US Plant Patent PP7222
Magnificent Magenta Maple
PUBLIC DOMAIN
Patent expired September 6, 2008. 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
- PP7222
- Filed
- September 6, 1988
- Granted
- April 24, 1990
- Expires
- September 6, 2008
No cultivar name of record
This patent does not name the plant. Through the 1980s and early 1990s that was still common: naming every new cultivar only became standard practice as plants began to be marketed under brand names. The grant identifies this one by its number and by a written description instead.
Nothing here is missing from our records: the patent itself states no name. Where one exists we show it, and we do not invent one.
Abstract
This invention is of a new and unique variety of Acer rubrum, the red maple or swamp maple, which I have now named `Magnificent Magenta.` I discovered the parent tree, a member of Acer rubrum, growing at the end of a cultivated boundary line row of trees along the eastern property line of a residence in Wathena, Kans. The tree is monecious, has leaves of widely varied size and shape, a rounded crown, and an unusual and attractive fall coloration which is long lasting before leaf fall.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. A new and unique variety of red maple, Acer rubrum, as described and illustrated, being particularly distinguished as to novelty by a combination of the shape of the tree which exhibits a desirable well-shaped, compact, symmetrical oval crown in contrast to the species which is often loosely shaped and much less compact, and a brillant, true magenta fall leaf color quite unlike that of other members of the species and any patented variety; the vivid magenta exhibited during most of the fall leaf color period dictates the name I have chosen for this tree: `Magnificent Magenta Maple.`
Read the full patent: US Plant Patent PP7222 in full — the complete specification, every figure, and the file history.