US Plant Patent PP18739
Suplumthirtyeight
Plum tree named ‘Suplumthirtyeight’
UNDER PATENT
Still under patent. Protection ends October 24, 2026.
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
- PP18739
- Filed
- October 24, 2006
- Granted
- April 22, 2008
- Expires
- October 24, 2026
- Assignee
- SUN WORLD INT LLC
- Inventor
- CAIN DAVID W; BACON TERRY A
Abstract
A new and distinct plum tree variety, Prunus salicina, cv. ‘Suplumthirtyeight’ is characterized by ripening very early in the harvest season, about ten days earlier than ‘Red Beaut’ (unpatented). The new variety is further characterized by relatively large-sized fruit for the season, smooth black skin, juicy amber flesh that has a sugar content of approximately 15° brix, and early full bloom compared to ‘Black Beaut’ (unpatented). The winter chilling requirement is estimated to be approximately 300 hours at or below approximately 7.2° C.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct plum tree as herein described and illustrated.
Read the full patent: US Plant Patent PP18739 in full — the complete specification, every figure, and the file history.