US Plant Patent PP6260
African violet named Arctic Circle
PUBLIC DOMAIN
Patent expired September 24, 2006. 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
- PP6260
- Filed
- September 24, 1986
- Granted
- August 23, 1988
- Expires
- September 24, 2006
- Inventor
- YOSHIDA EIICHI
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
A new variety of African violets that have been bred from a hybrid formed by crossing Saintpaulia ionantha, the traditional florists' African violet with the high altitude species, Saintpaulia schumensis. The high cost of energy in northern latitudes and the relatively high temperatures required by Saintpaulia ionantha, which grows naturally at the foot of Mount Usamabara in East Africa, have made commercial growing of the violet expensive. By bringing in genes from Saintpaulia schumensis which grows at some 7,000 feet on the same mountain, where temperatures can fall as low as 55 degrees Fahrenheit, a new avenue of growth is opened up for this popular plant.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. An African violet plant, as shown and described.
Read the full patent: US Plant Patent PP6260 in full — the complete specification, every figure, and the file history.