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US Plant Patent PP28441

Blackred XXI

Plum tree named ‘Blackred XXI’

UNDER PATENT

Still under patent. Protection ends January 14, 2036.

Twenty years from the filing date would end on December 11, 2035. This patent earned 34 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP28441, the photograph of Blackred XXI printed in the patent.
Figure 1 from US Plant Patent PP28441, 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
PP28441
Filed
December 11, 2015
Granted
September 26, 2017
Expires
January 14, 2036
Assignee
BRADFORD LOWELL GLEN, QUISENBERRY JON M
Inventor
BRADFORD LOWELL GLEN; QUISENBERRY JON M

Abstract

The present invention relates to a plum tree and more particularly to a new and distinct variety broadly characterized by a large size, vigorous, hardy, and very productive tree. Being self-unfruitful, the present variety requires cross pollination from an apricot, plum, or interspecific variety that blooms during the mid to late season, such as ‘September Yummy’ plum (U.S. Plant Pat. No. 14,220). The present variety's abundance of blossoms and pollen entices strong bee activity to facilitate pollination. The fruit matures under the ecological conditions described in mid August, with first picking on Aug. 12, 2015, and can hang firm on the tree for up to thirty days. The fruit is medium to large in size, almost entirely black in skin color, clingstone in type, somewhat oblate in shape, red and yellow in flesh color, juicy, very sweet, and excellent in flavor.

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 plum tree, Prunus salicina , substantially as illustrated and described that is most similar to ‘Blackred XII’ (U.S. Plant Pat. No. 20,892) interspecific tree by being self-unfruitful and by producing fruit that is mostly black in skin color, red and yellow in flesh color, and sweet in flavor, but is distinguished therefrom by blooming about 5 days earlier and by producing fruit that is juicier, that is crisp and melting instead of tough and meaty in texture, that is more heat resistant, and that ripens about fifteen days earlier.

Read the full patent: US Plant Patent PP28441 in full — the complete specification, every figure, and the file history.