US Plant Patent PP26049
marmo shiro-2
Bunashimeji mushroom plant named ‘marmo shiro-2’
UNDER PATENT
Still under patent. Protection ends November 29, 2033.
Twenty years from the filing date would end on March 15, 2033. This patent earned 259 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP26049
- Filed
- March 15, 2013
- Granted
- November 3, 2015
- Expires
- November 29, 2033
- Assignee
- HOKUTO CORP
- Inventor
- KOIKE AYUMI
Abstract
The present variety of mushroom plant named ‘marmo shiro-2’ was cultivated by the gathering and repeated breeding of Bunashimeji mushrooms having dominant traits, which has good qualitative characteristics and appearance, less adhesion of the stem, excellent keeping qualities and storage life, and improved after-storage taste. This edible mushroom is exquisite in stability, reproducibility and uniformity when being produced.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
What is claimed is: 1. A new, distinct variety of Bunashimeji mushroom plant as substantially illustrated and described in the specification.
Read the full patent: US Plant Patent PP26049 in full — the complete specification, every figure, and the file history.