Patents by Inventor Ralph F. Cooper

Ralph F. Cooper 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).

  • Masonry block insulating device
    Patent number: 4193241
    Abstract: A device for insulating masonry block comprises an insulating plug member for being inserted into a cinder block space, the plug member having a protruding portion extending outwardly from the block, and a cavity extending inwardly along a side of the plug member.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: March 18, 1980
    Inventors: Knud Jensen, Ralph F. Cooper