Inventor
KOBAYASHI YOICHIRO
JP33 patents
⚠️ This page may combine multiple inventors who share the name “KOBAYASHI YOICHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI ASTEMO LTD
13 patentsUS12199526B2Jan 14, 2025
Power conversion device configured to observe chip temperature
HITACHI ASTEMO LTD2 citations72
US11979017B2May 7, 2024
Power conversion device
HITACHI ASTEMO LTD2 citations71
US11990897B2May 21, 2024
Current control device for control of supply current with low-side and high-side switch elements and duration measurement
HITACHI ASTEMO LTD0 citations60
US12462960B2Nov 4, 2025
Semiconductor device, control device for transmission, and control method of electronic control unit
HITACHI ASTEMO LTD0 citations57
US12580484B2Mar 17, 2026
Load drive circuit, electronic control device, and control method for electronic control device
HITACHI ASTEMO LTD0 citations51
US12451281B2Oct 21, 2025
Load drive device and method for controlling electronic control device
HITACHI ASTEMO LTD0 citations51
US12549082B2Feb 10, 2026
Power conversion device and method of controlling power conversion device
HITACHI ASTEMO LTD0 citations50
US12222406B2Feb 11, 2025
Integrated circuit device
HITACHI ASTEMO LTD0 citations50
US11855166B2Dec 26, 2023
Semiconductor device including sub-cell disposed at chip center
HITACHI ASTEMO LTD0 citations50
US12191845B2Jan 7, 2025
Load drive device
HITACHI ASTEMO LTD0 citations49
US11881846B2Jan 23, 2024
Load drive device and transmission drive system
HITACHI ASTEMO LTD0 citations49
US12300606B2May 13, 2025
Mirror circuit devices with wide wirings
HITACHI ASTEMO LTD0 citations47
US12087703B2Sep 10, 2024
Semiconductor device and in-vehicle electronic control device using the same
HITACHI ASTEMO LTD0 citations47
HITACHI AUTOMOTIVE SYSTEMS LTD
7 patentsUS10992127B2Apr 27, 2021
Electronic control unit
HITACHI AUTOMOTIVE SYSTEMS LTD1 citations62
US11604483B2Mar 14, 2023
Current generator circuit and diagnostic circuit
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations57
US11098689B2Aug 24, 2021
Ignition device for internal combustion engine
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations52
US11319918B2May 3, 2022
Internal combustion engine ignition device
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations51
US11208977B2Dec 28, 2021
Ignition control device and reference voltage adjustment method of ignition control device
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations51
US10587263B2Mar 10, 2020
Load drive apparatus
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations51
US11043508B2Jun 22, 2021
Semiconductor integrated circuit device, current control device using semiconductor integrated circuit device, and automatic transmission control device using current control device
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations50
HITACHI LTD
6 patentsUS5515047AMay 7, 1996
Converter, offset adjustor, and portable communication terminal unit
HITACHI LTD66 citations94
US7082004B2Jul 25, 2006
Disk storage systems
HITACHI LTD20 citations90
US8008963B2Aug 30, 2011
Analog switch
HITACHI LTD10 citations83
US7239467B2Jul 3, 2007
Storage media reading writing system
HITACHI LTD8 citations72
US6762896B2Jul 13, 2004
Storage media reading writing system
HITACHI LTD11 citations72
US6867936B2Mar 15, 2005
Driving circuit for a magnetic head and magnetic recording apparatus
HITACHI LTD2 citations60