Inventor
KAWASHIMA REIJI
JP28 patents
⚠️ This page may combine multiple inventors who share the name “KAWASHIMA REIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DAIKIN IND LTD
26 patentsUS6137700AOct 24, 2000
Converter with a high power factor using a DC center point voltage
DAIKIN IND LTD91 citations95
US7187566B2Mar 6, 2007
Three-phase rectifier
DAIKIN IND LTD18 citations89
US7667941B2Feb 23, 2010
Power supply circuit protecting method and apparatus for the same
DAIKIN IND LTD9 citations83
US11577186B2Feb 14, 2023
Active filter system and air conditioning device
DAIKIN IND LTD2 citations73
US10651651B2May 12, 2020
Device with built-in active filter
DAIKIN IND LTD3 citations73
US10110113B2Oct 23, 2018
Active filter and AC-DC conversion device
DAIKIN IND LTD2 citations73
US10511220B2Dec 17, 2019
Control device for active filter
DAIKIN IND LTD4 citations72
US10447191B2Oct 15, 2019
Power conversion device
DAIKIN IND LTD2 citations72
US10048655B2Aug 14, 2018
Control device outputting a control input to a system based on an observable amount obtained from the system
DAIKIN IND LTD2 citations72
US10903755B2Jan 26, 2021
Power conversion device
DAIKIN IND LTD4 citations66
US12249906B2Mar 11, 2025
Air conditioner
DAIKIN IND LTD0 citations62
US12155212B2Nov 26, 2024
Power control system and device
DAIKIN IND LTD0 citations61
US8030661B2Oct 4, 2011
Power conversion apparatus
DAIKIN IND LTD2 citations61
US12438440B2Oct 7, 2025
Noise reduction circuit, power conversion device, and refrigeration apparatus
DAIKIN IND LTD1 citations60
US8008886B2Aug 30, 2011
Power converter
DAIKIN IND LTD2 citations60
US11750112B2Sep 5, 2023
Inverter device including a bootstrap circuit
DAIKIN IND LTD0 citations58
US11788752B2Oct 17, 2023
Power source quality management system and air conditioning apparatus
DAIKIN IND LTD0 citations52
US11374487B2Jun 28, 2022
Power source quality management system and air conditioner
DAIKIN IND LTD0 citations52
US11201470B2Dec 14, 2021
Power-source power factor control system, phase modifying apparatus, and active filter apparatus
DAIKIN IND LTD0 citations52
US12531416B2Jan 20, 2026
Power control system and heat pump system
DAIKIN IND LTD0 citations51
US12224678B2Feb 11, 2025
Power converter and heat pump system provided therewith
DAIKIN IND LTD0 citations51
US9835364B2Dec 5, 2017
Active filter control device
DAIKIN IND LTD1 citations51
US12095434B2Sep 17, 2024
Current distortion reduction apparatus
DAIKIN IND LTD0 citations48
US12567795B2Mar 3, 2026
Noise reduction circuitry, load system and power conversion device
DAIKIN IND LTD0 citations47
US12355379B2Jul 8, 2025
Power conversion system
DAIKIN IND LTD0 citations45
US10797584B2Oct 6, 2020
Active filter device, air conditioning device, and air conditioning system
DAIKIN IND LTD0 citations41