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US Plant Patent PP18559

Crimson Royale

Interspecific Prunus tree named ‘Crimson Royale’

UNDER PATENT

Still under patent. Protection ends October 13, 2026.

Twenty years from the filing date would end on September 25, 2026. This patent earned 18 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP18559, the photograph of Crimson Royale printed in the patent.
Figure 1 from US Plant Patent PP18559, reproduced as printed. Photographs in a plant patent are taken by the applicant. Reproduction of the patent document is permitted; the image is shown whole and uncropped for that reason.

The record

Patent number
PP18559
Filed
September 25, 2006
Granted
March 4, 2008
Expires
October 13, 2026
Assignee
GARDNER LEITH MARIE, ZAIGER GARY NEIL, ZAIGER GRANT GENE
Inventor
ZAIGER GARY NEIL; GARDNER LEITH MARIE; ZAIGER GRANT GENE

Abstract

A new and distinct variety of interspecific tree. The following features of the tree and its fruit are characterized with the tree budded on ‘Nemaguard’ Rootstock (non-patented), grown on Handford sandy loam soil with Storie Index rating 95, in USDA Hardiness Zone 9, near Modesto, Calif., with standard commercial fruit growing practices, such as pruning, thinning, spraying, irrigation and fertilization. Its novelty consist of the following combination of desirable features: 1. Fruit with excellent flavor and eating quality. 2. Heavy and regular production of fruit. 3. Fruit with an attractive red skin color. 4. Fruit with a high average Brix of 22.8° and a good balance between acid and sugar. 5. Fruit hanging firm on the tree approximately 2 weeks after maturity. 6. Tree with vigorous, upright growth.

Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.

1. A new and distinct variety of interspecific tree, substantially as illustrated and described, characterized by its large size, vigorous, upright growth, heavy production, regular bearing of large, attractive red skin fruit with excellent flavor and eating quality; the fruit is further characterized by having firm flesh, holding first on the tree approximately 14 days after maturity (shipping ripe), with good handling and shipping quality.

Read the full patent: US Plant Patent PP18559 in full — the complete specification, every figure, and the file history.