# Youhei Kawahara — Patents explained on PatentBrief

Youhei Kawahara has 1 landmark patent explained in plain English on PatentBrief.

- [How to Grade Used Batteries for a Second Life](https://patentbrief.org/patent/us/9397374/secondary-battery-module-battery-information-management-device-battery-informati) — granted 2016
  This patent describes a system that reads electrical characteristics and usage history from a rechargeable battery module to determine if it's good enough to be used again for a different purpose, like energy storage.

**Full profile:** https://patentbrief.org/inventor/youhei-kawahara

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_Source: PatentBrief — https://patentbrief.org. Plain-English explanations of US patents._