# Frederick James Primus — Patents explained on PatentBrief

Frederick James Primus has 1 landmark patent explained in plain English on PatentBrief.

- [Using Radioactive Antibodies to Find Tumors Inside the Body](https://patentbrief.org/patent/us/3927193/ivermectin) — granted 1975
  A 1973 method for finding cancer tumors by injecting patients with radioactive antibodies that attach to tumor-specific proteins, allowing doctors to scan for their location.

**Full profile:** https://patentbrief.org/inventor/frederick-james-primus

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