US Plant Patent PP4534
Sugar maple
PUBLIC DOMAIN
Patent expired August 21, 1998. 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
- PP4534
- Filed
- August 21, 1978
- Granted
- May 13, 1980
- Expires
- August 21, 1998
- Assignee
- SIEBENTHALER COMPANY
- Inventor
- SIEBENTHALER JOHN D
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
A distinctive variety of sugar maple characterized by rapid growth, hardiness, uprightness, and conical shape of the tree at maturity, as well as a distinctive coloration which changes from a light green in the Autumn to a variety of mottling of gold, orange and scarlet turning to blood red.
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 Acer sacchrum substantially as herein shown and described, characterized particularly by its rapid growth, hardiness, uprightness and conical shape of the tree at maturity and the distinctive coloration of the foliage.
Read the full patent: US Plant Patent PP4534 in full — the complete specification, every figure, and the file history.