Patents by Inventor Raymond F. Leban

Raymond F. Leban 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).

  • Inconspicuous, room-ceiling-mountable, non-productive-energy-loss-minimizing, air diffuser for a room
    Patent number: 5107755
    Abstract: A ceiling-mounted air diffuser apparatus in which a annular discharge opening is effectively defined at a location between an effective inner margin of a drop-ceiling-supporting framework and surrounding ceiling panels and an inwardly spacedly adjacent outer margin of an intermediate, generally similarly shaped but smaller, ceiling panel positioned in a symmetrically centered location within the large vertical ceiling opening.
    Type: Grant
    Filed: October 19, 1990
    Date of Patent: April 28, 1992
    Assignee: Leban Group
    Inventors: Raymond F. Leban, Francis L. McCall