Patents by Inventor John B. Hassell, Jr.

John B. Hassell, 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).

  • Method for producing single crystal gadolinium gallium garnet
    Patent number: 4199396
    Abstract: Method for producing virtually perfect massive unicrystalline gadolinium gallium garnet from a melt of gadolinium and gallium oxides containing an addition of calcium, magnesium or strontium ions.
    Type: Grant
    Filed: April 26, 1978
    Date of Patent: April 22, 1980
    Assignee: Union Carbide Corporation
    Inventors: Charles D. Brandle, Jr., John B. Hassell, Jr.