US Plant Patent PP7551
Emer I
Chinese elm tree named `Emer I`
PUBLIC DOMAIN
Patent expired April 10, 2009. 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
- PP7551
- Filed
- April 10, 1989
- Granted
- June 11, 1991
- Expires
- April 10, 2009
Abstract
A new and distinct Ulmus parvifolia tree which is particularly distinguished in having an attractive, wide-spreading globe shape, being wider than it is tall, having lustrous and leathery dark green leaves, attractive puzzle-like, patchy and colorful quilt-like exfoliating bark patterns. The tree has a very dense and heavy canopy, and scaffold branch crotch angles of 60 to 70 degrees forming a strong tree which endures extremes of weather much better than most other members of the same and other shade tree species.
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 Elm as herein described and illustrated, primarily characterized by growth habit, leathery lustrous dark-green foliage, denisty of canopy, exfoliating bark, ease of vegetative propagation and resistance to leaf scorch, Dutch Elm Disease and Elm Leaf Bettle.
Read the full patent: US Plant Patent PP7551 in full — the complete specification, every figure, and the file history.