US Plant Patent PP8488
Canker-resistant aspen tree 70-144-30-68-1
PUBLIC DOMAIN
Patent expired March 25, 2011. 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
- PP8488
- Filed
- March 25, 1991
- Granted
- December 7, 1993
- Expires
- March 25, 2011
- Assignee
- UNIV MINNESOTA
- Inventor
- ANDERSON NEIL A; OSTRY MICHAEL E
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
An aspen tree having rapid growth, good form, aesthetic appearance, and resistance to Hypoxylon canker caused by the fungus Hypoxylon mammatum.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
We claim: 1. A new and distinct variety of aspen tree, substantially as shown and described herein, characterized particularly as to novelty by rapid growth, good form, aesthetic appearance, and resistance to Hypoxylon canker.
Read the full patent: US Plant Patent PP8488 in full — the complete specification, every figure, and the file history.