Inventor
FUKUDA YASUHIRO
JP39 patents
⚠️ This page may combine multiple inventors who share the name “FUKUDA YASUHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OKI ELECTRIC IND CO LTD
13 patentsUS6239958B1May 29, 2001
Electrostatic damage protection circuit and dynamic random access memory
OKI ELECTRIC IND CO LTD53 citations92
US5646449AJul 8, 1997
Semiconductor device having a multi-layered conductive structure which includes an aluminum alloy layer, a high melting temperature metal layer, and a high melting temperature nitride layer
OKI ELECTRIC IND CO LTD18 citations91
US5781389AJul 14, 1998
Transistor protection circuit
OKI ELECTRIC IND CO LTD42 citations87
US4823088AApr 18, 1989
Method of and apparatus for testing semiconductor device for electrostatic discharge damage
OKI ELECTRIC IND CO LTD23 citations82
US4636724AJan 13, 1987
Method and apparatus for examining electrostatic discharge damage to semiconductor devices
OKI ELECTRIC IND CO LTD20 citations75
US5608594AMar 4, 1997
Semiconductor integrated circuit with surge-protected output MISFET's
OKI ELECTRIC IND CO LTD10 citations74
US4924280AMay 8, 1990
Semiconductor fet with long channel length
OKI ELECTRIC IND CO LTD8 citations73
US5288948AFeb 22, 1994
Structure of a semiconductor chip having a conductive layer
OKI ELECTRIC IND CO LTD13 citations69
US5850094ADec 15, 1998
Semiconductor device
OKI ELECTRIC IND CO LTD3 citations63
US7498615B2Mar 3, 2009
Electro-static discharge protection circuit and semiconductor device having the same
OKI ELECTRIC IND CO LTD6 citations62
US4987464AJan 22, 1991
Encapsulated FET semiconductor device with large W/L ratio
OKI ELECTRIC IND CO LTD2 citations62
US7102863B2Sep 5, 2006
Electrostatic breakdown preventing circuit for semiconductor device
OKI ELECTRIC IND CO LTD1 citations52
US5432369AJul 11, 1995
Input/output protection circuit
OKI ELECTRIC IND CO LTD1 citations49
OKI SEMICONDUCTOR CO LTD
6 patentsUS7675116B2Mar 9, 2010
Semiconductor device with ESD protection function and ESD protection circuit
OKI SEMICONDUCTOR CO LTD6 citations74
US7550817B2Jun 23, 2009
Semiconductor device having fuse with protection capacitor
OKI SEMICONDUCTOR CO LTD2 citations63
US7816761B2Oct 19, 2010
Semiconductor device having fuse and protection circuit
OKI SEMICONDUCTOR CO LTD3 citations62
US7671415B2Mar 2, 2010
Electro-static discharge protection circuit and semiconductor device having the same
OKI SEMICONDUCTOR CO LTD2 citations62
US7763952B2Jul 27, 2010
Semiconductor device having fuse with protection capacitor
OKI SEMICONDUCTOR CO LTD0 citations52
US7723794B2May 25, 2010
Load driving device
OKI SEMICONDUCTOR CO LTD0 citations41
ROLAND CORP
5 patentsUS11682372B2Jun 20, 2023
Effector mounting plate
ROLAND CORP5 citations73
USD866654SNov 12, 2019
Acoustic effect adder for electronic musical instrument
ROLAND CORP2 citations71
USD1034792SJul 9, 2024
Pedalboard
ROLAND CORP0 citations60
USD1031825SJun 18, 2024
Pedalboard
ROLAND CORP0 citations60
US9006552B2Apr 14, 2015
Effect apparatus for electronic stringed musical instruments
ROLAND CORP0 citations42
NEC CORP
3 patentsUS6222400B1Apr 24, 2001
Lock-in detecting circuit having variable window for checking phase locked loop and method used therein
NEC CORP20 citations91
US6549198B1Apr 15, 2003
Hout position control circuit
NEC CORP10 citations72
US6486857B1Nov 26, 2002
Deflection correction circuit for narrowing a pull-in range of a VCO to reduce frequency variations in a horizontal synchronizing signal
NEC CORP5 citations61