Skip to content
The Patent Garden

US Plant Patent PP19313

H1X1

Agaricus subrufescens mushroom plant named ‘H1X1’

UNDER PATENT

Still under patent. Protection ends October 31, 2026.

Twenty years from the filing date would end on May 15, 2026. This patent earned 169 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP19313, the photograph of H1X1 printed in the patent.
Figure 1 from US Plant Patent PP19313, 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
PP19313
Filed
May 15, 2006
Granted
October 14, 2008
Expires
October 31, 2026
Assignee
SYLVAN BIOPRODUCTS INC
Inventor
KERRIGAN RICHARD W; WACH MARK P

Abstract

A new and unique variety of the mushroom Agaricus subrufescens Peck was produced by crossbreeding a single spore isolate from the fungal strain ‘I-101’ and a single-spore isolate from the fungal strain ‘SBRFG’. The resultant hybrid, named ‘H1X1’, exhibits early cropping, large size, high productivity, and an attractive appearance that includes a smooth, round cap.

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

1. A new and distinct variety of Agaricus subrufescens mushroom as substantially illustrated and described in the specification.

Read the full patent: US Plant Patent PP19313 in full — the complete specification, every figure, and the file history.