US Plant Patent PP4654
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
- PP4654
- Filed
- August 21, 1978
- Granted
- February 24, 1981
- 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 sugar maple of columnar form and exceedingly fast growth. The leaves have a less leathery appearance than other known columnar sugar maple trees which gives the tree an overall distinctive cleaner and healthier appearance. The leaves are less subject to scorching which adds to the healthy appearance of the tree particularly late in the season before the leaves change to their bright yellow coloration in the 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 distinct variety of Acer saccharum substantially as herein shown and described, characterized particularly by its columnar shape vigorous growth faster than other known columnar sugar maples, less leathery appearance of the leaves and cleaner and healthier appearance late in the season due to less scorching of the leaves.
Read the full patent: US Plant Patent PP4654 in full — the complete specification, every figure, and the file history.