Patents by Inventor Douglas D. Smith

Douglas D. Smith 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).

  • Apparatus for forming thermal insulation blocks
    Patent number: 4218962
    Abstract: Apparatus is described for the formation of thermal insulation blocks from rolls of fibrous blankets. The apparatus comprises folding means to make alternating transverse folds in the blanket, insertion means to insert block supporting members (pronged beams) into and through folds of the block, and sequencing means to control the location of beam insertion according to a predetermined pattern.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: August 26, 1980
    Assignee: Johns-Manville Corporation
    Inventors: Richard N. Cunningham, Douglas D. Smith
  • Oxygen sensitive, refractory oxide composition
    Patent number: 3948813
    Abstract: Oxide compositions containing niobium pentoxide and an oxide selected from the group consisting of hafnia, titania, and zirconia have electrical conductivity characteristics which vary greatly depending on the oxygen content.
    Type: Grant
    Filed: December 2, 1974
    Date of Patent: April 6, 1976
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: Cressie E. Holcombe, Jr., Douglas D. Smith