Inventor · disambiguated record
Hirofumi Yamaguchi
Also filed as: YAMAGUCHI HIROFUMI
81 granted patents·28 pending applications·776 citations·filing 1991–2025
99Inventor score
Files withNGK INSULATORS LTD63KYOCERA DOCUMENT SOLUTIONS INC8TOKYO ELECTRON LTD8SUMITOMO SEIKA CHEMICALS6KAIGAWA KAZUYUKI4
Top patents by PatentIndex Score
109 records- 0198US5232765ADistributed constant circuit board using ceramic substrate materialNGK INSULATORS LTD·Filed 1991·Granted Aug 3, 1993·186 cites·6 claims
- 0296US5609689AVacuum process apparausTOKYO ELECTRON LTD·Filed 1996·Granted Mar 11, 1997·266 cites·7 claims
- 0395US7723909B2Electron emitter formed of a dielectric material characterized by having high mechanical quality factorNGK INSULATORS LTD·Filed 2006·Granted May 25, 2010·24 cites·7 claims
- 0491US7126255B2Piezoelectric/electrostrictive film-type deviceNGK INSULATORS LTD·Filed 2005·Granted Oct 24, 2006·22 cites·2 claims
- 0590US7576477B2Piezoelectric/electrostrictive porcelain composition and method of manufacturing the sameNGK INSULATORS LTD·Filed 2006·Granted Aug 18, 2009·17 cites·3 claims
- 0688US7911117B2Piezoelectric/electrostrictive body, and piezoelectric/electrostrictive elementNGK INSULATORS LTD·Filed 2008·Granted Mar 22, 2011·7 cites·18 claims
- 0786US7893601B2(Li, Na, K)(Nb, Ta) O3 based piezoelectric materialNGK INSULATORS LTD·Filed 2008·Granted Feb 22, 2011·9 cites·8 claims
- 0885US7901729B2Method of manufacturing a piezoelectric/electrostrictive deviceNGK INSULATORS LTD·Filed 2008·Granted Mar 8, 2011·5 cites·10 claims
- 0985US7477004B2Piezoelectric/electrostrictive porcelain composition, piezoelectric/electrostrictive article, and piezoelectric/electrostrictive film type elementNGK INSULATORS LTD·Filed 2005·Granted Jan 13, 2009·8 cites·12 claims
- 1084US7332851B2Piezoelectric/electrostrictive film type device and method of manufacturing the sameNGK INSULATORS LTD·Filed 2005·Granted Feb 19, 2008·7 cites·30 claims
- 1183US6495945B2Piezoelectric/electrostrictive elementNGK INSULATORS LTD·Filed 2001·Granted Dec 17, 2002·33 cites·6 claims
- 1281US9212087B2Glass-ceramics composite materialNGK INSULATORS LTD·Filed 2014·Granted Dec 15, 2015·5 cites·7 claims
- 1380US7221075B2Piezoelectric/electrostrictive deviceNGK INSULATORS LTD·Filed 2005·Granted May 22, 2007·10 cites·9 claims
- 1478US9212085B2Glass-ceramics composite materialNGK INSULATORS LTD·Filed 2014·Granted Dec 15, 2015·3 cites·12 claims
- 1578US7956518B2Piezoelectric/electrostrictive ceramic composition and piezoelectric/electrostrictive deviceNGK INSULATORS LTD·Filed 2008·Granted Jun 7, 2011·5 cites·15 claims
- 1677US7425790B2Piezoelectric/electrostrictive porcelain composition, piezoelectric/electrostrictive device, and method of piezoelectric/electrostrictive deviceNGK INSULATORS LTD·Filed 2005·Granted Sep 16, 2008·4 cites·10 claims
- 1777US2025343058A1Substrate processing apparatus and substrate processing methodTOKYO ELECTRON LTD·Filed 2025·Application pending·0 cites
- 1876US9012786B2Circuit board for high-capacity modules, and a production method of the circuit boardNGK INSULATORS LTD·Filed 2012·Granted Apr 21, 2015·4 cites·14 claims
- 1976US7803282B2Piezoelectric/electrostrictive body, manufacturing method of the same, and piezoelectric/electrostrictive elementNGK INSULATORS LTD·Filed 2007·Granted Sep 28, 2010·4 cites·20 claims
- 2076US7183694B2Piezoelectric/electrostrictive deviceNGK INSULATORS LTD·Filed 2005·Granted Feb 27, 2007·7 cites·4 claims
- 2175US9824869B2Zinc oxide sputtering targetNGK INSULATORS LTD·Filed 2015·Granted Nov 21, 2017·1 cites·6 claims
- 2275US7276462B2Dielectric composition and dielectric film elementNGK INSULATORS LTD·Filed 2005·Granted Oct 2, 2007·4 cites·14 claims
- 2374US8958215B2Circuit board for peripheral circuits of high-capacity modules, and a high-capacity module including a peripheral circuit using the circuit boardNGK INSULATORS LTD·Filed 2013·Granted Feb 17, 2015·3 cites·12 claims
- 2473US8545160B2Substrate transfer apparatus and substrate transfer methodSAKAUE HIROMITSU·Filed 2010·Granted Oct 1, 2013·4 cites·7 claims
