US Plant Patent PP7217
Crimson Prince
Acer palmatum "Crimson Prince"
PUBLIC DOMAIN
Patent expired June 13, 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
- PP7217
- Filed
- June 13, 1988
- Granted
- April 10, 1990
- Expires
- June 13, 2008
Abstract
A seedling of the variety Acer palmatum "Bloodgood" (an unpatented variety) noticeable for its vigorous growth, deeper red color in the summer, greater height of growth as compared with other "Bloodgood" seedlings of the same age, cold hardiness and non-susceptibility to tip die-back of the summer growth, from cold winters.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. An Acer palmatum tree substantially as herein shown and described, characterized particularly as to novelty by its deeper red summer color, stronger growth, growing one third taller and broader than sister "Bloodgood" grafts of the same age, greater cold hardiness than other purple leafed Acer palmatum clones and resistance to injury by cold winters as compared with other clones than suffer from considerable tip die-back of a previous summer's growth.
Read the full patent: US Plant Patent PP7217 in full — the complete specification, every figure, and the file history.