US Plant Patent PP15021
Sound
Chrysanthemum plant named ‘Sound’
PUBLIC DOMAIN
Patent expired August 26, 2023. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on June 2, 2023. This patent earned 85 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP15021
- Filed
- June 2, 2003
- Granted
- July 20, 2004
- Expires
- August 26, 2023
- Assignee
- YODER BROTHERS INC
- Inventor
- VANDENBERG CORNELIS P
Abstract
A distinct cultivar of Chrysanthemum plant named ‘Sound’, characterized by its upright plant habit; freely flowering habit; daisy-type inflorescences that are about 8 cm in diameter; attractive light purple-colored ray florets that resist fading and light green to bright yellow-colored disc florets; response time about 56 days; dark green-colored foliage; strong peduncles; and good postproduction longevity with inflorescences and foliage maintaining good substance and color for about 18 days in an interior environment.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
It is claimed: 1. A new and distinct cultivar of Chrysanthemum plant named ‘Sound’, as illustrated and described.
Read the full patent: US Plant Patent PP15021 in full — the complete specification, every figure, and the file history.