US Plant Patent PP5187
Asparagus plant
PUBLIC DOMAIN
Patent expired January 31, 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
- PP5187
- Filed
- January 21, 1981
- Granted
- January 31, 1984
- Expires
- January 31, 2001
- Assignee
- RESEARCH CORP
- Inventor
- ELLISON J HOWARD
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
An asparagus plant having female characteristics, originating from the Mary Washington cultivar, which has been found suitable for use in production of edible spears and of hybrid seed because of its ability to transmit rust resistance, high yield and good field tolerance to root rot as well as crown rot which would otherwise limit production, enabling growth where standard susceptible cultivars are not profitably grown.
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 asparagus plant, substantially as herein shown and described, characterized particularly as to novelty by the unique combination of characteristics, rust resistance (to Puccina asparagi), good field tolerance to root rot (Fusarium oxysporum) and crown rot (F. moniliforme) together with its ability to produce edible spears and to be combined with a male plant to produce a hybrid having improved yield in addition to the foregoing.
Read the full patent: US Plant Patent PP5187 in full — the complete specification, every figure, and the file history.