US Plant Patent PP17396
Broncoh
Mushroom variety named ‘Broncoh’
PUBLIC DOMAIN
Patent expired July 25, 2024. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on May 19, 2024. This patent earned 67 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP17396
- Filed
- May 19, 2004
- Granted
- February 6, 2007
- Expires
- July 25, 2024
- Assignee
- PRAKTIJKONDERZOEK PLANT & OMGE
- Inventor
- SONNENBERG ANTON
Abstract
A new and distinct Agaricus bisporus Imbach mushroom cultivar known by the variety name ‘Broncoh’ that has a yield that is on average 25-28% higher than the present-day commercial brown strains and produces fruiting bodies which are firm and have a good shelf life.
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 bisporus Imbach mushroom substantially as shown and described.
Read the full patent: US Plant Patent PP17396 in full — the complete specification, every figure, and the file history.