# Colin D. Campbell — Patents explained on PatentBrief

Colin D. Campbell has 1 landmark patent explained in plain English on PatentBrief.

- [Chemical Compounds for Fighting Bacterial and Yeast Infections](https://patentbrief.org/patent/us/4147780/timoptic-timolol) — granted 1979
  A 1977 patent for a specific class of amino-phosphonous acid chemicals designed to act as antibiotics against bacteria and yeast.

**Full profile:** https://patentbrief.org/inventor/colin-d-campbell

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