Patents by Inventor Geoffrey P. Fonseca

Geoffrey P. Fonseca 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).

  • Patent number: 4917967
    Abstract: A multiple-layered metallic article useful for example, as costume jewelry having an intermediate "brightening layer" of bronze. A barrier layer selected from the group comprising palladium, tin, tin/zinc, rhodium, or platinum is disposed between the bronze "brightening layer" and a "top coat" layer to avoid migration of the copper component in the bronze layer to the outer surface of the article which, if left unimpeded eventually would result in a tarnishing effect to the article. As a result of the bronze intermediate layer, the article is hypo-allergenic with respect to those people having a skin sensitivity to nickel-plated or nickel-underplated metallic articles.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: April 17, 1990
    Assignee: Avon Products, Inc.
    Inventors: Dennis A. Cupolo, Geoffrey P. Fonseca, Fernando Fernandez, Jean Greenbaum, Jeffrey M. Brown