Inventor
SHOJI HIDEKI
JP22 patents
Patents
22 patentsUS6181100B1Jan 30, 2001
Power supply apparatus for charging and discharging battery with high energy efficiency
TOYO SYSTEM CO LTD84 citations97
US6404168B1Jun 11, 2002
Auxiliary battery for portable devices
TOYO SYSTEM CO LTD66 citations95
US5831507ANov 3, 1998
Dual-functional fuse unit that is responsive to electric current and ambient temperature
TOYO SYSTEM CO LTD102 citations95
US7974797B2Jul 5, 2011
Method and apparatus for confirming the charge amount and degradation state of a battery, a storage medium, an information processing apparatus, and an electronic apparatus
TOYO SYSTEM CO LTD18 citations92
US7429849B2Sep 30, 2008
Method and apparatus for confirming the charge amount and degradation state of a battery, a storage medium, an information processing apparatus, and an electronic apparatus
TOYO SYSTEM CO LTD17 citations92
US6140905AOct 31, 2000
Electrically conductive contact pin having a temperature fuse function
TOYO SYSTEM CO LTD15 citations73
US9312770B2Apr 12, 2016
Power converter
TOYO SYSTEM CO LTD3 citations70
US9112412B2Aug 18, 2015
Full-bridge power converter
TOYO SYSTEM CO LTD2 citations62
US11085971B2Aug 10, 2021
Degradation state determination device and degradation state determination method
TOYO SYSTEM CO LTD1 citations61
US12169225B2Dec 17, 2024
Secondary battery inspection method and secondary battery inspection device
TOYO SYSTEM CO LTD0 citations50
US12092696B2Sep 17, 2024
Simulated battery construction method and simulated battery construction device
TOYO SYSTEM CO LTD0 citations50
US11977128B2May 7, 2024
Used battery unit depository
TOYO SYSTEM CO LTD0 citations50
US12449480B2Oct 21, 2025
Battery test device and battery charge testing method
TOYO SYSTEM CO LTD0 citations48
US12553954B2Feb 17, 2026
Battery state determination method and battery state determination device
TOYO SYSTEM CO LTD0 citations47
US12476478B2Nov 18, 2025
Battery charge/discharge testing device and battery discharge power control method
TOYO SYSTEM CO LTD0 citations47
US12072385B2Aug 27, 2024
Charge and discharge testing device
TOYO SYSTEM CO LTD0 citations47
US12306257B2May 20, 2025
Battery performance evaluation device, electronic apparatus, charger, and battery performance evaluation method
TOYO SYSTEM CO LTD0 citations46
US11774511B2Oct 3, 2023
Battery performance evaluation method and battery performance evaluation device
TOYO SYSTEM CO LTD0 citations46
US11933857B2Mar 19, 2024
Battery residual value determination system
TOYO SYSTEM CO LTD0 citations42
US11630160B2Apr 18, 2023
Battery residual value display device
TOYO SYSTEM CO LTD0 citations42
US10234830B2Mar 19, 2019
Feedback control device
TOYO SYSTEM CO LTD0 citations32
US9391573B2Jul 12, 2016
Digital AGC control method and feedback control apparatus
TOYO SYSTEM CO LTD0 citations32