US Plant Patent PP11840
Northern Treasure
Hybrid ash tree named ‘Northern Treasure’
PUBLIC DOMAIN
Patent expired January 20, 2019. 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
- PP11840
- Filed
- January 20, 1999
- Granted
- April 24, 2001
- Expires
- January 20, 2019
- Assignee
- UNITED KINGDOM GOVERNMENT
- Inventor
- DAVIDSON CAMPBELL G; RONALD WILBERT G
Abstract
A new and distinct Fraxinus nigra Marsh.× Fraxinus mandshurica Rupr. hybrid ash cultivar is provided which exhibits a vigorous growth habit. An attractive upright tree form with an acute branching character is exhibited. Shiny yellow-green compound leaves are formed. The flowers are perfect, seed production is low, and no production of viable seeds has been observed to date. The tree hardiness is excellent. The new cultivar is particularly well suited for the lining of streets and boulevards.
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 Fraxinus nigra Marsh.× Fraxinus mandshurica Rupr. ash tree which exhibits the following combination of characteristics: (a) a vigorous growth habit, (b) an upright form with an acute branching character, (c) shiny yellow-green pinnately compound leaves, (d) forms perfect flowers, (e) exhibits excellent hardiness, and (f) is particularly well suited for the lining of roadways; substantially as illustrated and described.
Read the full patent: US Plant Patent PP11840 in full — the complete specification, every figure, and the file history.