# Takayuki Nagaya — Patents explained on PatentBrief

Takayuki Nagaya has 1 landmark patent explained in plain English on PatentBrief.

- [How the QR Code Works](https://patentbrief.org/patent/us/5726435/qr-code-two-dimensional-barcode) — granted 1998
  The 1995 patent by Toyota Central R&D Labs that invented the QR code, using three distinct corner squares with a unique 1:1:3:1:1 pixel ratio to let scanners instantly find and read the code from any angle.

**Full profile:** https://patentbrief.org/inventor/takayuki-nagaya

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