Inventor · disambiguated record
Hiroyuki Fukuyama
Also filed as: FUKUYAMA HIROYUKI
34 granted patents·8 pending applications·343 citations·filing 1992–2023
97Inventor score
Files withOKI ELECTRIC IND CO LTD9NIPPON TELEGRAPH & TELEPHONE8FUKUYAMA HIROYUKI5CIRCLE PROMOTION SCIENCE & ENG4BORGWARNER INC3
Top patents by PatentIndex Score
42 records- 0196US6510097B2DRAM interface circuit providing continuous access across row boundariesOKI ELECTRIC IND CO LTD·Filed 2001·Granted Jan 21, 2003·137 cites·28 claims
- 0288US7114113B2Test circuit provided with built-in self test functionOKI ELECTRIC IND CO LTD·Filed 2003·Granted Sep 26, 2006·38 cites·5 claims
- 0387US6744076B2Single crystalline aluminum nitride film, method of forming the same, base substrate for group III element nitride film, light emitting device and surface acoustic wave deviceCIRCLE PROMOTION SCIENCE & ENG·Filed 2002·Granted Jun 1, 2004·38 cites·8 claims
- 0485US9614124B2Substrate having annealed aluminum nitride layer formed thereon and method for manufacturing the sameUNIV TOHOKU·Filed 2015·Granted Apr 4, 2017·5 cites·17 claims
- 0580US10393052B2Injector control device and injector control methodMITSUBISHI ELECTRIC CORP·Filed 2017·Granted Aug 27, 2019·2 cites·8 claims
- 0674US11466755B2Chain guide and tensioning apparatus for vehiclesBORGWARNER INC·Filed 2020·Granted Oct 11, 2022·1 cites·20 claims
- 0773US10243664B2Optical modulator driver circuit and optical transmitterNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Mar 26, 2019·5 cites·13 claims
- 0873US8137825B2Aluminum nitride single crystal film, aluminum nitride single crystal multi-layer substrate and manufacturing processes thereofFUKUYAMA HIROYUKI·Filed 2006·Granted Mar 20, 2012·2 cites·9 claims
- 0971US11362669B2Track and hold circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jun 14, 2022·2 cites·4 claims
- 1069US7437645B2Test circuit for semiconductor deviceOKI ELECTRIC IND CO LTD·Filed 2007·Granted Oct 14, 2008·6 cites·15 claims
- 1169US7363558B2Semiconductor device and method for testing the sameOKI ELECTRIC IND CO LTD·Filed 2004·Granted Apr 22, 2008·13 cites·14 claims
- 1269US7220314B2Single crystalline aluminum nitride film, method of forming the same, base substrate for group III element nitride film, light emitting device and surface acoustic wave deviceCIRCLE PROMOTION SCIENCE & ENG·Filed 2004·Granted May 22, 2007·11 cites·9 claims
- 1367US10570996B2Shoe for chain guide and for chain tensioner arm, and chain guide and chain tensioner arm provided with said shoeBORGWARNER INC·Filed 2015·Granted Feb 25, 2020·1 cites·13 claims
- 1467US8397132B2Memory deviceFUKUYAMA HIROYUKI·Filed 2010·Granted Mar 12, 2013·2 cites·14 claims
- 1566US9143110B2Automatic gain control circuitSANO KIMIKAZU·Filed 2012·Granted Sep 22, 2015·3 cites·3 claims
- 1664US11336491B2Decision feedback equalizerNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted May 17, 2022·1 cites·10 claims
- 1764US7528462B2Aluminum nitride single-crystal multi-layered substrateTOKUYAMA CORP·Filed 2006·Granted May 5, 2009·2 cites·12 claims
- 1864US6826101B2Semiconductor device and method for testing the sameOKI ELECTRIC IND CO LTD·Filed 2003·Granted Nov 30, 2004·11 cites·10 claims
