Inventor
FUKUYAMA HIROYUKI
JP34 patents
⚠️ This page may combine multiple inventors who share the name “FUKUYAMA HIROYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OKI ELECTRIC IND CO LTD
9 patentsUS6510097B2Jan 21, 2003
DRAM interface circuit providing continuous access across row boundaries
OKI ELECTRIC IND CO LTD137 citations98
US7114113B2Sep 26, 2006
Test circuit provided with built-in self test function
OKI ELECTRIC IND CO LTD38 citations92
US7363558B2Apr 22, 2008
Semiconductor device and method for testing the same
OKI ELECTRIC IND CO LTD13 citations84
US6826101B2Nov 30, 2004
Semiconductor device and method for testing the same
OKI ELECTRIC IND CO LTD11 citations74
US6025740AFeb 15, 2000
Clock feeding circuit and method for adjusting clock skew
OKI ELECTRIC IND CO LTD13 citations74
US7437645B2Oct 14, 2008
Test circuit for semiconductor device
OKI ELECTRIC IND CO LTD6 citations73
US7249295B2Jul 24, 2007
Test circuit for semiconductor device
OKI ELECTRIC IND CO LTD9 citations73
US5270592ADec 14, 1993
Clock supply circuit layout in a circuit area
OKI ELECTRIC IND CO LTD14 citations73
US7333372B2Feb 19, 2008
Reset circuit and integrated circuit device with reset function
OKI ELECTRIC IND CO LTD5 citations62
NIPPON TELEGRAPH & TELEPHONE
7 patentsUS11362669B2Jun 14, 2022
Track and hold circuit
NIPPON TELEGRAPH & TELEPHONE2 citations73
US10243664B2Mar 26, 2019
Optical modulator driver circuit and optical transmitter
NIPPON TELEGRAPH & TELEPHONE5 citations71
US11569785B2Jan 31, 2023
Transimpedance amplifier
NIPPON TELEGRAPH & TELEPHONE0 citations62
US11336491B2May 17, 2022
Decision feedback equalizer
NIPPON TELEGRAPH & TELEPHONE1 citations59
US11451253B2Sep 20, 2022
Signal generator and signal generation method
NIPPON TELEGRAPH & TELEPHONE0 citations52
US11056209B2Jul 6, 2021
Track-and-hold circuit
NIPPON TELEGRAPH & TELEPHONE0 citations51
US11258454B2Feb 22, 2022
Analog-digital converter
NIPPON TELEGRAPH & TELEPHONE0 citations48
FUKUYAMA HIROYUKI
4 patentsUS8397132B2Mar 12, 2013
Memory device
FUKUYAMA HIROYUKI2 citations61
US8137825B2Mar 20, 2012
Aluminum nitride single crystal film, aluminum nitride single crystal multi-layer substrate and manufacturing processes thereof
FUKUYAMA HIROYUKI2 citations58
US8199548B2Jun 12, 2012
Semiconductor storage device
FUKUYAMA HIROYUKI0 citations50
US8735905B2May 27, 2014
Method for producing aluminum nitride crystals
FUKUYAMA HIROYUKI0 citations46
SANO KIMIKAZU
3 patentsCIRCLE PROMOTION SCIENCE & ENG
2 patentsUS6744076B2Jun 1, 2004
Single crystalline aluminum nitride film, method of forming the same, base substrate for group III element nitride film, light emitting device and surface acoustic wave device
CIRCLE PROMOTION SCIENCE & ENG38 citations90
US7220314B2May 22, 2007
Single crystalline aluminum nitride film, method of forming the same, base substrate for group III element nitride film, light emitting device and surface acoustic wave device
CIRCLE PROMOTION SCIENCE & ENG11 citations82