US Plant Patent PP4251
Imperial White
Chrysanthemum plant named Imperial White
PUBLIC DOMAIN
Patent expired May 16, 1995. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on February 2, 1997, but this patent ends 628 days earlier — a terminal disclaimer gives term back. A source that calculates twenty years from filing would tell you this plant is still protected when it is already free.
The record
- Patent number
- PP4251
- Filed
- February 2, 1977
- Granted
- May 16, 1978
- Expires
- May 16, 1995
- Inventor
- IWASAKI SATORU
Abstract
{PG,1 A new variety of chrysanthemum plant originating as a sport of the unpatented cultivar Albatross and distinguished by its much larger flower size and more incurved form, its longer form retention, the increased diameter and length of its stems, and the larger and more luxurious appearance of its foliage.
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 plant, substantially as herein shown and described, characterized by the larger size of its blooms and foliage, when compared with its parent plant, and the greater height and size of its flowering stems.
Read the full patent: US Plant Patent PP4251 in full — the complete specification, every figure, and the file history.