US Plant Patent PP21164
Zanmusundown
Chrysanthemum plant named ‘Zanmusundown’
UNDER PATENT
Still under patent. Protection ends December 19, 2028.
No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.

The record
- Patent number
- PP21164
- Filed
- December 19, 2008
- Granted
- July 13, 2010
- Expires
- December 19, 2028
- Assignee
- CHRYSANTHEMUM BREEDERS ASS RES
- Inventor
- BLOM WILHELMUS BERNARDUS
Abstract
A chrysanthemum plant named ‘Zanmusundown’ characterized by its medium sized blooms with yellow ray florets and prolific branching; natural season flower date October 6–10; blooming for a period of 5 weeks.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct variety of chrysanthemum plant as described and illustrated.
Read the full patent: US Plant Patent PP21164 in full — the complete specification, every figure, and the file history.