Inventor
KOYANAGI KIMIYUKI
JP24 patents
⚠️ This page may combine multiple inventors who share the name “KOYANAGI KIMIYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI ELECTRIC CORP
18 patentsUS5251194AOct 5, 1993
Techniques for controlling beam position and focus in optical disk drives
MITSUBISHI ELECTRIC CORP109 citations93
US5481517AJan 2, 1996
Track jump control means for a disk apparatus
MITSUBISHI ELECTRIC CORP9 citations73
US9780685B2Oct 3, 2017
Electrical power converter with a converter cell series unit
MITSUBISHI ELECTRIC CORP3 citations72
US10186952B2Jan 22, 2019
Power conversion device
MITSUBISHI ELECTRIC CORP2 citations70
US9866120B2Jan 9, 2018
Power conversion device
MITSUBISHI ELECTRIC CORP6 citations70
US4841507AJun 20, 1989
Optical head for an optical recording and reproducing apparatus
MITSUBISHI ELECTRIC CORP17 citations70
US11791746B2Oct 17, 2023
Power converter with cooler and reactor with winding around a core
MITSUBISHI ELECTRIC CORP0 citations61
US10153711B2Dec 11, 2018
Electric power conversion device
MITSUBISHI ELECTRIC CORP1 citations52
US11973413B2Apr 30, 2024
Power conversion device
MITSUBISHI ELECTRIC CORP0 citations51
US9564808B2Feb 7, 2017
Electric power conversion device
MITSUBISHI ELECTRIC CORP0 citations51
US12453031B2Oct 21, 2025
Power conversion device
MITSUBISHI ELECTRIC CORP0 citations50
US11463015B2Oct 4, 2022
Power conversion apparatus
MITSUBISHI ELECTRIC CORP0 citations50
US11699959B2Jul 11, 2023
Power conversion device
MITSUBISHI ELECTRIC CORP0 citations43
US10673352B2Jun 2, 2020
Power conversion apparatus comprising cell blocks each including cascaded converter cells and a bypass circuit connected thereto
MITSUBISHI ELECTRIC CORP0 citations41
US10432101B2Oct 1, 2019
Power conversion apparatus
MITSUBISHI ELECTRIC CORP0 citations41
US10128773B2Nov 13, 2018
Electric power conversion device and electric power system
MITSUBISHI ELECTRIC CORP0 citations41
US9559612B2Jan 31, 2017
Power conversion device
MITSUBISHI ELECTRIC CORP0 citations41
US10541625B2Jan 21, 2020
Power conversion device
MITSUBISHI ELECTRIC CORP0 citations40
TOSHIBA MITSUBISHI ELEC IND
3 patentsUS10116228B2Oct 30, 2018
Converter and power conversion device manufactured using the same
TOSHIBA MITSUBISHI ELEC IND2 citations72
US10038392B2Jul 31, 2018
Inverter
TOSHIBA MITSUBISHI ELEC IND5 citations72
US10033299B2Jul 24, 2018
Converter and power conversion device including the same
TOSHIBA MITSUBISHI ELEC IND1 citations51
TOSHIBA MITSUBISHI ELECTRIC INDUSTRIAL SYSTEMS CORP
2 patentsUS9712070B2Jul 18, 2017
Power conversion device
TOSHIBA MITSUBISHI ELECTRIC INDUSTRIAL SYSTEMS CORP5 citations70
US10284111B2May 7, 2019
Power conversion apparatus having connection conductors having inductance which inhibits ripple current
TOSHIBA MITSUBISHI ELECTRIC INDUSTRIAL SYSTEMS CORP0 citations38