- 1963US11569785B2Transimpedance amplifierNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jan 31, 2023·0 cites·14 claims
- 2063US7338555B2Highly crystalline aluminum nitride multi-layered substrate and production process thereofTOKUYAMA CORP·Filed 2004·Granted Mar 4, 2008·8 cites·3 claims
- 2160US7054403B2Phase-Locked LoopNTT ELECTRONICS CORP·Filed 2001·Granted May 30, 2006·13 cites·22 claims
- 2260US2025034751A1METHOD OF PRODUCING SINGLE CRYSTAL AlN, SINGLE CRYSTAL AlN, AND SINGLE CRYSTAL AlN PRODUCTION APPARATUSUNIV TOHOKU·Filed 2023·Application pending·0 cites
- 2358US7249295B2Test circuit for semiconductor deviceOKI ELECTRIC IND CO LTD·Filed 2003·Granted Jul 24, 2007·9 cites·8 claims
- 2457US7333372B2Reset circuit and integrated circuit device with reset functionOKI ELECTRIC IND CO LTD·Filed 2004·Granted Feb 19, 2008·5 cites·18 claims
- 2557US6025740AClock feeding circuit and method for adjusting clock skewOKI ELECTRIC IND CO LTD·Filed 1993·Granted Feb 15, 2000·13 cites·12 claims
- 2654US8593223B2Automatic gain control circuitSANO KIMIKAZU·Filed 2012·Granted Nov 26, 2013·1 cites·4 claims
- 2752US9879763B2Chain guide and chain transmission deviceNTN TOYO BEARING CO LTD·Filed 2015·Granted Jan 30, 2018·0 cites·10 claims
- 2850US10344699B2Control device for injectorMITSUBISHI ELECTRIC CORP·Filed 2017·Granted Jul 9, 2019·0 cites·6 claims
- 2947US11056209B2Track-and-hold circuitNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jul 6, 2021·0 cites·4 claims
- 3045US2013275702A1Semiconductor memory device and method for reading out dataLAPIS SEMICONDUCTOR CO LTD·Filed 2013·Application pending·0 cites
- 3144US5270592AClock supply circuit layout in a circuit areaOKI ELECTRIC IND CO LTD·Filed 1992·Granted Dec 14, 1993·14 cites·17 claims
- 3243US2012240845A1Production method of an aluminum nitride single crystalFUKUYAMA HIROYUKI·Filed 2010·Application pending·0 cites
- 3342US8735905B2Method for producing aluminum nitride crystalsFUKUYAMA HIROYUKI·Filed 2011·Granted May 27, 2014·0 cites·8 claims
- 3442US2003083855A1Method for generating logic simulation modelFiled 2002·Application pending·0 cites
- 3542US2007138710A1Metallized ceramic molding, process for producing the same and peltier deviceCIRCLE PROMOTION SCIENCE & ENG·Filed 2005·Application pending·0 cites
- 3640US11451253B2Signal generator and signal generation methodNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Sep 20, 2022·0 cites·10 claims
- 3740US2008226298A1Optical Transmission SystemNIPPON TELEGRAPH & TELEPHONE·Filed 2004·Application pending·0 cites
- 3837US11258454B2Analog-digital converterNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Feb 22, 2022·0 cites·12 claims
- 3937US2007161494A1Non-oxide ceramic having oxide layer on the surface thereof, method for production thereof and use thereofCIRCLE PROMOTION SCIENCE & ENG·Filed 2005·Application pending·0 cites
- 4035US8199548B2Semiconductor storage deviceFUKUYAMA HIROYUKI·Filed 2010·Granted Jun 12, 2012·0 cites·20 claims
- 4133US2017248205A1Improved chain guide and tensioning apparatusBORGWARNER INC·Filed 2015·Application pending·0 cites
- 4232US8593201B2Signal output circuitSANO KIMIKAZU·Filed 2012·Granted Nov 26, 2013·0 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when Hiroyuki Fukuyama 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 →