US Plant Patent PP17890
Burnectwentythree
Nectarine tree ‘Burnectwentythree’
PUBLIC DOMAIN
Patent expired January 4, 2026. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on December 19, 2025. This patent earned 16 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP17890
- Filed
- December 19, 2005
- Granted
- July 31, 2007
- Expires
- January 4, 2026
- Assignee
- BURCHELL NURSERY INC
- Inventor
- SLAUGHTER JOHN K; GERDTS TIMOTHY J
Abstract
A new and distinct variety of nectarine tree ( Prunus persica sub species nuciperisica ), denominated varietally as ‘Burnectwentythree’, and which produces an attractively colored white-fleshed, non-melting, sub-acid, saucer-shaped, clingstone nectarine, which is mature for harvesting and shipment approximately June 12 to June 20 under ecological conditions prevailing in the San Joaquin Valley of central California.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new distinct variety of nectarine tree, substantially as illustrated and described, and which is characterized principally as to novelty by producing an attractively colored, white-fleshed, non-melting, sub-acid, saucer-shaped clingstone nectarine which is mature for harvesting and shipment approximately June 12 to June 20 under the ecological conditions prevailing in the San Joaquin Valley of central California.
Read the full patent: US Plant Patent PP17890 in full — the complete specification, every figure, and the file history.