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US Plant Patent PP18934

HB 328

Hybrid variety of bluegrass designated ‘HB 328’

PUBLIC DOMAIN

Patent expired September 10, 2026. This plant is in the public domain — anyone may propagate and sell it.

Twenty years from the filing date would end on August 17, 2026. This patent earned 24 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP18934, the photograph of HB 328 printed in the patent.
Figure 1 from US Plant Patent PP18934, 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
PP18934
Filed
August 17, 2006
Granted
June 17, 2008
Expires
September 10, 2026
Assignee
OMS INVESTMENTS INC
Inventor
HARDISON JOHN R; BURR JAY B; FRELICH JAMES R; MARQUEZ GEORGE

Abstract

A hybrid variety of (Texas bluegrass×Kentucky bluegrass)×Kentucky bluegrass is described, characterized by a moderately rapid establishment; dark green color; short plant height; semi-erect growth habit; short tiller culms; a moderately wide leaf blade; large seed; short flag leaf; moderately aggressive rhizome growth; high cold resistance; and high resistance to rust and dollarspot diseases.

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

1. A new and distinct hybrid variety of (Texas bluegrass×Kentucky bluegrass)×Kentucky bluegrass plant, as herein illustrated and described and characterized by a moderately rapid establishment; dark green color; short plant height; semi-erect growth habit; short tiller culms; a moderately wide leaf blade; large seed; short flag leaf; moderately aggressive rhizome growth; high cold resistance; and high resistance to rust and dollarspot diseases.

Read the full patent: US Plant Patent PP18934 in full — the complete specification, every figure, and the file history.