# Rajkumar PERUMAL — Patents explained on PatentBrief

Rajkumar PERUMAL has 1 landmark patent explained in plain English on PatentBrief.

- [How Light-Activated Polymers Deliver Skin Care Ingredients](https://patentbrief.org/patent/us/12178901/dragon-xl) — granted 2024
  A chemical structure that holds onto skin-care ingredients like fragrances or cooling agents and releases them only when triggered by specific light conditions.

**Full profile:** https://patentbrief.org/inventor/rajkumar-perumal

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