Inventor · disambiguated record
Masataka Hourai
Also filed as: HOURAI MASATAKA
29 granted patents·17 pending applications·346 citations·filing 1997–2025
96Inventor score
Files withSUMCO CORP25SUMITOMO MITSUBISHI SILICON6ONO TOSHIAKI5SADAMITSU SHINSUKE2SUMITOMO SITIX CORP2
Top patents by PatentIndex Score
46 records- 0194US7320731B2Process for growing silicon single crystal and process for producing silicon waferSUMCO CORP·Filed 2006·Granted Jan 22, 2008·19 cites·8 claims
- 0293US5954873AManufacturing method for a silicon single crystal waferSUMITOMO SITIX CORP·Filed 1997·Granted Sep 21, 1999·151 cites·9 claims
- 0392US7435294B2Method for manufacturing silicon single crystal, and silicon waferSUMCO CORP·Filed 2006·Granted Oct 14, 2008·11 cites·5 claims
- 0492US7364618B2Silicon wafer, method for manufacturing the same and method for growing silicon single crystalsSUMCO CORP·Filed 2005·Granted Apr 29, 2008·12 cites·5 claims
- 0589US7700394B2Method for manufacturing silicon wafer methodSUMCO CORP·Filed 2005·Granted Apr 20, 2010·20 cites·8 claims
- 0686US7384480B2Apparatus for manufacturing semiconductor single crystalSUMCO CORP·Filed 2006·Granted Jun 10, 2008·6 cites·10 claims
- 0786US7374741B2Method for growing silicon single crystal and silicon waferSUMCO CORP·Filed 2006·Granted May 20, 2008·6 cites·7 claims
- 0883US7637997B2Silicon wafer, method for producing silicon wafer and method for growing silicon single crystalSUMCO CORP·Filed 2006·Granted Dec 29, 2009·9 cites·21 claims
- 0983US7300517B2Manufacturing method of hydrogen-doped silicon single crystalSUMCO CORP·Filed 2005·Granted Nov 27, 2007·5 cites·5 claims
- 1082US6365461B1Method of manufacturing epitaxial waferSUMITOMO METAL IND·Filed 2000·Granted Apr 2, 2002·19 cites·20 claims
- 1178US8411263B2Method of evaluating silicon wafer and method of manufacturing silicon waferUCHINO SHIN·Filed 2012·Granted Apr 2, 2013·8 cites·7 claims
- 1277US6245430B1Silicon single crystal wafer and manufacturing method for itSUMITOMO SITIX CORP·Filed 1999·Granted Jun 12, 2001·28 cites·23 claims
- 1374USRE39173ESilicon single crystal waferSUMITOMO MITSUBISHI SILICON·Filed 2002·Granted Jul 11, 2006·10 cites·23 claims
- 1472US8617311B2Silicon single crystal wafer for IGBT and method for manufacturing silicon single crystal wafer for IGBTONO TOSHIAKI·Filed 2007·Granted Dec 31, 2013·3 cites·6 claims
- 1569US7306676B2Apparatus for manufacturing semiconductor single crystalSUMCO CORP·Filed 2006·Granted Dec 11, 2007·5 cites·13 claims
- 1668US6905771B2Silicon waferSUMITOMO MITSUBISHI SILICON·Filed 2003·Granted Jun 14, 2005·12 cites·14 claims
- 1767US8173523B2Method of removing heavy metal in semiconductor substrateMITSUGI NORITOMO·Filed 2010·Granted May 8, 2012·3 cites·7 claims
- 1867US7936051B2Silicon wafer and its manufacturing methodSUMCO CORP·Filed 2008·Granted May 3, 2011·2 cites·4 claims
- 1965US8037761B2Quantitative evaluation device and method of atomic vacancy existing in silicon waferUNIV NIIGATA·Filed 2007·Granted Oct 18, 2011·2 cites·19 claims
- 2063US7563319B2Manufacturing method of silicon waferSUMITOMO MITSUBISHI SILICON·Filed 2003·Granted Jul 21, 2009·9 cites·12 claims
- 2162US7258739B2Process for producing epitaxial silicon wafer and silicon wafer produced by process thereofSUMITOMO MITSUBISHI SILICON·Filed 2005·Granted Aug 21, 2007·1 cites·7 claims
- 2260US2009261301A1Method for growing silicon single crystal, and silicon waferSUMCO CORP·Filed 2009·Application pending·0 cites
