US Plant Patent PP4977
Plum tree
PUBLIC DOMAIN
Patent expired October 26, 2001. 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
- PP4977
- Filed
- October 26, 1981
- Granted
- January 25, 1983
- Expires
- October 26, 2001
- Assignee
- EWEN ALAN D
- Inventor
- HENGST WILLIAM E
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 Japanese plum tree which is an open pollinated seedling of Mariposa and which is characterized by its yellow skin color. Compared with Mariposa this new variety matures in the Exeter District 3 weeks later. The fruit has an elongate rather than a round shape. The fruit holds well in storage and at room temperature, as well or better than Mariposa, and is suitable for the fresh and dried fruit 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 as described, illustrated and identified by the characteristics enumerated above.
Read the full patent: US Plant Patent PP4977 in full — the complete specification, every figure, and the file history.