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The Patent Garden

US Plant Patent PP21078

Blue Knight

Hydrangea plant named ‘Blue Knight’

UNDER PATENT

Still under patent. Protection ends March 31, 2029.

No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.

Figure 1 of US plant patent PP21078, the photograph of Blue Knight printed in the patent.
Figure 1 from US Plant Patent PP21078, reproduced as printed. Photographs in a plant patent are taken by the applicant. Reproduction of the patent document is permitted; the image is shown whole and uncropped for that reason.

The record

Patent number
PP21078
Filed
March 31, 2009
Granted
June 22, 2010
Expires
March 31, 2029
Assignee
ICHIE TOYOKAZU
Inventor
ICHIE TOYOKAZU

Abstract

A new cultivar of Hydrangea macrophylla named ‘Blue Knight’ that is characterized by its early blooming habit, its ability to re-bloom on new growth after deadheading, its consistently well-formed, lacecap type inflorescences with large, double, rounded shaped sterile flowers that are light to dark blue under acidic conditions and bright pink under alkaline conditions, its deep green glossy foliage, and its strong stems that enable pot culture without staking.

Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.

1. A new and distinct cultivar of Hydrangea plant named ‘Blue Knight’ substantially as herein illustrated and described.

Read the full patent: US Plant Patent PP21078 in full — the complete specification, every figure, and the file history.