Inventor · disambiguated record
Koji Yamakawa
Also filed as: YAMAKAWA KOJI
84 granted patents·31 pending applications·2,051 citations·filing 1988–2025
99Inventor score
Top patents by PatentIndex Score
115 records- 0197US6170939B1Liquid storing container for recording apparatusCANON KK·Filed 1996·Granted Jan 9, 2001·148 cites·6 claims
- 0297US5583549ALiquid storing container for recording apparatusCANON KK·Filed 1993·Granted Dec 10, 1996·132 cites·10 claims
- 0396US9362487B2Ferroelectric memory and manufacturing method of the sameTOSHIBA KK·Filed 2013·Granted Jun 7, 2016·32 cites·3 claims
- 0496US8604573B2Semiconductor memory deviceYAMAKAWA KOJI·Filed 2012·Granted Dec 10, 2013·45 cites·11 claims
- 0596US4970571ABump and method of manufacturing the sameTOSHIBA KK·Filed 1988·Granted Nov 13, 1990·166 cites·13 claims
- 0695US10629809B2Semiconductor memory deviceTOSHIBA MEMORY CORP·Filed 2019·Granted Apr 21, 2020·11 cites·20 claims
- 0795US8587043B2Magnetoresistive random access memory and method of manufacturing the sameNATORI KATSUAKI·Filed 2011·Granted Nov 19, 2013·46 cites·8 claims
- 0895USD348479SInk cartridge for printerCANON KK·Filed 1992·Granted Jul 5, 1994·60 cites·1 claims
- 0993US5781213ALiquid storing container having filter interface for recording apparatusCANON KK·Filed 1996·Granted Jul 14, 1998·76 cites·6 claims
- 1093US5297077AMemory having ferroelectric capacitors polarized in nonvolatile modeTOSHIBA KK·Filed 1991·Granted Mar 22, 1994·117 cites·19 claims
- 1192US10516095B2Magnetic memory deviceTOSHIBA MEMORY CORP·Filed 2018·Granted Dec 24, 2019·4 cites·12 claims
- 1292US4906341AMethod of manufacturing semiconductor device and apparatus thereforTOSHIBA KK·Filed 1988·Granted Mar 6, 1990·104 cites·6 claims
- 1391US5589862ALiquid storing container for recording apparatusCANON KK·Filed 1995·Granted Dec 31, 1996·66 cites·8 claims
- 1491US5155573AFerroelectric capacitor and a semiconductor device having the sameTOSHIBA KK·Filed 1990·Granted Oct 13, 1992·93 cites·17 claims
- 1589US5821627AElectronic circuit deviceTOSHIBA KK·Filed 1997·Granted Oct 13, 1998·118 cites·20 claims
- 1689US5400275ASemiconductor memory device using ferroelectric capacitor and having only one sense amplifier selectedTOSHIBA KK·Filed 1991·Granted Mar 21, 1995·77 cites·22 claims
- 1786US6982444B2Ferroelectric memory device having a hydrogen barrier filmTOSHIBA KK·Filed 2003·Granted Jan 3, 2006·30 cites·12 claims
- 1886US2025365961A1Semiconductor device, semiconductor device manufacturing method, and semiconductor device manufacturing apparatusKIOXIA CORP·Filed 2025·Application pending·0 cites
- 1985US5714801ASemiconductor packageTOSHIBA KK·Filed 1996·Granted Feb 3, 1998·81 cites·12 claims
- 2084US7473565B2Semiconductor device and method of manufacturing the sameTOSHIBA KK·Filed 2005·Granted Jan 6, 2009·9 cites·4 claims
- 2183US6351006B1Ferroelectric capacitor with means to prevent deteriorationTOSHIBA KK·Filed 1999·Granted Feb 26, 2002·55 cites·12 claims
- 2283US5517445ANon-volatile semiconductor memory device capable of electrically performing read and write operation and method of reading information from the sameTOKYO SHIBAURA ELECTRIC CO·Filed 1991·Granted May 14, 1996·57 cites·8 claims
- 2380US7812425B2Semiconductor device with lower capacitor electrode that includes islands of conductive oxide films arranged on a noble metal filmTOSHIBA KK·Filed 2008·Granted Oct 12, 2010·7 cites·10 claims
- 2479US8982614B2Magnetoresistive effect element and manufacturing method thereofTOSHIBA KK·Filed 2013·Granted Mar 17, 2015·3 cites·11 claims
- 2579US5907187AElectronic component and electronic component connecting structureTOSHIBA KK·Filed 1995·Granted May 25, 1999·57 cites·12 claims
