Inventor
YOSHINAGA MASAKI
JP18 patents
⚠️ This page may combine multiple inventors who share the name “YOSHINAGA MASAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
9 patentsUS5638012AJun 10, 1997
Write driver circuit
HITACHI LTD45 citations92
US5434717AJul 18, 1995
Read and/or write integrated circuit having an operation timing adjusting circuit and constant current elements
HITACHI LTD42 citations92
US5392172AFeb 21, 1995
Magnetic head circuit having a write current changeover circuit with a clamp voltage depending on write current for high-speed data transfer
HITACHI LTD33 citations92
US6218903B1Apr 17, 2001
Signal amplifier and magnetic disk storage apparatus using the same
HITACHI LTD27 citations91
US6114905ASep 5, 2000
Signal amplifier apparatus and magnetic disk storage apparatus using the same
HITACHI LTD14 citations81
US7239467B2Jul 3, 2007
Storage media reading writing system
HITACHI LTD8 citations72
US6762896B2Jul 13, 2004
Storage media reading writing system
HITACHI LTD11 citations72
US6163218ADec 19, 2000
Signal amplifier apparatus and magnetic disk storage apparatus using the same
HITACHI LTD12 citations72
US7982537B2Jul 19, 2011
Operational amplifier
HITACHI LTD5 citations63
NIDEC CORP
7 patentsUS10389265B2Aug 20, 2019
Module, and power conversion apparatus and motor using the module
NIDEC CORP4 citations71
US11437892B2Sep 6, 2022
Motor
NIDEC CORP0 citations58
US11431230B2Aug 30, 2022
Motor
NIDEC CORP0 citations58
US11047929B2Jun 29, 2021
Signal processing circuit and motor drive system
NIDEC CORP0 citations57
US11349374B2May 31, 2022
Motor
NIDEC CORP0 citations48
US11277083B2Mar 15, 2022
Motor
NIDEC CORP0 citations48
US11183961B2Nov 23, 2021
Arithmetic circuit, control circuit, and display orientation detecting system
NIDEC CORP0 citations47