US Plant Patent PP4593
Poinsettia
PUBLIC DOMAIN
Patent expired January 10, 1999. 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
- PP4593
- Filed
- January 10, 1979
- Granted
- September 23, 1980
- Expires
- January 10, 1999
- Inventor
- OTT CLEVELAND
No cultivar name of record
This patent does not name the plant. Through the 1980s and early 1990s that was still common: naming every new cultivar only became standard practice as plants began to be marketed under brand names. The grant identifies this one by its number and by a written description instead.
Nothing here is missing from our records: the patent itself states no name. Where one exists we show it, and we do not invent one.
Abstract
A new and distinct variety of poinsettia plant is a sport of Annette Hegg Supreme (U.S. Plant Pat. 3,392). The new variety is characterized by bracts which are distinctly rugose. The leaves, however, are not rugose. The bracts are light pink but the venation is dark rose and prominent. The bracts are not lobed. The bracts are more round and less pointed than in the parent. The foliage is a lighter green than in the parent.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
What is claimed is: 1. A new and distinct variety of poinsettia plant, substantially as herein illustrated and described, the body of the bracts being a lighter pink than the parent U.S. Plant Pat. No. 3,392, the pink color being deeper with great illumination, and paling with less illumination, the venation being prominent and rose in color; characterized particularly in that the body of the bracts are rugose, i.e., the veins are sunken in valleys on the upper surface of the bract and the epidermis between veins is elevated or arched, the body of the bract being arched between opposite edges, the bracts being non-lobed and more round and less pointed than in the parent, the foliage being a lighter green than in the parent.
Read the full patent: US Plant Patent PP4593 in full — the complete specification, every figure, and the file history.