- 2573US7741708B2Semiconductor deviceKOKUSAN DENKI CO·Filed 2005·Granted Jun 22, 2010·7 cites·4 claims
- 2673US7598659B2Piezoelectric ceramic and method of manufacturing the sameNGK INSULATORS LTD·Filed 2007·Granted Oct 6, 2009·6 cites·10 claims
- 2773US6541895B2Piezoelectric/electrostrictive film elementNGK INSULATORS LTD·Filed 2002·Granted Apr 1, 2003·14 cites·4 claims
- 2871US7482739B2Electron emitter comprised of dielectric material mixed with metalNGK INSULATORS LTD·Filed 2005·Granted Jan 27, 2009·2 cites·9 claims
- 2970US8119023B2Piezoelectric/electrostrictive ceramic composition manufacturing methodTANAKA RITSU·Filed 2009·Granted Feb 21, 2012·3 cites·4 claims
- 3070US6531070B1Piezoelectric bodyNGK INSULATORS LTD·Filed 2000·Granted Mar 11, 2003·10 cites·2 claims
- 3169US11620092B2Image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2022·Granted Apr 4, 2023·0 cites·5 claims
- 3269US7511409B2Dielectric film element and compositionNGK INSULATORS LTD·Filed 2005·Granted Mar 31, 2009·2 cites·49 claims
- 3368US2025024565A1Honeycomb structure and method of producing honeycomb structureNGK INSULATORS LTD·Filed 2024·Application pending·0 cites
- 3468US2025229607A1Dehumidification device, heater element for dehumidification devices, and vehicle interior dehumidification systemNGK INSULATORS LTD·Filed 2025·Application pending·0 cites
- 3567US9247633B2Circuit board for peripheral circuits of high-capacity modules, and a high-capacity module including a peripheral circuit using the circuit boardNGK INSULATORS LTD·Filed 2013·Granted Jan 26, 2016·2 cites·8 claims
- 3667US9064758B2High-capacity module including the peripheral circuit using the circuit board and the circuit board concerned for peripheral circuits of a high-capacity moduleNGK INSULATORS LTD·Filed 2012·Granted Jun 23, 2015·2 cites·17 claims
- 3767US7567021B2Monomorph type piezoelectric/electrostrictive device and method for manufacturing the sameNGK INSULATORS LTD·Filed 2007·Granted Jul 28, 2009·4 cites·4 claims
- 3867US7495378B2Dielectric deviceNGK INSULATORS LTD·Filed 2005·Granted Feb 24, 2009·1 cites·11 claims
- 3966US8124047B2Method for manufacturing (Li, Na, K)(Nb, Ta)O3 type piezoelectric materialKAIGAWA KAZUYUKI·Filed 2007·Granted Feb 28, 2012·2 cites·7 claims
- 4066US7592405B2Fluorine-containing photocurable compositionDAINIPPON INK & CHEMICALS·Filed 2004·Granted Sep 22, 2009·8 cites·8 claims
- 4166US6919667B2Piezoelectric/electrostrictive film deviceNGK INSULATORS LTD·Filed 2002·Granted Jul 19, 2005·9 cites·3 claims
- 4265US12381094B2Substrate processing apparatus and substrate processing methodTOKYO ELECTRON LTD·Filed 2022·Granted Aug 5, 2025·0 cites·7 claims
- 4365US11409479B2Image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2021·Granted Aug 9, 2022·0 cites·4 claims
- 4464US8022604B2(Li, Na, K)(Nb, Ta)O3 type piezoelectric/electrostrictive ceramic composition containing 30-50 mol% Ta and piezoelectric/electrorestrictive device containing the sameNGK INSULATORS LTD·Filed 2008·Granted Sep 20, 2011·1 cites·2 claims
- 4564US7466108B2Battery charging control deviceKOKUSAN DENKI CO·Filed 2007·Granted Dec 16, 2008·6 cites·9 claims
- 4663US8736233B2Power source deviceMURAMATSU SHUICHI·Filed 2012·Granted May 27, 2014·4 cites·12 claims
- 4763US7441317B2Piezoelectric/electrostrictive device and method for manufacturing the sameNGK INSULATORS LTD·Filed 2005·Granted Oct 28, 2008·3 cites·4 claims
- 4862US8467895B2Processing system and method for operating the sameSEKIDO KOICHI·Filed 2006·Granted Jun 18, 2013·6 cites·10 claims
- 4962US6887397B2Piezoelectric/electrostrictive material and process for production thereofNGK INSULATORS LTD·Filed 2002·Granted May 3, 2005·5 cites·22 claims
- 5061US2023382188A1Heater element for heating vehicle interior, heater unit for heating vehicle interior, and heater system for heating vehicle interiorNGK INSULATORS LTD·Filed 2023·Application pending·0 cites
Showing the top 50 of 109 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →