US Plant Patent PP4530
Pear tree
PUBLIC DOMAIN
Patent expired April 24, 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
- PP4530
- Filed
- April 24, 1978
- Granted
- May 6, 1980
- Expires
- April 24, 1998
- Inventor
- HANDY GLEN 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
This invention relates to a novel variety of Callery Pear tree, distinguished by its globe shape which is normally apparent two to three years after budding, more vigorous growth rate, green waxy foliage which consistently turns to the same red to red-purple colors each autumn, thornless branches, profuse blooms, with blooms first appearing when the trees are quite young, and its sparse fruit.
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 flowering pear tree substantially as herein shown and described, characterized particularly as to novelty by a globe shaped form which is normally apparent when the tree is two to three years old, a vigorous rate of growth, thornless branched, waxy foliage, which turns consistently a red to red-purple color in the fall, profuse blooms which begin appearing when the tree is extremely young, and sparse fruit production.
Read the full patent: US Plant Patent PP4530 in full — the complete specification, every figure, and the file history.