Patents by Inventor Sergio Grifoni

Sergio Grifoni 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).

  • Shield against radiations
    Patent number: 4727257
    Abstract: A shield against ionizing radiations comprises at least one layer including one or more boron minerals and/or one or more lead minerals and/or directly derived products, which preferably constitute the inert or slightly active aggregate fraction of cement-based conglomerates (such as concrete or mortar). Galena and/or other lead minerals can be used for the shielding from .gamma. rays, and colemanite and/or other boron minerals can be used for neutron shielding. Particular purpose additives will also be used. The family of compositions according to the invention will contain by weight 65-75% of floated galena, 5-10% of colemanite and 20-25% of binding agents and additives.
    Type: Grant
    Filed: January 22, 1986
    Date of Patent: February 23, 1988
    Inventor: Sergio Grifoni