Inventor
HAYASHI TETSUTARO
JP20 patents
⚠️ This page may combine multiple inventors who share the name “HAYASHI TETSUTARO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYOTA MOTOR CO LTD
10 patentsUS10971720B2Apr 6, 2021
Positive electrode active material, lithium ion secondary battery, and method of producing positive electrode active material
TOYOTA MOTOR CO LTD0 citations60
US11967700B2Apr 23, 2024
Non-aqueous electrolyte secondary battery including a positive electrode active substance containing a lithium composite oxide porous particle and a rock salt layer
TOYOTA MOTOR CO LTD0 citations59
US11962000B2Apr 16, 2024
Non-aqueous electrolyte secondary battery including a positive electrode active substance containing a lithium composite oxide porous particle having voids
TOYOTA MOTOR CO LTD0 citations59
US11777084B2Oct 3, 2023
Non-aqueous electrolyte secondary battery including a positive electrode active substance containing a lithium composite oxide porous particle having voids
TOYOTA MOTOR CO LTD0 citations59
US11374210B2Jun 28, 2022
Positive electrode material
TOYOTA MOTOR CO LTD0 citations50
US11018335B2May 25, 2021
Positive electrode for lithium ion secondary battery and manufacturing method thereof
TOYOTA MOTOR CO LTD0 citations50
US12009506B2Jun 11, 2024
Nonaqueous electrolyte secondary battery
TOYOTA MOTOR CO LTD0 citations49
US11923534B2Mar 5, 2024
Nonaqueous electrolyte secondary battery including a positive electrode active substance containing a lithium composite oxide porous particle having voids
TOYOTA MOTOR CO LTD0 citations49
US11757085B2Sep 12, 2023
Nonaqueous electrolyte secondary battery
TOYOTA MOTOR CO LTD0 citations49
US10840509B2Nov 17, 2020
Positive electrode active material, and lithium secondary battery using same
TOYOTA MOTOR CO LTD0 citations40
SUMITOMO METAL MINING CO
8 patentsUS9991505B2Jun 5, 2018
Positive-electrode material for nonaqueous-electrolyte secondary battery, method for manufacturing the same, and nonaqueous-electrolyte secondary battery using said positive-electrode material
SUMITOMO METAL MINING CO2 citations72
US12015154B2Jun 18, 2024
Cathode active material for lithium ion secondary battery and lithium ion secondary battery
SUMITOMO METAL MINING CO0 citations60
US10090514B2Oct 2, 2018
Positive-electrode material for nonaqueous-electrolyte secondary battery, method for manufacturing the same, and nonaqueous-electrolyte secondary battery using said positive-electrode material
SUMITOMO METAL MINING CO0 citations51
US12315924B2May 27, 2025
Positive electrode active material for lithium ion secondary battery and lithium ion secondary battery
SUMITOMO METAL MINING CO0 citations50
US12562383B2Feb 24, 2026
Positive electrode active material for lithium ion secondary battery and lithium ion secondary battery
SUMITOMO METAL MINING CO0 citations49
US12381218B2Aug 5, 2025
Positive electrode active material for lithium ion secondary battery and lithium ion secondary battery
SUMITOMO METAL MINING CO0 citations48
US12315916B2May 27, 2025
Positive electrode active material for lithium ion secondary battery and lithium ion secondary battery
SUMITOMO METAL MINING CO0 citations48
US11695116B2Jul 4, 2023
Method for manufacturing cathode active material for lithium ion secondary battery
SUMITOMO METAL MINING CO0 citations48