Patents by Inventor Charles D. Ledford

Charles D. Ledford 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).

  • Method of assembling a hazardous material container storage building
    Patent number: 5285617
    Abstract: A hazardous waste material container storage building comprising a plurality of modules, each module having a floor for supporting containers of hazardous waste materials and tubes underlying the floor. In one embodiment, a first and second module are provided. The invention further comprises a mechanical joining mechanism extending through the first module tube and the second module tube for securing the first module to the second module. The first and second modules are joined to create a single, unitary hazardous waste material storage building. A related method is also disclosed. Another embodiment of a hazardous waste material container storage building comprises providing a plurality of modules, each having a securing member disposed on the roof of each module. Two modules are joined by connecting a fastener to the securing members of each respective module. A related method is also disclosed. The first and second embodiment may be used in the same installation.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: February 15, 1994
    Assignee: CID Associates, Inc.
    Inventors: Frederick W. Romig, Charles D. Ledford
  • Hazardous material container storage building and related method
    Patent number: 5191742
    Abstract: A hazardous waste material container storage building comprising a plurality of modules, each module having a floor for supporting containers of hazardous waste materials and tubes underlying the floor. In one embodiment, a first and second module are provided. A mechanical joining mechanism extends through the first module tube and the second module tube for securing the first module to the second module. The first and second modules are joined to create a single, unitary hazardous waste material storage building. A related method is also provided. Another embodiment of a hazardous waste material container storage building comprises a plurality of modules, each having a securing member disposed on the roof of each module. Two modules are joined by connecting a fastener to the securing members of each respective module. A related method is also provided. The first and second embodiment may be used in the same installation.
    Type: Grant
    Filed: April 2, 1991
    Date of Patent: March 9, 1993
    Assignee: CID Assoicates, Inc.
    Inventors: Frederick W. Romig, Charles D. Ledford
  • Process for conveying old rubber tires into oil and a useful residue
    Patent number: 5095040
    Abstract: Old rubber tires are physically shredded and a sized fraction of the shreds is fed into a heated rotating stainless steel tube in which the temperature is carefully controlled so that the shreds are converted to a char and a No. 4 oil product both of which are separately recovered.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: March 10, 1992
    Inventor: Charles D. Ledford
  • Liquid smoke and its production
    Patent number: 4298435
    Abstract: A liquid smoke with superior toning (meat coloring) properties is produced from hardwoods by an automated process in which the raw materials, temperatures and other process variables are carefully controlled within narrow limits to yield a uniformly high quality product.
    Type: Grant
    Filed: May 8, 1980
    Date of Patent: November 3, 1981
    Assignee: The Baltimore Spice Company
    Inventor: Charles D. Ledford