 2653US2015337456A1Method of manufacturing composite crucible and method of manufacturing silicon crystalSUMCO CORP·Filed 2015·Application pending·0 cites
- 2751US9810526B2Method for measuring three-dimensional shape of silica glass crucible, and method for producing monocrystalline siliconSUMCO CORP·Filed 2012·Granted Nov 7, 2017·0 cites·9 claims
- 2849US9637405B2Evaluation method of suitable silica powder in manufacturing vitreous silica crucible for pulling of silicon single crystalSUMCO CORP·Filed 2013·Granted May 2, 2017·0 cites·8 claims
- 2941US2017292204A1Manufacturing method and manufacturing system for silicon single crystalSUMCO CORP·Filed 2015·Application pending·0 cites
- 3040US9347148B2Vitreous silica crucible with specific ratio of transparent layer and bubble-containing layer thicknessesSUDO TOSHIAKI·Filed 2011·Granted May 24, 2016·0 cites·5 claims
- 3138US10243329B2External resonator laserUNIV CHIBA NAT UNIV CORP·Filed 2013·Granted Mar 26, 2019·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →