US Plant Patent PP6756
Royal Diamond
Plum tree
PUBLIC DOMAIN
Patent expired April 13, 2007. 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
- PP6756
- Filed
- April 13, 1987
- Granted
- April 25, 1989
- Expires
- April 13, 2007
Abstract
The present invention relates to a plum tree and more particularly to a new and distinct variety broadly characterized by a very upright, simi-open tree which bears a large, symmetrical, firm fruit of sweet taste and yellow-amber flesh and an attractive blue-black skin color. The new variety generally resembles the Friar (unpatented) variety, but under the ecological conditions described, generally ripens during the last two weeks of August, three to four weeks later than the Friar variety -- a late date for a mid-season plum. The fruit is of good eating and keeping quality and is suitable for local and long distance markets.
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 plum tree substantially as described and illustrated, which generally resembles the Friar (unpatented) variety in the very upright growth of the tree and by some characteristics of its fruit, but can be readily distinguished therefrom and is an improvement thereon by having a bloom timing which is later than the Friar and Santa Rosa varieties and resembles the Simka (U.S. Plant Pat. No. 1,882) variety, and by ripening of its fruit three to four weeks later than the Friar variety.
Read the full patent: US Plant Patent PP6756 in full — the complete specification, every figure, and the file history.