Inventor · disambiguated record
Yafei Liu
Also filed as: LIU YAFEI
29 granted patents·27 pending applications·105 citations·filing 2005–2025
95Inventor score
Files withBEIJING EASPRING MAT TECH CO LTD33UNIV XIAN SHIYOU4GUANGDONG MEIHONG DENTAL TECH CO LTD3HOFFMANN LA ROCHE3GUANGDONG MEIHONG INDUSTRIAL TECH CO LTD2
Top patents by PatentIndex Score
56 records- 0193US11207162B1Electric toothbrush headGUANGDONG MEIHONG INDUSTRIAL TECH CO LTD·Filed 2021·Granted Dec 28, 2021·6 cites·5 claims
- 0292US11984591B1Sodium-containing oxide positive electrode material and preparation method therefor and use thereof, and positive electrode plate and use thereofBEIJING EASPRING MAT TECH CO LTD·Filed 2023·Granted May 14, 2024·2 cites·20 claims
- 0391US11837722B2Positive electrode material for lithium ion battery and preparation method therefor, and lithium ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2022·Granted Dec 5, 2023·1 cites·20 claims
- 0489US11996560B1Positive electrode material of lithium-ion battery and preparation method thereforBEIJING EASPRING MAT TECH CO LTD·Filed 2023·Granted May 28, 2024·1 cites·6 claims
- 0588USD982905SToothbrush headGUANGDONG MEIHONG DENTAL TECH CO LTD·Filed 2023·Granted Apr 11, 2023·13 cites·1 claims
- 0685USD950959SElectric toothbrush headGUANGDONG MEIHONG INDUSTRIAL TECH CO LTD·Filed 2021·Granted May 10, 2022·12 cites·1 claims
- 0784USD977256SElectric toothbrushGUANGDONG MEIHONG DENTAL TECH CO LTD·Filed 2022·Granted Feb 7, 2023·10 cites·1 claims
- 0881US12113214B2Positive electrode material and preparation method and use therefor, lithium-ion battery positive electrode pole piece, and lithium-ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2023·Granted Oct 8, 2024·0 cites·8 claims
- 0979US11984586B1Surface-coated positive electrode material and preparation method therefor, and lithium ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2023·Granted May 14, 2024·0 cites·20 claims
- 1076US2025105273A1Lithium-rich manganese oxide cathode material, preparation method, positive electrode plate, and lithium-ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2024·Application pending·0 cites
- 1176US2025309258A1Multi-element cathode material, preparation method thereof, positive electrode plate, and lithium-ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2025·Application pending·0 cites
- 1275US2024421302A1Olivine composite cathode material, preparation method and application thereof, and lithium-ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2024·Application pending·0 cites
- 1375US2025112234A1Lithium-ion battery cathode material, preparation method thereof, and lithium-ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2024·Application pending·0 cites
- 1475US2025019257A1Precursor of lithium-containing oxide cathode material, lithium-containing oxide cathode material, preparation methods therefor and use thereof, and positive electrode plate and use thereofBEIJING EASPRING MAT TECH CO LTD·Filed 2024·Application pending·0 cites
- 1574USD978776SSet of wheels for a delivery robot chassisNINEBOT BEIJING TECH CO LTD·Filed 2022·Granted Feb 21, 2023·5 cites·1 claims
- 1674US9453829B2Soil property test deviceUNIV SHIJIAZHUANG TIEDAO·Filed 2014·Granted Sep 27, 2016·4 cites·18 claims
- 1774US2025329728A1Cathode material, preparation method therefor, and lithium-ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2025·Application pending·0 cites
- 1873USD900866SDisplay screen of a wearable device with transitional graphical user interfaceSHANGHAI YUSHANZHI INFORMATION TECH COMPANY LIMITED·Filed 2019·Granted Nov 3, 2020·13 cites·1 claims
- 1973US2023268498A1Positive electrode material and preparation method and use therefor, lithium-ion battery positive electrode pole piece, and lithium-ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2021·Application pending·0 cites
- 2072US11984590B2Positive electrode material for lithium ion battery and preparation method thereforBEIJING EASPRING MAT TECH CO LTD·Filed 2023·Granted May 14, 2024·0 cites·11 claims
- 2172US11955635B1Single crystal multi-element positive electrode material, preparation method therefor, and lithium ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2023·Granted Apr 9, 2024·0 cites·20 claims
- 2272US2025206613A1Olivine-type cathode material, preparation method thereof, and lithium-ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2024·Application pending·0 cites
- 2372US2025132384A1Solid electrolyte material, solid electrolyte, cathode material and preparation method thereof, and sodium-ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2024·Application pending·0 cites
- 2471US12338136B2Positive electrode material, preparation method therefor, and application thereofBEIJING EASPRING MAT TECH CO LTD·Filed 2023·Granted Jun 24, 2025·0 cites·15 claims
