Patents by Inventor William F. Longfellow

William F. Longfellow 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: 9433267
    Abstract: Embodiments of the present invention combine an open-face molding process and an injection molding process to embed decorative articles within a shaped unitary body. Two half-molds are formed, each serving both as an open-face mold alone and as components of a two-part mold in combination. An open-face molding process is performed in iterations using each half-mold, wherein during each iteration a layer of a fluid thermoset is poured into each half-mold and allowed to harden into a solid body; pits are bored into each solid body and decorative objects deposited therein; and each pit is plugged with additional quantities of fluid thermoset. Subsequent iterations may be performed over already-formed layers within each half mold. Finally, the half-molds are closed together and joined by an injection molding process, forming a unitary body having a plurality of decorative objects embedded therein.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: September 6, 2016
    Assignee: Levitation Jewelry LLC
    Inventors: Neil Browne, Dalal Browne, William F. Longfellow