US Plant Patent PP6539
Asjes Quercus robur
Pyramidal English oak named Asjes Quercus robur
PUBLIC DOMAIN
Patent expired December 11, 2006. 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
- PP6539
- Filed
- December 11, 1986
- Granted
- January 17, 1989
- Expires
- December 11, 2006
Abstract
A new variety of Quercus robur var. fastigiata, particularly characterized by its broad columnar body formation for about one-half of its height with the upper portion tapering inwardly in a fastigiate manner and having closely spaced, narrow branching requiring very little trimming to keep a six to one fastigate growth habit, and being thickly clothed with dark green obovate leaves which have about three to seven rounded lobes on each side, thereby providing a very unusual and excellent form for use as a landscape tree; this new English oak cultivar being especially distinguished by its resistance to mildew on its foliage.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. A new and distinct variety of Quercus robur var. fastigiata and the parts thereof, substantially as herein shown and described, and being particularly distinguished by its fast growing, densely clothed fastigiate form and its very strong resistance to mildew.
Read the full patent: US Plant Patent PP6539 in full — the complete specification, every figure, and the file history.