Inventor · disambiguated record
Eiji Kumakura
Also filed as: KUMAKURA EIJI
50 granted patents·39 pending applications·93 citations·filing 2003–2025
97Inventor score
Top patents by PatentIndex Score
89 records- 0192US11535781B2Refrigeration cycle apparatusDAIKIN IND LTD·Filed 2018·Granted Dec 27, 2022·3 cites·13 claims
- 0290US7628592B2Fluid machine having reduced heat input to fluidDAIKIN IND LTD·Filed 2005·Granted Dec 8, 2009·13 cites·12 claims
- 0383US11493244B2Air-conditioning unitDAIKIN IND LTD·Filed 2020·Granted Nov 8, 2022·1 cites·10 claims
- 0482US11820933B2Refrigeration cycle apparatusDAIKIN IND LTD·Filed 2020·Granted Nov 21, 2023·1 cites·5 claims
- 0582US11435118B2Heat source unit and refrigeration cycle apparatusDAIKIN IND LTD·Filed 2020·Granted Sep 6, 2022·1 cites·18 claims
- 0682US2023097829A1Refrigeration cycle apparatusDAIKIN IND LTD·Filed 2022·Application pending·0 cites
- 0781US11920077B2Refrigeration cycle device for vehicleDAIKIN IND LTD·Filed 2019·Granted Mar 5, 2024·1 cites·12 claims
- 0881US2025115796A1Refrigeration cycle apparatusDAIKIN IND LTD·Filed 2024·Application pending·0 cites
- 0979US8122735B2Refrigerating apparatusSAKITANI KATSUMI·Filed 2007·Granted Feb 28, 2012·7 cites·18 claims
- 1077US11971037B2Drive shaft of compressor having oil groove portion and oil sumpDAIKIN IND LTD·Filed 2022·Granted Apr 30, 2024·0 cites·6 claims
- 1175US7918096B2Refrigeration systemDAIKIN IND LTD·Filed 2007·Granted Apr 5, 2011·5 cites·8 claims
- 1274US2020333051A1Refrigeration cycleDAIKIN IND LTD·Filed 2018·Application pending·0 cites
- 1374US2021163804A1Refrigeration cycle apparatusDAIKIN IND LTD·Filed 2018·Application pending·0 cites
- 1474US2021003323A1Refrigeration cycle apparatusDAIKIN IND LTD·Filed 2018·Application pending·0 cites
- 1574US2020333049A1Refrigeration apparatusDAIKIN IND LTD·Filed 2018·Application pending·0 cites
- 1674US2020309437A1Refrigeration cycle apparatus and method of determining refrigerant enclosure amount in refrigeration cycle apparatusDAIKIN IND LTD·Filed 2018·Application pending·0 cites
- 1774US2021095897A1Heat source unit and refrigeration cycle apparatusDAIKIN IND LTD·Filed 2018·Application pending·0 cites
- 1874US2021164703A1Air-conditioning unitDAIKIN IND LTD·Filed 2018·Application pending·0 cites
- 1972US12472800B2Refrigeration cycle device for vehicleDAIKIN IND LTD·Filed 2023·Granted Nov 18, 2025·0 cites·11 claims
- 2072US12422171B2Refrigeration cycle apparatusDAIKIN IND LTD·Filed 2023·Granted Sep 23, 2025·0 cites·9 claims
- 2172US11994323B2Refrigerant charging method, heat source unit, and renewed refrigeration cycle apparatusDAIKIN IND LTD·Filed 2019·Granted May 28, 2024·0 cites·16 claims
- 2272US11988426B2Refrigerant charging methodDAIKIN IND LTD·Filed 2019·Granted May 21, 2024·0 cites·20 claims
- 2372US10465684B2Rotary compressorDAIKIN IND LTD·Filed 2015·Granted Nov 5, 2019·2 cites·5 claims
- 2472US7896627B2Rotary type expander and fluid machineryDAIKIN IND LTD·Filed 2004·Granted Mar 1, 2011·16 cites·15 claims
