Inventor · disambiguated record
Yasuaki Hamada
Also filed as: HAMADA YASUAKI
56 granted patents·27 pending applications·185 citations·filing 2003–2025
98Inventor score
Files withSEIKO EPSON CORP70HAMADA YASUAKI8ADVANCED MATERIAL TECH INC3I PEX PIEZO SOLUTIONS INC1UENO MAYUMI1
Top patents by PatentIndex Score
83 records- 0193US8714712B2Piezoelectric element, liquid ejection head, and liquid ejection deviceHAMADA YASUAKI·Filed 2011·Granted May 6, 2014·11 cites·9 claims
- 0293US8395302B2Piezoelectric material and piezoelectric elementHAMADA YASUAKI·Filed 2011·Granted Mar 12, 2013·11 cites·9 claims
- 0393US8102100B2Piezoelectric material and piezoelectric elementHAMADA YASUAKI·Filed 2009·Granted Jan 24, 2012·20 cites·11 claims
- 0490US7371473B2Ferroelectric film, ferroelectric capacitor, ferroelectric memory, piezoelectric element, semiconductor element, method of manufacturing ferroelectric film, and method of manufacturing ferroelectric capacitorSEIKO EPSON CORP·Filed 2005·Granted May 13, 2008·13 cites·9 claims
- 0587US8721054B2Liquid ejecting head, liquid ejecting apparatus, and piezoelectric elementSEIKO EPSON CORP·Filed 2012·Granted May 13, 2014·4 cites·5 claims
- 0686US7524451B2Method of manufacturing an insulating target materialSEIKO EPSON CORP·Filed 2006·Granted Apr 28, 2009·9 cites·5 claims
- 0784US9190601B2Piezoelectric material, piezoelectric element, liquid ejecting head, liquid ejecting apparatus, ultrasonic sensor, piezoelectric motor, and power generatorSEIKO EPSON CORP·Filed 2014·Granted Nov 17, 2015·4 cites·23 claims
- 0884US7713348B2Precursor composition, method of manufacturing precursor composition, inkjet coating ink, method of manufacturing ferroelectric film, piezoelectric device, semiconductor device, piezoelectric actuator, inkjet recording head, and inkjet printerSEIKO EPSON CORP·Filed 2005·Granted May 11, 2010·9 cites·6 claims
- 0983US9748425B2Photoelectric conversion element and photovoltaic cellSEIKO EPSON CORP·Filed 2014·Granted Aug 29, 2017·4 cites·10 claims
- 1083US9274004B2Infrared sensor and heat sensing elementSEIKO EPSON CORP·Filed 2014·Granted Mar 1, 2016·5 cites·17 claims
- 1183US9276193B2Piezoelectric material, piezoelectric element, liquid ejecting head, liquid ejecting apparatus, ultrasonic sensor, piezoelectric motor, and power generatorSEIKO EPSON CORP·Filed 2014·Granted Mar 1, 2016·4 cites·14 claims
- 1282US7710004B2Insulating target material, method of manufacturing insulating target material, conductive complex oxide film, and deviceSEIKO EPSON CORP·Filed 2009·Granted May 4, 2010·6 cites·8 claims
- 1380US9324933B2Piezoelectric material, piezoelectric element, liquid ejecting head, liquid ejecting apparatus, ultrasonic sensor, piezoelectric motor, and power generatorSEIKO EPSON CORP·Filed 2014·Granted Apr 26, 2016·3 cites·20 claims
- 1476US8641174B2Liquid ejection head, liquid ejection deviceHAMADA YASUAKI·Filed 2011·Granted Feb 4, 2014·2 cites·6 claims
- 1576US7255941B2Ferroelectric film, ferroelectric capacitor, ferroelectric memory, piezoelectric element, semiconductor element, method of manufacturing ferroelectric film, and method of manufacturing ferroelectric capacitorSEIKO EPSON CORP·Filed 2003·Granted Aug 14, 2007·15 cites·6 claims
- 1671US7646073B2Ferroelectric capacitor and ferroelectric memorySEIKO EPSON CORP·Filed 2007·Granted Jan 12, 2010·3 cites·4 claims
- 1770US12311664B2Piezoelectric element, head chip, liquid ejection device, and sensorSEIKO EPSON CORP·Filed 2023·Granted May 27, 2025·0 cites·7 claims
- 1870US7428162B2Memory device including a plurality of capacitorsSEIKO EPSON CORP·Filed 2006·Granted Sep 23, 2008·4 cites·4 claims
- 1969US7214977B2Ferroelectric thin film, method of manufacturing the same, ferroelectric memory device and ferroelectric piezoelectric deviceSEIKO EPSON CORP·Filed 2005·Granted May 8, 2007·2 cites·8 claims
- 2068US7368774B2Capacitor and its manufacturing method, ferroelectric memory device, actuator, and liquid jetting headSEIKO EPSON CORP·Filed 2006·Granted May 6, 2008·3 cites·5 claims
- 2167US12138926B2Piezoelectric substrate, piezoelectric element and liquid ejection headSEIKO EPSON CORP·Filed 2022·Granted Nov 12, 2024·0 cites·7 claims
- 2267US7569400B2Ferroelectric film, method of manufacturing ferroelectric film, ferroelectric capacitor, and ferroelectric memorySEIKO EPSON CORP·Filed 2005·Granted Aug 4, 2009·2 cites·7 claims
- 2366US7266007B2Device structure of ferroelectric memory and nondestructive reading methodSEIKO EPSON CORP·Filed 2005·Granted Sep 4, 2007·2 cites·9 claims
