Patents by Inventor Claudio Christian Cerqua

Claudio Christian Cerqua 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).

  • Segmented transformable jewelry article having variable structural dimensions
    Patent number: 5865042
    Abstract: A system for the realization of gold-work and/or jewelry articles, out of precious metals designed in intermediate and end sections each provided with corresponding coupling means of different kinds, that permit engagement in sequence of said sections to produce different products, that may be varied according to demand.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: February 2, 1999
    Inventor: Claudio Christian Cerqua
  • Changeable articles of jewelry and method of using them
    Patent number: 5701765
    Abstract: The appearance of a jewelry article such as a wedding ring is changed by covering a central module with a plurality of superposed blades, and/or by attaching, to a central module, one or more annular structures which have shapes, colors, or other aesthetic qualities which represent significant events such as wedding anniversaries in the life of the wearer.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: December 30, 1997
    Inventor: Claudio Christian Cerqua