Patents by Inventor Paul E. R. Nordquist, Jr.

Paul E. R. Nordquist, Jr. 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).

  • Preparation of ultra-pure metal halides
    Patent number: 4965055
    Abstract: Metal halides are ultrapurified by selective complexation with a complexing gent to form a charged first complex. A ligand forms an oppositely charged second complex with metallic impurities in the metal halide to be purified. A solution containing these complexes is then passed through an ion exchange column and the desired purified metal halide collected. The present method is particularly useful in the production of ultrapure metal halides, such as zirconium fluorinate, for metallic glasses.
    Type: Grant
    Filed: March 27, 1990
    Date of Patent: October 23, 1990
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Paul E. R. Nordquist, Jr., Arnold H. Singer
  • Etch and polish for metal halides
    Patent number: H125
    Abstract: Boric acid, an acidifying agent, and an optional complexing agent are mixed to form an aqueous solution which is used to etch and polish metal halide. The solution is used to wet a polishing pad which is mounted on a rotating planar wheel. The metal halide is brought into contact with the pad thereby polishing the surface of the metal halide.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: September 2, 1986
    Assignee: United States of America
    Inventor: Paul E. R. Nordquist, Jr.