Patents by Inventor Stephen Ray Landrum

Stephen Ray Landrum 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).

  • Fan having blade members that heat and cool and has an ionizing grid for air purification
    Patent number: 7115158
    Abstract: A ceiling fan that incorporates into its blades both a system for air purification by removing dust and other particulate pollutants from the air in a room through ionization of the air stream passing over an ionizer grid and also a system for heating and cooling the air stream passing over the blades. The device provides a room conditioner for efficiently heating or cooling and maintaining a room at a temperature comfortable to the user. The device also provides negative ion generation through the use of the ionizer.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: October 3, 2006
    Inventor: Stephen Ray Landrum