US Plant Patent PP14132
PN 15-4
Pistachio rootstock named ‘PN 15-4’
PUBLIC DOMAIN
Patent expired December 28, 2021. This plant is in the public domain — anyone may propagate and sell it.
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
- PP14132
- Filed
- December 28, 2001
- Granted
- September 16, 2003
- Expires
- December 28, 2021
- Inventor
- ANDERSON III HENRY P; PURYEAR KENNETH L
Abstract
A new and distinct variety of pistachio tree, characterized by the deep, dark red color of young foliage, the rich dark green color of mature foliage, and the rounded upright growth habit in young trees.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
We claim: 1. A new and distinct variety of pistachio tree, identified as ‘PN 15-4,’ substantially as shown and described.
Read the full patent: US Plant Patent PP14132 in full — the complete specification, every figure, and the file history.