# M Hall Charles — Patents explained on PatentBrief

M Hall Charles has 1 landmark patent explained in plain English on PatentBrief.

- [How Charles Hall Invented Modern Aluminum Production](https://patentbrief.org/patent/us/400664/hall-process-aluminum-smelting) — granted 1889
  This 1889 patent describes the Hall-Héroult process, which uses electricity to extract pure aluminum from its ore, making the metal affordable for everyone.

**Full profile:** https://patentbrief.org/inventor/m-hall-charles

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