US Plant Patent PP20643
River Mist
Chasmanthium plant named ‘River Mist’
UNDER PATENT
Still under patent. Protection ends October 23, 2028.
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
- PP20643
- Filed
- October 23, 2008
- Granted
- January 12, 2010
- Expires
- October 23, 2028
- Assignee
- ITSAUL PLANTS LLC
- Inventor
- STEVER KAREN R
Abstract
A new cultivar of Chasmanthium latifolium , ‘River Mist’, characterized by its green and white variegated foliage and its white seed heads that cascade from upright culms.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct cultivar of Chasmanthium plant named ‘River Mist’ as herein illustrated and described.
Read the full patent: US Plant Patent PP20643 in full — the complete specification, every figure, and the file history.