# Greg S. Blank — Patents explained on PatentBrief

Greg S. Blank has 1 landmark patent explained in plain English on PatentBrief.

- [How Genentech Purifies Therapeutic Antibodies for Cancer Treatment](https://patentbrief.org/patent/us/6339142/rituxan-rituximab) — granted 2002
  A method for refining mixtures of anti-HER2 antibodies to ensure that harmful acidic variants remain below 25 percent of the total composition.

**Full profile:** https://patentbrief.org/inventor/greg-s-blank

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