US Plant Patent PP4206
Popcorn
Chrysanthemum plant
PUBLIC DOMAIN
Patent expired February 7, 1995. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on February 4, 1997, but this patent ends 728 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
- PP4206
- Filed
- February 4, 1977
- Granted
- February 7, 1978
- Expires
- February 7, 1995
- Assignee
- YODER BROTHERS INC
- Inventor
- JESSEL JR WALTER H; DUFFETT WILLIAM E
Abstract
A novel chrysanthemum of the pompon type characterized by white ray florets and tolerance of frost.
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 Popcorn and characterized particularly as to uniqueness by the combined characteristics of flat capitulum form, reflexing at maturity; pompon capitulum type; white ray floret color, tinging pink with finishing temperatures below 56° F; diameter across face of capitulum up to 50 mm; permanence of inflorescence ranging from 14 to 21 days;medium plant height; spreading branching pattern; good tolerance of inflorescence to frost damage; average natural season flowering date of September 25; and average flowering response of 7 weeks in photoperiodic controlled flowering programs.
Read the full patent: US Plant Patent PP4206 in full — the complete specification, every figure, and the file history.