# Takao Isogawa — Patents explained on PatentBrief

Takao Isogawa has 1 landmark patent explained in plain English on PatentBrief.

- [How Smartphones Use Flashing Barcodes for Secure Ticketing](https://patentbrief.org/patent/us/RE45784/multi-room-wireless-audio) — granted 2015
  A system for mobile devices to display a series of flashing barcodes that a scanner reads, ensuring tickets are only used during specific valid time windows.

**Full profile:** https://patentbrief.org/inventor/takao-isogawa

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