Patents by Inventor Craig Stone

Craig Stone 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).

  • Neutron absorbing glass compositions
    Patent number: 5221646
    Abstract: Neutron absorbing glass compositions comprise SiO.sub.2, .sup.6 Li.sub.2 O and optionally Al.sub.2 O.sub.3. The compositions may further include PbO. The compositions provide neutron absorption without release of gamma rays.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: June 22, 1993
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventors: Douglas H. Blackburn, Craig Stone, David C. Cranmer, Dale A. Kauffman, James Grundl