Patents by Inventor Ray A. Keen

Ray A. Keen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Midlawn Bermudagrass
    Patent number: PP8162
    Abstract: A triploid variety of Bermudagrass called Midlawn, produces no viable seed, has superior cold hardiness, excellent turf quality, with fine texture, dark green color, good sod density and is slower spreading than Midiron and other, similar turf type Bermudagrass.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: February 23, 1993
    Assignee: Kansas State University Research Foundation
    Inventor: Ray A. Keen
  • Midfield Bermudagrass
    Patent number: PP8168
    Abstract: A triploid variety of Bermudagrass called Midfield, produces no viable seed, has superior cold hardness, excellent turf quality, and spreads more aggressively than most other turf type Bermudagrasses.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: March 2, 1993
    Assignee: Kansas State University Research Foundation
    Inventor: Ray A. Keen