US Plant Patent PP23171
Johann Schoofs Sen
Eichhornia crassipes plant named ‘Johann Schoofs Sen’
UNDER PATENT
Still under patent. Protection ends June 7, 2030.
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
- PP23171
- Filed
- June 7, 2010
- Granted
- November 6, 2012
- Expires
- June 7, 2030
- Assignee
- ROGMANS MARIA, WILHELM HERMANN-JOSEF
- Inventor
- ROGMANS MARIA; WILHELM HERMANN-JOSEF
Abstract
A new Eichhornia crassipes plant named ‘Johann schoofs Sen’ is provided which is well suited to serve as a biomass renewable energy source. The plant is particularly well suited to metabolize carbon dioxide from emissions. A free-floating small compact mat-like growth habit is displayed with an intertwined root ball. A typical leaf petiole is absent, and the roots are finely structured. The leaves are dark green in coloration, and the plant survives well under low-light conditions. The plant generates itself from new shoots and commonly can double its biomass in approximately 10 to 14 days.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct Eichhornia crassipes plant, substantially as illustrated and described.
Read the full patent: US Plant Patent PP23171 in full — the complete specification, every figure, and the file history.