# William A. Brastad — Patents explained on PatentBrief

William A. Brastad has 1 landmark patent explained in plain English on PatentBrief.

- [How Microwave Crisping Sleeves Work](https://patentbrief.org/patent/us/4267420/microwave-popcorn-susceptor) — granted 1981
  General Mills' 1978 patent on using a thin, metal-coated plastic wrap that converts microwave energy into intense surface heat to crisp and brown food like Hot Pockets.

**Full profile:** https://patentbrief.org/inventor/william-a-brastad

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