Patents by Inventor Misuzu Koganei

Misuzu Koganei 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).

  • Precious, Semiprecious or Mineral Cut Stone, and the Method of Cutting Same
    Publication number: 20080190139
    Abstract: The invention concerns a precious, semi-precious or mineral cut stone, comprising a crown (1) including in its center a planar table (2) surrounded with several facets of the crown (3-5), a pavilion (6) comprising a pointed culet (8) and several pavilion facets (9-12 and 17), and between the crown (1) and the pavilion (6), a girdle (7). The invention is characterized in that said pavilion facets comprise at least one top facet (9-12) extending between said pointed culet (8) and an intermediate location (13-16) between the girdle (7) and the culet (8).
    Type: Application
    Filed: May 19, 2006
    Publication date: August 14, 2008
    Inventors: Takehiko Sato, Misuzu Koganei, Hiroyuki Koganei