Inventor
KUMAKURA EIJI
JP51 patents
⚠️ This page may combine multiple inventors who share the name “KUMAKURA EIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DAIKIN IND LTD
46 patentsUS7896627B2Mar 1, 2011
Rotary type expander and fluid machinery
DAIKIN IND LTD16 citations83
US7628592B2Dec 8, 2009
Fluid machine having reduced heat input to fluid
DAIKIN IND LTD13 citations83
US7419369B2Sep 2, 2008
Displacement type expansion machine and fluid machine
DAIKIN IND LTD9 citations83
US7618242B2Nov 17, 2009
Hermetic sealed compressor
DAIKIN IND LTD11 citations82
US7434414B2Oct 14, 2008
Refrigeration apparatus
DAIKIN IND LTD8 citations73
US11535781B2Dec 27, 2022
Refrigeration cycle apparatus
DAIKIN IND LTD3 citations71
US10465684B2Nov 5, 2019
Rotary compressor
DAIKIN IND LTD2 citations67
US7918096B2Apr 5, 2011
Refrigeration system
DAIKIN IND LTD5 citations63
US7618245B2Nov 17, 2009
Fluid machine
DAIKIN IND LTD2 citations63
US12235027B2Feb 25, 2025
Refrigerant charging method
DAIKIN IND LTD0 citations62
US11994323B2May 28, 2024
Refrigerant charging method, heat source unit, and renewed refrigeration cycle apparatus
DAIKIN IND LTD0 citations62
US11988426B2May 21, 2024
Refrigerant charging method
DAIKIN IND LTD0 citations62
US11820933B2Nov 21, 2023
Refrigeration cycle apparatus
DAIKIN IND LTD1 citations62
US11493244B2Nov 8, 2022
Air-conditioning unit
DAIKIN IND LTD1 citations62
US11435118B2Sep 6, 2022
Heat source unit and refrigeration cycle apparatus
DAIKIN IND LTD1 citations62
US11209195B2Dec 28, 2021
Air conditioner with a refrigerant having a property of undergoing disproportionation
DAIKIN IND LTD0 citations62
US7674097B2Mar 9, 2010
Rotary expander
DAIKIN IND LTD3 citations62
US11920077B2Mar 5, 2024
Refrigeration cycle device for vehicle
DAIKIN IND LTD1 citations61
US7784303B2Aug 31, 2010
Expander
DAIKIN IND LTD3 citations61
US11971037B2Apr 30, 2024
Drive shaft of compressor having oil groove portion and oil sump
DAIKIN IND LTD0 citations52
US11906207B2Feb 20, 2024
Refrigeration apparatus
DAIKIN IND LTD0 citations52
US11506425B2Nov 22, 2022
Refrigeration cycle apparatus
DAIKIN IND LTD0 citations52
US11143446B2Oct 12, 2021
Refrigeration device controlling a temperature of compressor-discharged refrigerant
DAIKIN IND LTD0 citations52
US11112154B2Sep 7, 2021
Air conditioner
DAIKIN IND LTD0 citations52
US12422175B2Sep 23, 2025
Refrigerant cycle system
DAIKIN IND LTD0 citations51
US12140358B2Nov 12, 2024
Refrigerant cycle system
DAIKIN IND LTD0 citations51
US12092374B2Sep 17, 2024
Refrigerant cycle system
DAIKIN IND LTD0 citations51
US12066222B2Aug 20, 2024
Refrigeration cycle device
DAIKIN IND LTD0 citations51
US12007150B2Jun 11, 2024
Refrigeration cycle device
DAIKIN IND LTD0 citations51
US11976851B2May 7, 2024
Refrigeration cycle device
DAIKIN IND LTD0 citations51
US11959667B2Apr 16, 2024
Refrigeration cycle device
DAIKIN IND LTD0 citations51
US11739995B2Aug 29, 2023
Refrigeration cycle device
DAIKIN IND LTD0 citations51
US12590742B2Mar 31, 2026
Refrigerant recovery system
DAIKIN IND LTD0 citations50
US12472800B2Nov 18, 2025
Refrigeration cycle device for vehicle
DAIKIN IND LTD0 citations50
US12442549B2Oct 14, 2025
Air conditioner
DAIKIN IND LTD0 citations50
US12405036B2Sep 2, 2025
Heat transfer method
DAIKIN IND LTD0 citations50
US12320556B2Jun 3, 2025
Air conditioner
DAIKIN IND LTD0 citations50
US12298046B2May 13, 2025
Air conditioner
DAIKIN IND LTD0 citations50
US12253277B2Mar 18, 2025
Air conditioner
DAIKIN IND LTD0 citations50
US12163712B2Dec 10, 2024
Air conditioner
DAIKIN IND LTD0 citations50
US12163707B2Dec 10, 2024
Refrigeration cycle apparatus and four-way valve
DAIKIN IND LTD0 citations50
US12163706B2Dec 10, 2024
Refrigeration apparatus
DAIKIN IND LTD0 citations50
US12044452B2Jul 23, 2024
Heat pump device using a non-azeotropic mixture refrigerant
DAIKIN IND LTD0 citations50
US11976859B2May 7, 2024
Refrigeration cycle apparatus
DAIKIN IND LTD0 citations50
US12422171B2Sep 23, 2025
Refrigeration cycle apparatus
DAIKIN IND LTD0 citations43
US7802447B2Sep 28, 2010
Positive displacement expander
DAIKIN IND LTD0 citations42
SAKITANI KATSUMI
3 patentsOKAMOTO MASAKAZU
1 patentShowing the top 50 of 51 patents by PatentIndex Score.