- 2571USD1013751SDelivery robot chassisNINEBOT BEIJING TECH CO LTD·Filed 2022·Granted Feb 6, 2024·4 cites·1 claims
- 2671US2023369584A1Positive electrode material, preparation method therefor and use thereof, and lithium ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2023·Application pending·0 cites
- 2770USD858561SDisplay screen of a wearable device with a transitional graphical user interfaceSHANGHAI YUSHANZHI INFORMATION TECH COMPANY LIMITED·Filed 2016·Granted Sep 3, 2019·13 cites·1 claims
- 2869US2024421296A1Sodium-ion cathode material, preparation method and use thereof, sodium-ion battery, sodium-ion battery pack, and deviceBEIJING EASPRING MAT TECH CO LTD·Filed 2024·Application pending·0 cites
- 2969US2025183294A1Positive electrode active material for lithium secondary battery and preparation method thereforBEIJING EASPRING MAT TECH CO LTD·Filed 2025·Application pending·0 cites
- 3069US2025122097A1Cathode material, preparation method thereof, and lithium-ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2024·Application pending·0 cites
- 3167USD858563SDisplay screen of a wearable device with a transitional graphical user interfaceMOBVOI INFORMATION TECH COMPANY LIMITED·Filed 2016·Granted Sep 3, 2019·12 cites·1 claims
- 3267US9689121B2Piston-type variable speed control deviceSHI JIANJUN·Filed 2013·Granted Jun 27, 2017·9 cites·10 claims
- 3367US2025128962A1Agglomeration-like multi-element cathode material, preparation method therefor, and lithium-ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2024·Application pending·0 cites
- 3466US2025019259A1Multi-element cathode material and preparation method thereof, lithium-ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2024·Application pending·0 cites
- 3566US2025074913A1Pyrazole derivatives as sting agonistsHOFFMANN LA ROCHE·Filed 2024·Application pending·0 cites
- 3665US12294079B2Lithium-manganese rich material, preparation method therefor and use thereofBEIJING EASPRING MAT TECH CO LTD·Filed 2020·Granted May 6, 2025·0 cites·15 claims
- 3765US12071356B2Positive electrode material having multi-cavity structure and preparation method therefor, and lithium ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2022·Granted Aug 27, 2024·0 cites·10 claims
- 3865US2025059678A1Single crystal multi-element cathode material, preparation method of the same, and lithium-ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2024·Application pending·0 cites
- 3964US12162752B2Lithium iron manganese phosphate precursor, lithium iron manganese phosphate positive electrode material and preparation method therefor, electrode material, electrode, and lithium-ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2023·Granted Dec 10, 2024·0 cites·16 claims
- 4064US2023174389A1Multi-element positive electrode material, and preparation method therefor and application thereofBEIJING EASPRING MAT TECH CO LTD·Filed 2022·Application pending·0 cites
- 4163US11958757B2Lithium-manganese-rich material, preparation method for same, and applications thereofBEIJING EASPRING MAT TECH CO LTD·Filed 2021·Granted Apr 16, 2024·0 cites·14 claims
- 4262US2024204173A1Positive electrode material and preparation method thereforBEIJING EASPRING MAT TECH CO LTD·Filed 2022·Application pending·0 cites
- 4361US11607299B1Electric toothbrush replacement headGUANGDONG MEIHONG DENTAL TECH CO LTD·Filed 2022·Granted Mar 21, 2023·0 cites·13 claims
- 4461US2025309264A1Lithium manganese iron phosphate cathode material, preparation method therefor, and lithium-ion battery thereofBEIJING EASPRING MAT TECH CO LTD·Filed 2025·Application pending·0 cites
- 4559US12157679B2Single-crystal-type multi-element positive electrode material, and preparation method therefor and application thereofBEIJING EASPRING MAT TECH CO LTD·Filed 2022·Granted Dec 3, 2024·0 cites·10 claims
- 4658US11662306B2Supercritical carbon dioxide state monitoring and control system based on infrared spectrum characteristic analysisUNIV ZHEJIANG·Filed 2021·Granted May 30, 2023·0 cites·9 claims
- 4758US2025309257A1Sodium ion battery cathode material and preparation method thereof and sodium ion batteryBEIJING EASPRING MAT TECH CO LTD·Filed 2025·Application pending·0 cites
- 4851US7658288B2Bisulfite conversion reagentAPPLIED BIOSYSTEMS LLC·Filed 2005·Granted Feb 9, 2010·0 cites·20 claims
- 4948US2022340597A1Hexahydro-1h-pyrazino[1,2-a]pyrazine compounds for the treatment of autoimmune diseaseHOFFMANN LA ROCHE·Filed 2020·Application pending·0 cites
- 5046US2021395239A1Heterocyclyl compounds for the treatment of autoimmune diseaseHOFFMANN LA ROCHE·Filed 2019·Application pending·0 cites
Showing the top 50 of 56 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →