# Charles W. Hull — Patents explained on PatentBrief

Charles W. Hull has 1 landmark patent explained in plain English on PatentBrief.

- [How 3D Printers Build Objects Layer by Layer from Liquid](https://patentbrief.org/patent/us/4575330/stereolithography-3d-printing) — granted 1986
  This patent describes the foundational method for 3D printing, where a machine builds a three-dimensional object layer by layer by hardening a liquid material with light or other energy.

**Full profile:** https://patentbrief.org/inventor/charles-w-hull

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