Inventor · disambiguated record
Hiroshi Usui
Also filed as: USUI HIROSHI
61 granted patents·18 pending applications·1,243 citations·filing 1986–2024
99Inventor score
Files withSANKEN ELECTRIC CO LTD31ASAHI GLASS CO LTD17OMRON HEALTHCARE CO LTD11USUI HIROSHI6OMRON TATEISI ELECTRONICS CO5
Top patents by PatentIndex Score
79 records- 0194US6939819B2Glass ceramic compositionASAHI GLASS CO LTD·Filed 2003·Granted Sep 6, 2005·87 cites·23 claims
- 0293US7768801B2Current resonant DC-DC converter of multi-output typeSANKEN ELECTRIC CO LTD·Filed 2005·Granted Aug 3, 2010·81 cites·16 claims
- 0392US7304867B2DC-DC converter of multi-output typeSANKEN ELECTRIC CO LTD·Filed 2006·Granted Dec 4, 2007·38 cites·9 claims
- 0491US6355586B1Low melting point glass and glass ceramic compositionASAHI GLASS CO LTD·Filed 2000·Granted Mar 12, 2002·67 cites·24 claims
- 0588US7176660B2Switching power source apparatus and power factor correctorSANKEN ELECTRIC CO LTD·Filed 2005·Granted Feb 13, 2007·28 cites·10 claims
- 0687USD891468STerminal device having a display screen with graphical user interfaceOMRON HEALTHCARE CO LTD·Filed 2019·Granted Jul 28, 2020·28 cites·1 claims
- 0787US7872417B2Glass-sealed light emitting element, circuit board with the glass-sealed light emitting element, and methods for manufacturing thoseASAHI GLASS CO LTD·Filed 2007·Granted Jan 18, 2011·13 cites·13 claims
- 0886US5578533ACeramic color composition and process for producing a curved surface glass sheet employing itASAHI GLASS CO LTD·Filed 1994·Granted Nov 26, 1996·53 cites·5 claims
- 0985USD891469STerminal device having a display screen with graphical user interfaceOMRON HEALTHCARE CO LTD·Filed 2019·Granted Jul 28, 2020·25 cites·1 claims
- 1085US4758937ADC-DC converterSANKEN ELECTRIC CO LTD·Filed 1987·Granted Jul 19, 1988·54 cites·24 claims
- 1184US8416582B2DC-DC converterUSUI HIROSHI·Filed 2010·Granted Apr 9, 2013·7 cites·4 claims
- 1284US8395912B2Resonant switching power supply device which suppresses a switching frequency raised at the time of light loadUSUI HIROSHI·Filed 2010·Granted Mar 12, 2013·7 cites·17 claims
- 1384US7326666B2Glass for forming barrier ribs, and plasma display panelASAHI GLASS CO LTD·Filed 2004·Granted Feb 5, 2008·22 cites·19 claims
- 1482US6835028B2Indexable insert and cutting toolNGK SPARK PLUG CO·Filed 2004·Granted Dec 28, 2004·30 cites·8 claims
- 1582US6373735B2AC-DC converter with reduced energy loss through a switching elementSANKEN ELECTRIC CO LTD·Filed 2001·Granted Apr 16, 2002·42 cites·13 claims
- 1681US7618723B2Glass substrate for magnetic disk, its production method and magnetic diskASAHI GLASS CO LTD·Filed 2007·Granted Nov 17, 2009·5 cites·16 claims
- 1780US5817586AColored ceramic compositionASAHI GLASS CO LTD·Filed 1997·Granted Oct 6, 1998·48 cites·10 claims
- 1879US6980445B2Power factor improving converter and control method thereofSANKEN ELECTRIC CO LTD·Filed 2003·Granted Dec 27, 2005·37 cites·30 claims
- 1978US6741155B2TransformerSANKEN ELECTRIC CO LTD·Filed 2002·Granted May 25, 2004·17 cites·12 claims
- 2076US7221128B2Converter with start-up circuitSANKEN ELECTRIC CO LTD·Filed 2003·Granted May 22, 2007·41 cites·13 claims
- 2176US5719755ADc to dc converterSANKEN ELECTRIC CO LTD·Filed 1996·Granted Feb 17, 1998·51 cites·18 claims
- 2275US5733828AHermetic sealing compositionASAHI GLASS CO LTD·Filed 1997·Granted Mar 31, 1998·38 cites·6 claims
- 2375US4763236ADC-DC converterSANKEN ELECTRIC CO LTD·Filed 1987·Granted Aug 9, 1988·33 cites·2 claims
- 2474US7639516B2Switching power source deviceSANKEN ELECTRIC CO LTD·Filed 2005·Granted Dec 29, 2009·11 cites·5 claims
- 2573US7757389B2Method of manufacturing an ultrasonic probeGE MED SYS GLOBAL TECH CO LLC·Filed 2007·Granted Jul 20, 2010·3 cites·12 claims
