Patents by Inventor Cornelius J. VanDrunen

Cornelius J. VanDrunen 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).

  • Production of beta-lithium aluminate (LiAlO.sub.2)
    Patent number: 3998939
    Abstract: A low pressure process for the production of beta-lithium aluminate (LiAlO.sub.2) in a two thermal stage reaction of alumina with liquid phase lithium carbonate comprising admixing powdered alumina with a carbonates composition selected from the group consisting of a ternary lithium-potassium-sodium carbonates composition, a binary lithium-potassium carbonates composition and a binary lithium-sodium carbonates composition, heating the admixture at about 480.degree. to 550.degree. C. in a first thermal stage for a period of time to react the alumina with lithium carbonate to form lithium aluminate, and raising the temperature of the lithium aluminate to about 600.degree. to 650.degree. C. in a second thermal stage for a period of time to transform the lithium aluminate (LiAlO.sub.2) to the desired beta-lithium aluminate.
    Type: Grant
    Filed: August 20, 1975
    Date of Patent: December 21, 1976
    Assignee: Institute of Gas Technology
    Inventors: David M. Mason, Cornelius J. VanDrunen