Patents by Inventor James Gilbert Buchanan

James Gilbert Buchanan 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).

  • Manufacture of building products
    Patent number: 5772939
    Abstract: A method of manufacturing concrete roof tiles having the appearance of shake by providing the leading edges of successive tiles with a randomly shaped leading edge. The method comprises forming a ribbon of mortar on a series of tile forming pallets; and effecting rupture of the ribbon at joints between successive pallets by causing a leading pallet to accelerate away from the remaining pallets to create a gap therebetween.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: June 30, 1998
    Assignee: Monier, Inc.
    Inventors: Jeffery James Palm, Luis Garcia, Jr., James Gilbert Buchanan, Bhushan Kumar Oberoi