- 2673US5618764AColored ceramic composition and method for producing curved glass plate using the sameASAHI GLASS CO LTD·Filed 1995·Granted Apr 8, 1997·36 cites·20 claims
- 2772US7719860B2Power supply and its controlling methodSANKEN ELECTRIC CO LTD·Filed 2004·Granted May 18, 2010·25 cites·9 claims
- 2871US7928701B2AC-DC converterSANKEN ELECTRIC CO LTD·Filed 2008·Granted Apr 19, 2011·9 cites·5 claims
- 2971US7857680B2Method for producing glass substrate for magnetic disk, and magnetic diskASAHI GLASS CO LTD·Filed 2007·Granted Dec 28, 2010·2 cites·15 claims
- 3071US2024185982A1Medical care assistance system, medical care assistance device, and recording mediumOMRON HEALTHCARE CO LTD·Filed 2024·Application pending·0 cites
- 3171US2024274293A1Medical care assistance system, medical care assistance device, and recording mediumOMRON HEALTHCARE CO LTD·Filed 2024·Application pending·0 cites
- 3269US6366479B1DC-DC converter with reduced energy loss under lowered load impedanceSANKEN ELECTRIC CO LTD·Filed 2000·Granted Apr 2, 2002·23 cites·13 claims
- 3368US7633776B2DC-DC converter for overvoltage protectionSANKEN ELECTRIC CO LTD·Filed 2006·Granted Dec 15, 2009·8 cites·14 claims
- 3467US5643636ACeramic color composition and method for producing a glass sheetASAHI GLASS CO LTD·Filed 1996·Granted Jul 1, 1997·27 cites·9 claims
- 3566US8648577B2DC-DC converterUSUI HIROSHI·Filed 2011·Granted Feb 11, 2014·2 cites·8 claims
- 3666US7522429B2DC-DC converterSANKEN ELECTRIC CO LTD·Filed 2006·Granted Apr 21, 2009·7 cites·7 claims
- 3766US6221125B1Water-atomized spherical metal powders and method for producing the sameMITSUBISHI STEEL MFG·Filed 1995·Granted Apr 24, 2001·28 cites·5 claims
- 3866US5085814AProduction process of expansion-molded articleJSP CORP·Filed 1990·Granted Feb 4, 1992·27 cites·13 claims
- 3964US8817494B2PFC AC/DC converter reducing harmonics, switching loss, and switching noiseUSUI HIROSHI·Filed 2011·Granted Aug 26, 2014·2 cites·6 claims
- 4064US7439686B2Discharge-lamp lighting apparatusSANKEN ELECTRIC CO LTD·Filed 2007·Granted Oct 21, 2008·2 cites·13 claims
- 4163US9459609B2Actuator monitoring circuit, controller, and actuator unitKOIZUMI TAKASHI·Filed 2010·Granted Oct 4, 2016·5 cites·7 claims
- 4263US7215525B2Overheat protector for a dc-to-dc converter or the likeSANKEN ELECTRIC CO LTD·Filed 2005·Granted May 8, 2007·6 cites·27 claims
- 4363US6287996B1Ceramic color composition and process for producing a curved glass plateASAHI GLASS CO LTD·Filed 1999·Granted Sep 11, 2001·26 cites·8 claims
- 4463US2024180438A1Medical care assistance system, medical care assistance device, and recording mediumOMRON HEALTHCARE CO LTD·Filed 2024·Application pending·0 cites
- 4562US7994736B2Cold cathode fluorescent lamp inverter apparatusSANKEN ELECTRIC CO LTD·Filed 2007·Granted Aug 9, 2011·2 cites·13 claims
- 4662US6760203B2Switching power supply with overcurrent protectionSANKEN ELECTRIC CO LTD·Filed 2002·Granted Jul 6, 2004·16 cites·5 claims
- 4761US8411466B2Output controlled DC-to-DC converterUSUI HIROSHI·Filed 2010·Granted Apr 2, 2013·2 cites·3 claims
- 4861US7566845B2Overheat protection circuit for power supply devices and direct-current power supply deviceSANKEN ELECTRIC CO LTD·Filed 2006·Granted Jul 28, 2009·5 cites·5 claims
- 4959US7719240B2AC-DC converterSANKEN ELECTRIC CO LTD·Filed 2008·Granted May 18, 2010·4 cites·10 claims
- 5059US5732762AApparatus for heat treating castings containing coresHONDA MOTOR CO LTD·Filed 1996·Granted Mar 31, 1998·18 cites·5 claims
Showing the top 50 of 79 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Hiroshi Usui 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 →