- 2465US12310242B2Piezoelectric element and liquid ejection headSEIKO EPSON CORP·Filed 2022·Granted May 20, 2025·0 cites·8 claims
- 2563US7485182B2Precursor composition, method for manufacturing precursor composition, method for manufacturing ferroelectric film, piezoelectric element, semiconductor device, piezoelectric actuator, ink jet recording head, and ink jet printerSEIKO EPSON CORP·Filed 2005·Granted Feb 3, 2009·1 cites·14 claims
- 2663US7187025B2Ferroelectric material, ferroelectric film and method of manufacturing the same, ferroelectric capacitor and method of manufacturing the same, ferroelectric memory, and piezoelectric deviceSEIKO EPSON CORP·Filed 2004·Granted Mar 6, 2007·8 cites·12 claims
- 2762US11527699B2Piezoelectric element, liquid discharge head, and printerSEIKO EPSON CORP·Filed 2021·Granted Dec 13, 2022·0 cites·5 claims
- 2862US7262450B2MFS type field effect transistor, its manufacturing method, ferroelectric memory and semiconductor deviceSEIKO EPSON CORP·Filed 2005·Granted Aug 28, 2007·2 cites·14 claims
- 2961US9211710B2Liquid ejection head, liquid ejection deviceSEIKO EPSON CORP·Filed 2013·Granted Dec 15, 2015·0 cites·11 claims
- 3061US2014290733A1Photoelectric conversion element and photovoltaic cellSEIKO EPSON CORP·Filed 2014·Application pending·0 cites
- 3160US7303828B2Ferroelectric film, method of manufacturing the same, ferroelectric memory and piezoelectric deviceSEIKO EPSON CORP·Filed 2004·Granted Dec 4, 2007·5 cites·19 claims
- 3260US2025187335A1Actuator, liquid ejection head, and printerSEIKO EPSON CORP·Filed 2024·Application pending·0 cites
- 3360US2025185516A1Piezoelectric Element, Liquid Ejection Head, And PrinterSEIKO EPSON CORP·Filed 2024·Application pending·0 cites
- 3459US12433167B2Piezoelectric element, droplet dispensing head, actuator, and vibratorSEIKO EPSON CORP·Filed 2023·Granted Sep 30, 2025·0 cites·9 claims
- 3559US7142445B2Ferroelectric memory device, method of driving the same, and driver circuitSEIKO EPSON CORP·Filed 2004·Granted Nov 28, 2006·10 cites·11 claims
- 3659US2025144933A1Liquid ejecting apparatusSEIKO EPSON CORP·Filed 2024·Application pending·0 cites
- 3758US2013147880A1Piezoelectric material and piezoelectric elementSEIKO EPSON CORP·Filed 2013·Application pending·0 cites
- 3857US10636957B2Film structure body, actuator, motor and method for manufacturing film structure bodyADVANCED MATERIAL TECH INC·Filed 2016·Granted Apr 28, 2020·0 cites·17 claims
- 3957US6788564B2Ferroelectric storage apparatus, driving method therefor, and driving circuit thereforSEIKO EPSON CORP·Filed 2003·Granted Sep 7, 2004·9 cites·11 claims
- 4056US11691416B2Piezoelectric element, liquid ejecting head, and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2021·Granted Jul 4, 2023·0 cites·31 claims
- 4156US2014290725A1Photoelectric conversion element and photovoltaic cellSEIKO EPSON CORP·Filed 2014·Application pending·0 cites
- 4255US12167697B2Piezoelectric element, piezoelectric element application deviceSEIKO EPSON CORP·Filed 2021·Granted Dec 10, 2024·0 cites·4 claims
- 4355US8075795B2Piezoelectrics, piezoelectric element, and piezoelectric actuatorHAMADA YASUAKI·Filed 2009·Granted Dec 13, 2011·0 cites·3 claims
- 4455US2024114799A1Piezoelectric Substrate, Piezoelectric Element, And Piezoelectric Element Application DeviceSEIKO EPSON CORP·Filed 2023·Application pending·0 cites
- 4554US2009184290A1Precursor composition, method for manufacturing precursor composition, method for manufacturing ferroelectric film, piezoelectric element, semiconductor device, piezoelectric actuator, ink jet recording head, and ink jet printerSEIKO EPSON CORP·Filed 2008·Application pending·0 cites
- 4653US9548406B2Photoelectric conversion element and method of manufacturing the sameSEIKO EPSON CORP·Filed 2014·Granted Jan 17, 2017·0 cites·8 claims
- 4753US9503656B2Solid state imaging device and image acquisition method using solid state imaging elements having a PN junctionSEIKO EPSON CORP·Filed 2014·Granted Nov 22, 2016·0 cites·10 claims
- 4853US9281432B2Photoelectric conversion element, method for manufacturingthe same, optical sensor, and solar cellSEIKO EPSON CORP·Filed 2014·Granted Mar 8, 2016·0 cites·10 claims
- 4953US7026169B2Method of forming PZT ferroelectric filmSEIKO EPSON CORP·Filed 2004·Granted Apr 11, 2006·3 cites·6 claims
- 5053US6870753B2Ferroelectric memorySEIKO EPSON CORP·Filed 2003·Granted Mar 22, 2005·7 cites·6 claims
Showing the top 50 of 83 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Yasuaki Hamada 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 →