US Plant Patent PP17833
RIE 12
Hydrangea plant named ‘RIE 12’
PUBLIC DOMAIN
Patent expired January 19, 2026. 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
- PP17833
- Filed
- January 19, 2006
- Granted
- June 26, 2007
- Expires
- January 19, 2026
- Assignee
- IRIE RYOJI
- Inventor
- IRIE RYOJI
Abstract
A new cultivar of Hydrangea plant named ‘RIE 12’ that is characterized by broad upright habit, large dark grey-green leaves, flowers that range in color from yellow-green to light and dark pink, and unique inflorescence development. In combination these traits set ‘RIE 12’ apart from all other existing varieties of Hydrangea known to the inventor.
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 Hydrangea plant named ‘RIE 12’ as described and illustrated herein.
Read the full patent: US Plant Patent PP17833 in full — the complete specification, every figure, and the file history.