US Plant Patent PP4270
Chrysanthemum
PUBLIC DOMAIN
Patent expired August 22, 1997. 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
- PP4270
- Filed
- August 22, 1977
- Granted
- June 20, 1978
- Expires
- August 22, 1997
- Assignee
- MIDDLEBURG B V
- Inventor
- MIDDELBURG NICOLAAS
No cultivar name of record
This patent does not name the plant, and for its era that is ordinary rather than an omission. Before about 1980, breeders frequently patented a plant without giving it a cultivar name at all — the grant identified it by its number, its parentage and a written description of the flower and foliage. Most plant patents from the 1930s to the 1970s have no name in them.
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 variety of chrysanthemum plant originating as a sport of Horim (unpatented) and characterized by satiny pure white blooms, vigorous growth, nine week response, permanence, and distinguished from the parent cultivar, Horim, by larger and purer white blooms.
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 cultivar of chrysanthemum, substantially as described and pictured herein, characterized by its satiny pure white blooms, vigorous growth, nine week response and permanence.
Read the full patent: US Plant Patent PP4270 in full — the complete specification, every figure, and the file history.