- 2356US2009305518A1Soi wafer and manufacturing method thereofSUMCO CORP·Filed 2009·Application pending·0 cites
- 2455US11078595B2Method of producing silicon single crystal ingot and silicon single crystal ingotSUMCO CORP·Filed 2018·Granted Aug 3, 2021·0 cites·10 claims
- 2554US2010127354A1Silicon single crystal and method for growing thereof, and silicon wafer and method for manufacturing thereofSUMCO CORP·Filed 2009·Application pending·0 cites
- 2653US2008233717A1Soi wafer and manufacturing method thereofSUMCO CORP·Filed 2008·Application pending·0 cites
- 2753US2006225639A1Method for growing silicon single crystal, and silicon waferONO TOSHIAKI·Filed 2006·Application pending·0 cites
- 2852US2009235861A1Carbon-doped single crystal manufacturing methodSUMCO CORP·Filed 2009·Application pending·0 cites
- 2951US7226571B2High resistivity silicon wafer and method for fabricating the sameSUMITOMO MITSUBISHI SILICON·Filed 2004·Granted Jun 5, 2007·3 cites·18 claims
- 3050US7824493B2Silicon wafer and method for manufacturing the sameSUMITOMO MITSUBISHI SILICON·Filed 2005·Granted Nov 2, 2010·0 cites·5 claims
- 3149US8460463B2Silicon wafer and method for producing the sameUMENO SHIGERU·Filed 2009·Granted Jun 11, 2013·0 cites·5 claims
- 3248US8758505B2Silicon wafer and method for manufacturing the sameONO TOSHIAKI·Filed 2010·Granted Jun 24, 2014·0 cites·5 claims
- 3348US2025185323A1Silicon wafer and epitaxial silicon waferSUMCO CORP·Filed 2025·Application pending·0 cites
- 3448US2010052103A1Silicon wafer and method for producing the sameSUMCO CORP·Filed 2009·Application pending·0 cites
- 3548US2020040480A1Method of producing silicon single crystal ingot and silicon single crystal growth apparatusSUMCO CORP·Filed 2018·Application pending·0 cites
- 3648US2009293799A1Method for growing silicon single crystal, and silicon waferONO TOSHIAKI·Filed 2009·Application pending·0 cites
- 3746US7704318B2Silicon wafer, SOI substrate, method for growing silicon single crystal, method for manufacturing silicon wafer, and method for manufacturing SOI substrateSUMCO CORP·Filed 2004·Granted Apr 27, 2010·1 cites·2 claims
- 3846US2011171814A1Silicon epitaxial wafer and production method for sameSUMCO CORP·Filed 2011·Application pending·0 cites
- 3945US2010288184A1Silicon single crystal wafer for igbt and method for manufacturing silicon single crystal wafer for igbtONO TOSHIAKI·Filed 2010·Application pending·0 cites
- 4044US7803228B2Process for producing high-resistance silicon wafers and process for producing epitaxial wafers and SOI wafersSUMCO CORP·Filed 2004·Granted Sep 28, 2010·1 cites·8 claims
- 4143US2009217866A1METHOD FOR PRODUCING Si SINGLE CRYSTAL INGOT BY CZ METHODSUMCO CORP·Filed 2007·Application pending·0 cites
- 4243US2006249074A1Method for supplying hydrogen gas in silicon single-crystal growth, and method for manufacturing silicon single-crystalSUMCO CORP·Filed 2005·Application pending·0 cites
- 4342US2009304490A1Method for holding silicon waferKIHARA TAKAYUKI·Filed 2008·Application pending·0 cites
- 4442US2007095274A1Silicon wafer and method for producing sameSUMCO CORP·Filed 2006·Application pending·0 cites
- 4540US2009017291A1Silicon epitaxial wafer and production method for sameSADAMITSU SHINSUKE·Filed 2005·Application pending·0 cites
- 4635US8252404B2High resistivity silicon wafersSADAMITSU SHINSUKE·Filed 2004·Granted Aug 28, 2012·0 cites·12 claims
Join the waitlist — get patent alerts
Get an alert when Masataka Hourai 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 →