US Plant Patent PP23693
Greensweet XXI
Interspecific tree named ‘Greensweet XXI’
UNDER PATENT
Still under patent. Protection ends February 1, 2032.
Twenty years from the filing date would end on December 8, 2031. This patent earned 55 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP23693
- Filed
- December 8, 2011
- Granted
- July 2, 2013
- Expires
- February 1, 2032
- Assignee
- BRADFORD LOWELL GLEN
- Inventor
- BRADFORD LOWELL GLEN
Abstract
The present invention relates to an interspecific tree and more particularly to a new and distinct variety broadly characterized by a medium size, moderately vigorous, hardy, and productive tree. Being self-unfruitful, the present variety requires cross pollination from an apricot, interspecific, or plum that blooms during the mid to late season. The present variety produces a heavy bloom with a moderate amount of pollen to entice good bee activity to facilitate pollination. The fruit matures under the ecological conditions described during the first part of November, with first picking on Nov. 2, 2011. The fruit is uniformly small to medium in size, a green and red two-tone in skin color, clingstone in type, globose with a small apex hump in shape, yellow in flesh color, firm and crisp in texture, and outstandingly sweet in flavor.
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 interspecific Prunus sp. tree, substantially as illustrated and described, that is similar to ‘Plumsweet IV’ (U.S. Plant Pat. No. 16,461) interspecific, by being self-unfruitful and by producing fruit that is very sweet in flavor, juicy, clingstone in type, and two-tone in skin color, but is distinguished therefrom by producing fruit that is purely yellow in flesh color, that is globose with a small apex hump instead of oblong in shape, that is smaller in size, and that matures at least fifty days later.
Read the full patent: US Plant Patent PP23693 in full — the complete specification, every figure, and the file history.