US Plant Patent PP4129
Frost
Chrysanthemum plant
PUBLIC DOMAIN
Patent expired October 18, 1994. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on August 23, 1996, but this patent ends 675 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
- PP4129
- Filed
- August 23, 1976
- Granted
- October 18, 1977
- Expires
- October 18, 1994
- Assignee
- YODER BROTHERS INC
- Inventor
- JESSEL JR WALTER H; DUFFETT WILLIAM E
Abstract
This novel chrysanthemum relates to a white spoon daisy type having good tolerance of high night temperatures.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
We claim: 1. A new and distinct cultivar of Chrysanthemum morifolium, Ramat., known by the cultivar name Frost and particularly characterized as to uniqueness by the combined characteristics of flat inflorescence form; spooned daisy inflorescence type; white ray floret color, with no pink discoloration with age or with cool (below 60° F) temperature finishes; yellow-green (immature) to yellow (mature) disc floret color; uniform nine week flowering response to photoperiodic short day control; minimal pollen development; diameter across face of inflorescence from 80 to 95 mm. at maturity; semi-spreading branching pattern; and medium plant height.
Read the full patent: US Plant Patent PP4129 in full — the complete specification, every figure, and the file history.