US Plant Patent PP7552
Emer II
Chinese elm tree named `Emer II`
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
- PP7552
- Filed
- April 10, 1989
- Granted
- June 11, 1991
- Expires
- April 10, 2009
Abstract
A new and distinct variety of Ulmus parvifolia of distinct vase-shaped growth habit which resembles an American Elm in ultimate mature tree shape. The tree is characterized in having exfoliating patchy bark in attractive patterns which cover exposed bark root portions, branches over one inch in diameter and the trunk which has distinctive butresses. The tree is exceedingly durable to extremes of weather, and is resistant to common Elm pests and diseases. The tree has a dense, strong upright branching habit, with narrow but very strong branch crotch angles, and numerous thin terminal twigs which produce a dense canopy of lustrous foliage. Leaves are densely borne at the terminals of the twigs to render a full, attractive shade tree.
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, superb exfoliating bark, ease of vegetative propagation and resistance to leaf scorch, dieback symptoms, cold weather, Dutch Elm Disease and Elm Leaf Beetle.
Read the full patent: US Plant Patent PP7552 in full — the complete specification, every figure, and the file history.