US Plant Patent PP31695
OKC 1131
Bermudagrass plant named ‘OKC 1131’
UNDER PATENT
Still under patent. Protection ends May 25, 2038.
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
- PP31695
- Filed
- May 25, 2018
- Granted
- April 21, 2020
- Expires
- May 25, 2038
- Assignee
- UNIV OKLAHOMA STATE
- Inventor
- WU YANQI; MARTIN DENNIS L; MOSS JUSTIN Q; WALKER NATHAN R; FONTANIER CHARLES
Abstract
‘OKC 1131’ is a new clonally propagated F1 hybrid from a cross of Cynodon dactylon var. dactylon accession A12268 (2n=4x=36) x C. transvaalensis Oklahoma State University (OSU) section ‘2747’ (2n=2x=18). The distinct variety has exceptional winter survivability, improved drought resistance, superior traffic tolerance, high turf quality, and wide adaptation. It has very short internodes and leaf blades. It has demonstrated the characteristics of fast establishment rate, early green up, dark green color, and sufficient sod tensile strength for reliable sod production on farm.
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 and distinct variety of turf bermudagrass, substantially as illustrated and described herein.
Read the full patent: US Plant Patent PP31695 in full — the complete specification, every figure, and the file history.