- 2679US5606352AInk jet cartridge having a can filtered ink supply member and ink jet apparatus including the sameCANON KK·Filed 1993·Granted Feb 25, 1997·34 cites·9 claims
- 2778US9196823B2Magnetoresistive effect elementTOSHIBA KK·Filed 2013·Granted Nov 24, 2015·6 cites·16 claims
- 2878US8653614B2Semiconductor memory device and method for manufacturing the sameIKENO DAISUKE·Filed 2012·Granted Feb 18, 2014·6 cites·10 claims
- 2978USD338489SPrinting head for printerCANON KK·Filed 1992·Granted Aug 17, 1993·19 cites·1 claims
- 3077US6586790B2Semiconductor device and method for manufacturing the sameTOSHIBA KK·Filed 1999·Granted Jul 1, 2003·32 cites·10 claims
- 3177US5652608AInk jet recording head, ink jet recording head cartridge, recording apparatus using the same and method of manufacturing the headCANON KK·Filed 1996·Granted Jul 29, 1997·36 cites·13 claims
- 3275US12507413B2Semiconductor device, semiconductor device manufacturing method, and semiconductor device manufacturing apparatusKIOXIA CORP·Filed 2023·Granted Dec 23, 2025·0 cites·3 claims
- 3375US8010022B2Developing roller and method of producing the same, and inspection process for developing roller productBRIDGESTONE CORP·Filed 2007·Granted Aug 30, 2011·4 cites·6 claims
- 3475US6787831B2Barrier stack with improved barrier propertiesINFINEON TECHNOLOGIES AG·Filed 2002·Granted Sep 7, 2004·15 cites·23 claims
- 3574US7501675B2Semiconductor device and method of manufacturing the sameTOSHIBA KK·Filed 2005·Granted Mar 10, 2009·6 cites·17 claims
- 3672US6328427B1Method of producing a wiring substrateCANON KK·Filed 1997·Granted Dec 11, 2001·41 cites·7 claims
- 3770US10818730B2Semiconductor memory deviceTOSHIBA MEMORY CORP·Filed 2019·Granted Oct 27, 2020·2 cites·20 claims
- 3870US7190015B2Semiconductor device and method of manufacturing the sameTOSHIBA KK·Filed 2004·Granted Mar 13, 2007·14 cites·14 claims
- 3969US8710604B2Magnetoresistive element and manufacturing method of the sameYAMAKAWA KOJI·Filed 2012·Granted Apr 29, 2014·3 cites·3 claims
- 4069USD338911SPrinting head for printerCANON KK·Filed 1992·Granted Aug 31, 1993·13 cites·1 claims
- 4167US7573120B2Semiconductor device and method of manufacturing the sameTOSHIBA KK·Filed 2005·Granted Aug 11, 2009·2 cites·9 claims
- 4267US6377358B1Method for correcting a recording head, correction apparatus therefor, recording head corrected by use of such apparatus, and recording apparatus using such recording headCANON KK·Filed 1998·Granted Apr 23, 2002·24 cites·20 claims
- 4366US9196335B2Magnetic memoryTOSHIBA KK·Filed 2013·Granted Nov 24, 2015·1 cites·21 claims
- 4465US5412160ACircuit boardTOSHIBA KK·Filed 1994·Granted May 2, 1995·33 cites·7 claims
- 4564US7531408B2Method of manufacturing a semiconductor device containing a PbxSr(1-x)[Zr,Ti]xRu(1-x)O3 film in a capacitorTOSHIBA KK·Filed 2007·Granted May 12, 2009·1 cites·5 claims
- 4664US2025388476A1Polycarbosilane, method for producing polycarbosilane, and method for producing silicon carbide fibersKUREHA CORP·Filed 2023·Application pending·0 cites
- 4763US9447518B2Radical generator and molecular beam epitaxy apparatusHORI MASARU·Filed 2011·Granted Sep 20, 2016·1 cites·10 claims
- 4863US8410529B2Magnetic random access memory and method of fabricating the sameIKENO DAISUKE·Filed 2011·Granted Apr 2, 2013·1 cites·19 claims
- 4962USD352058SPrinting head body for printerCANON KK·Filed 1993·Granted Nov 1, 1994·10 cites·1 claims
- 5062US2021305275A1Semiconductor device, semiconductor device manufacturing method, and semiconductor device manufacturing apparatusKIOXIA CORP·Filed 2020·Application pending·0 cites
Showing the top 50 of 115 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Koji Yamakawa 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 →