US Plant Patent PP12928
HS607
Shiitake mushroom plant named ‘HS607’
PUBLIC DOMAIN
Patent expired October 23, 2020. 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
- PP12928
- Filed
- October 23, 2000
- Granted
- September 10, 2002
- Expires
- October 23, 2020
- Assignee
- HOKKEN CO LTD, TAKANO SHIGEO
- Inventor
- INOUE SADAYUKI; AYUSAWA SUMIO; TAKANO SHIGEO; EDA KATSUMASA; YAMAUCHI TAKAHIRO
Abstract
The present invention relates to a new, distinct horticultural variety of shiitake mushroom, Lentinus edodes (Berk.) Sing. This new variety, named ‘HS607’, was found by crossbreeding. It is adaptable to both season-off cultivation on logs and short (forcing) or long (natural) term cultivation on sawdust beds.
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 shiitake mushroom plant as substantially illustrated or described in the specification.
Read the full patent: US Plant Patent PP12928 in full — the complete specification, every figure, and the file history.