- 2571US12235027B2Refrigerant charging methodDAIKIN IND LTD·Filed 2019·Granted Feb 25, 2025·0 cites·17 claims
- 2671US8312732B2Refrigerating apparatusSAKITANI KATSUMI·Filed 2007·Granted Nov 20, 2012·4 cites·15 claims
- 2771US2022221202A1Heat treatment systemDAIKIN IND LTD·Filed 2022·Application pending·0 cites
- 2871US2025224165A1Refrigeration cycle apparatusDAIKIN IND LTD·Filed 2025·Application pending·0 cites
- 2970US7784303B2ExpanderDAIKIN IND LTD·Filed 2005·Granted Aug 31, 2010·3 cites·7 claims
- 3070US2022220353A1Air conditioning apparatusDAIKIN IND LTD·Filed 2022·Application pending·0 cites
- 3169US12044452B2Heat pump device using a non-azeotropic mixture refrigerantDAIKIN IND LTD·Filed 2023·Granted Jul 23, 2024·0 cites·20 claims
- 3269US7674097B2Rotary expanderDAIKIN IND LTD·Filed 2005·Granted Mar 9, 2010·3 cites·7 claims
- 3368US7618242B2Hermetic sealed compressorDAIKIN IND LTD·Filed 2003·Granted Nov 17, 2009·11 cites·9 claims
- 3466US12320556B2Air conditionerDAIKIN IND LTD·Filed 2022·Granted Jun 3, 2025·0 cites·9 claims
- 3566US8245528B2Fluid machineSAKITANI KATSUMI·Filed 2007·Granted Aug 21, 2012·3 cites·4 claims
- 3665US11976859B2Refrigeration cycle apparatusDAIKIN IND LTD·Filed 2023·Granted May 7, 2024·0 cites·20 claims
- 3765US2025043787A1Method using refrigerant for compressor, compressor, and refrigeration cycle apparatusDAIKIN IND LTD·Filed 2024·Application pending·0 cites
- 3865US2019368493A1CompressorDAIKIN IND LTD·Filed 2018·Application pending·0 cites
- 3964US2023132359A2Refrigeration cycle apparatusDAIKIN IND LTD·Filed 2019·Application pending·0 cites
- 4063US12298046B2Air conditionerDAIKIN IND LTD·Filed 2022·Granted May 13, 2025·0 cites·7 claims
- 4163US2025012477A1Air conditioning unit and packaging unitDAIKIN IND LTD·Filed 2024·Application pending·0 cites
- 4263US2024218226A1Refrigeration cycle device for vehicleDAIKIN IND LTD·Filed 2024·Application pending·0 cites
- 4363US2024019184A1Refrigerant recovery system and refrigerant filling systemDAIKIN IND LTD·Filed 2023·Application pending·0 cites
- 4462US12405036B2Heat transfer methodDAIKIN IND LTD·Filed 2023·Granted Sep 2, 2025·0 cites·20 claims
- 4562US12163706B2Refrigeration apparatusDAIKIN IND LTD·Filed 2022·Granted Dec 10, 2024·0 cites·11 claims
- 4661US7419369B2Displacement type expansion machine and fluid machineDAIKIN IND LTD·Filed 2003·Granted Sep 2, 2008·9 cites·9 claims
- 4761US2024019177A1Heat pump apparatusDAIKIN IND LTD·Filed 2023·Application pending·0 cites
- 4860US12140358B2Refrigerant cycle systemDAIKIN IND LTD·Filed 2020·Granted Nov 12, 2024·0 cites·3 claims
- 4960US11209195B2Air conditioner with a refrigerant having a property of undergoing disproportionationDAIKIN IND LTD·Filed 2018·Granted Dec 28, 2021·0 cites·11 claims
- 5060US2024019178A1Refrigeration cycle apparatusDAIKIN IND LTD·Filed 2023·Application pending·0 cites
Showing the top 50 of 89 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →